ORDER DENYING U.S. BANE, N.A.’S MOTION TO DISMISS AND DENYING AMERICAN SECURITY INSURANCE COMPANY’S MOTION TO DISMISS
LAUREL BEELER, United States Magistrate Judge.I. INTRODUCTION
In this putative class action, Stephen Ellsworth challenges his lender U.S. Bank’s alleged force-placing of backdated flood insurance on his real property and receiving kickbacks from the insurance company, American Security Insurance Company (“ASIC”). First Amended Class Action Complaint (“FAC”), ECF No. 26, ¶ 13.1 Ellsworth states six claims: (1) breach of contract against U.S. Bank; (2) breach of the covenant of good faith and fair dealing against U.S. Bank; (3) — (4) unjust enrichment against U.S. Bank and ASIC; and (5) — (6) violations of California Business & Professions Code section 17200 et seq. against U.S. Bank and ASIC.2 See id., ¶¶ 58-102.
*1070ASIC and U.S. Bank move to dismiss the complaint, arguing that the claims are (1) preempted by the National Bank Act, (2) barred by the filed rate doctrine, (3) barred by the voluntary payment doctrine, and (4) fail to state a claim. See ASIC’s Motion to Dismiss (“ASIC Mot.”), ECF No. 57; U.S. Bank’s Motion to Dismiss (“U.S. Bank Mot.”), ECF No. 68. For the reasons stated below, the court DENIES the motions to dismiss.
II. STATEMENT
A. Facts From FAC
On or about July 2, 2007, Ellsworth obtained a $393,892 mortgage loan from U.S. Bank that was secured by the deed of trust (the “Mortgage”) on his Napa County, California home. See FAC, ECF No. 26, ¶ 13; id. Ex. 1, ECF No. 26-1 at 3-4. U.S. Bank is the lender-in-interest and servicer of Ellsworth’s mortgage loan. See id. ¶ 14. The Mortgage includes a provision that allows U.S. Bank, in its discretion, to require that Ellsworth maintain flood insurance on the property.
5. Property Insurance. Borrower shall keep the improvements now existing or hereafter erected on the Property insured against loss by fire, hazards included within the term “extended coverage,” and any other hazards including, but not limited to, earthquakes and floods, for which Lender requires Insurance. This Insurance shall be maintained in the amounts (including deductible levels) and for the periods that Lender requires. What Lender requires pursuant to the preceding sentences can change during the term of the Loan. The insurance carrier providing the insurance shall be chosen by Borrower subject to Lender’s right to disapprove Borrower’s choice, which right shall not be exercised unreasonably.
FAC Ex. 1, ECF No. 26-1 at 7. The same provision permits U.S. Bank to force-place flood insurance at Ellsworth’s expense. Id.
If Borrower fails to maintain any of the coverages described above, Lender may obtain insurance coverage, at Lender’s option and Borrower’s expense. Lender is under no obligation to purchase any particular type or amount of coverage. Therefore, such coverage shall cover Lender, but might or might not protect Borrower, Borrower’s equity in the Property, or the contents of the Property, against any risk, hazard or liability and might provide greater or lesser coverage than was previously in effect. Borrower acknowledges that the cost of the insurance coverage so obtained might significantly exceed the cost of insurance that Borrower could have obtained. Any amounts disbursed by Lender under this Section 5 shall become additional debt of Borrower secured by this Security Instrument. These amounts shall bear interest at the Note rate from the date of disbursement and shall be payable, with such interest, upon notice from Lender to Borrower requesting payment.
Id. Ellsworth alleges that U.S. Bank’s discretion to force-place insurance is constrained by the Mortgage’s paragraph 9, which provides:
9. Protection of Lender’s Interest in the Property and Rights Under this Security Instrument. If (a) Borrower fails to perform the covenants and agreements contained in this Security Instrument, ... then Lender may do and pay for whatever is reasonable or appropriate to protect Lender’s interest in the Property and rights under this Security Instrument, including protecting and/or assessing the value of the *1071Property, and securing and/or repairing the Property.
Id. Ex. 1, ECF No. 26-1 at 8. The Mortgage also contains a provision titled “Loan Charges,” which provides that U.S. Bank “may charge Borrower fees for services performed in connection with Borrower’s default, for the purpose of protecting [U.S. Bank’s] interest in the Property and rights under this Security Instrument, including, but not limited to, attorneys’ fees, property inspection and valuation fees.” Id. at 11.
U.S. Bank initially did not require Ells-worth to maintain flood insurance on the property. See FAC ¶ 18. On or about June 9, 2010, U.S. Bank sent Ellsworth a notice (the “Notice”), informing him that “[o]ur records indicate your property is located in a Special Flood Hazard Area (SFHA) as determined by the Federal Emergency Management Agency (FEMA)” and that the Mortgage and the Flood Disaster Protection Act of 1973 required Ellsworth to purchase flood insurance. Id. ¶ 18; id. Ex. 2, ECF No. 26-2 at 2. The Notice explained that U.S. Bank had purchased temporary flood insurance coverage on Ellsworth’s property from ASIC. Id. ¶ 19, Ex. 2 at 2-3. The insurance coverage was effective as of July 3, 2009 and would expire 45 days after the June 9, 2010 notice. Id. ¶ 20, Ex. 2 at 2-3. If Ellsworth failed to provide adequate proof of flood insurance within 45 days, “this temporary coverage will convert to a full year policy and the annual premium [$2,250] will be added to your escrow account.” Id. ¶ 20, Ex. 2 at 3. The Notice also informed Ellsworth that “[i]n many instances, the insurance we purchase for you may be more expensive than you are able to obtain on your own” and provided the telephone number of another insurance agency that could also provide Ellsworth with adequate flood insurance. Id. ¶ 20, Ex. 2 at 2-3.
On August 18, 2010, U.S. Bank sent Ellsworth a second notice (“Second Notice”) informing him that it had not received evidence that he had purchased flood coverage. Id. Ex. 3, ECF No. 26-3 at 2. Accordingly, U.S. Bank explained that it had force-placed the flood insurance described in the June 9, 2010 notice. Id. Ellsworth alleges that the force-placed flood insurance policy was backdated so that it was effective from July 3, 2009 to July 3, 2010, though it was not issued until August 18, 2010. Id. ¶¶ 21-22, Ex. 4., ECF No. 26-4 at 2. ASIC allegedly paid U.S. Bank a commission or kickback for force-placing ASIC’s flood insurance policy, U.S. Bank kept the commission, and Ellsworth paid the full $2,250 premium. Id. ¶¶ 23-24.
In August 2010, Ellsworth purchased a one-year flood insurance policy through State Farm effective September 1, 2010. See id. ¶ 25, Ex. 5, ECF No. 26-5. This policy provided $250,000 in flood insurance coverage like the ASIC policy, but it was not backdated and cost only $276. Id.
Ellsworth alleges that ASIC’s standard business practice is to pay kickbacks or commissions (a percentage of the premium) to banks issuing force-placed coverage, including U.S. Bank. Id. ¶ 23, 27. ASIC’s practice of paying commissions to its lender-clients has been documented in numerous court opinions, in publicly-filed deposition testimony, and American Banker magazine. Id. ¶¶ 29-31. In addition, ASIC discloses details of its commission payments in public regulatory filings, including filings with the California Department of Insurance. Id. ¶ 32.
According to Ellsworth, many institutions have criticized the allegedly unfair business practices in the force-placed insurance business, including kickbacks and backdating. For example, numerous courts have condemned the practice of *1072paying and accepting commissions on force-placed insurance coverage, see id. ¶36 (collecting cases), and force-placing backdated insurance policies, id. ¶ 45 (collecting cases). Fannie Mae also has issued restrictions on lenders’ ability to obtain reimbursement for force-placed insurance commissions and is seeking to entirely eliminate servicers’ ability to pass these costs on to it. Id. ¶¶ 38-39. The California Insurance Commissioner has expressed concern about “questionable financial integration between mortgage lenders and insurers providing ‘forced-placed’ mortgage insurance.” Id. ¶40. Similarly, in May 2012, the New York Department of Financial Services held public hearings regarding these practices. Id. ¶ 41. Also, the National Association of Insurance Commissioners has expressed its “regulatory concern” about “reverse competition” in the force-placed insurance market and has condemned the practice of force-placing backdated policies. Id. ¶¶ 42^13.
On April 9, 2012, Ellsworth sent a letter to U.S. Bank stating that the force-placed flood insurance policies violated the deed of trust and requesting a refund of the premiums he paid. See id. ¶ 26; id. Ex. 6, ECF No. 26-6 at 2. Ellsworth did not receive a response from U.S. Bank. Id. ¶ 26.
B. Procedural History
On May 16, 2012, Ellsworth filed this lawsuit against U.S. Bank and ASIC on behalf of himself and nationwide and California classes of similarly situated individuals. See Complaint, ECF No. 1. Ellsworth alleges that he is a California resident, U.S. Bank is a national bank based in Ohio, and ASIC is a Delaware corporation with its principal place of business in Atlanta, Georgia. FAC, ECF No. 26, ¶¶ 7-9. Ellsworth alleges that this court has jurisdiction under the Class Action Fairness Act, 28 U.S.C. § 1332(d)(2), based on his allegations of minimal diversity, a putative class with more than 100 members, and an amount in controversy greater than $5,000,000. FAC, ECF No. 26, ¶ 10.
Ellsworth seeks to represent a class consisting of “[a]ll persons who have or had a loan or line of credit with U.S. Bank secured by their residential property in the United States, and who were charged for lender-placed flood insurance by U.S. Bank within the applicable limitations period.” Id. ¶ 47. Ellsworth also proposes several claim-specific sub-classes: (1) to the extent that claims 1-4 are based on backdating, Ellsworth proposes a sub-class of all class members who were charged for backdated lender-placed flood insurance within the limitations period; (2) under claims 5 and 6, Ellsworth proposes a subclass of all persons who have or had a loan or line of credit with U.S. Bank secured by their residential property in the State of California, and who were charged for lender-placed flood insurance by U.S. Bank on or after May 16, 2008; and (3) to the extent that claims 5 and 6 are based on backdating, Ellsworth proposes a sub-class of all persons who have or had a loan or line of credit with U.S. Bank secured by their residential property in the State of California and who were charged for backdated lender-placed flood insurance by U.S. Bank on or after May 16, 2008. Id. ¶¶ 48-50.
ASIC moved to dismiss the FAC on August 31, 2012. ECF No. 57. U.S. Bank moved to dismiss the FAC on September 27, 2012. ECF No. 68. All parties consented to the undersigned’s jurisdiction. See ECF Nos. 19, 23, 41.
III. LEGAL STANDARDS
A. Subject Matter Jurisdiction
Dismissal of a claim is appropriate under Federal Rule of Civil Procedure Rule 12(b)(1) when the court lacks subject-*1073matter jurisdiction over the claim. Federal subject-matter jurisdiction must exist at the time the action is commenced. Morongo Band of Mission Indians v. California State Bd. of Equalization, 858 F.2d 1876, 1380 (9th Cir.1988). A Rule 12(b)(1) motion may either attack the sufficiency of the complaint to establish federal jurisdiction (a facial challenge) or allege a lack of jurisdiction that exists despite the formal sufficiency of the complaint (a factual challenge). See White v. Lee, 227 F.3d 1214, 1242 (9th Cir.2000); Thornhill Publishing Co., Inc. v. General Tel. & Electronics Corp., 594 F.2d 730, 733 (9th Cir.1979); Roberts v. Corrothers, 812 F.2d 1173, 1177 (9th Cir.1987). A facial attack asserts lack of federal jurisdiction based on the complaint alone, and the court must accept all allegations of fact in the complaint as true and construe them in the light most favorable to the plaintiffs. See Warren v. Fox Family Worldwide, Inc., 328 F.3d 1136, 1139 (9th Cir.2003). By contrast, with a factual challenge, a court need not assume the truth of factual allegations but may hear additional evidence about jurisdiction and resolve factual disputes when necessary. See Roberts, 812 F.2d at 1177. If a defendant challenges jurisdiction by presenting evidence, then the party opposing the motion must present sufficient evidence to support the court’s subject-matter jurisdiction. See Savage v. Glendale Union High School, Dist. No. 205, Maricopa County, 343 F.3d 1036, 1040 n. 2 (9th Cir.2003). Dismissal of a complaint without leave to amend should be granted only where the jurisdictional defect cannot be cured by amendment. Eminence Capital, LLC v. Aspeon, Inc., 316 F.3d 1048, 1052 (9th Cir.2003).
B. Failure to State a Claim
Rule 8(a) requires that a complaint contain a “short and plain statement of the claim showing that the pleader is entitled to relief.” Fed.R.Civ.P. 8(a)(2). A complaint must therefore provide a defendant with “fair notice” of the claims against it and the grounds for relief. See Bell Atlantic Corp. v. Twombly, 550 U.S. 544, 555, 127 S.Ct. 1955, 167 L.Ed.2d 929 (2007) (quotation and citation omitted).
To survive a motion to dismiss under Federal Rule of Civil Procedure 12(b)(6), a complaint must contain sufficient factual matter, accepted as true, to state a claim for relief that is plausible on its face. Bell Atl. Corp. v. Twombly, 550 U.S. 544, 570, 127 S.Ct. 1955, 167 L.Ed.2d 929 (2007). “A claim has .facial plausibility when the plaintiff pleads factual content that allows the court to draw the reasonable inference that the defendant is liable for the misconduct alleged.” Ashcroft v. Iqbal, 556 U.S. 662, 129 S.Ct. 1937, 1949, 173 L.Ed.2d 868 (2009). “The plausibility, standard is not akin to a ‘probability requirement,’ but it asks for more than a sheer possibility that a defendant has acted unlawfully.” Id. (quoting Twombly, 550 U.S. at 557, 127 S.Ct. 1955). “While a complaint attacked by a Rule 12(b)(6) motion to dismiss does not need detailed factual allegations, a plaintiffs obligation to provide the ‘grounds’ of his ‘entitle[ment] to relief requires moré than labels and conclusions, and a formulaic recitation of the elements of a cause of action will not do. Factual allegations must be enough to raise a right to relief above the speculative level.” Twombly, 550 U.S. at 555, 127 S.Ct. 1955 (internal citations and parentheticals omitted).
In considering a motion to dismiss, a court must accept all of the plaintiffs allegations as true and construe them in the light most favorable to the plaintiff. See id. at 550, 127 S.Ct. 1955; Erickson v. Pardus, 551 U.S. 89, 93-94, 127 S.Ct. 2197, 167 L.Ed.2d 1081 (2007); Vasquez v. Los Angeles County, 487 F.3d 1246, 1249 (9th Cir.2007). In addition, courts may consider documents attached to the complaint. *1074Parks School of Business, Inc. v. Symington, 51 F.3d 1480, 1484 (9th Cir.1995) (citation omitted).
If the court dismisses the complaint, it should grant leave to amend even if no request to amend is made “unless it determines that the pleading could not possibly be cured by the allegation of other facts.” Lopez v. Smith, 203 F.3d 1122, 1127 (9th Cir.2000) (quoting Cook, Perkiss and Liehe, Inc. v. Northern California Collection Serv., Inc., 911 F.2d 242, 247 (9th Cir.1990)). But when a party repeatedly fails to cure deficiencies, the court may order dismissal without leave to amend. See Ferdik v. Bonzelet, 963 F.2d 1258, 1261 (9th Cir.1992) (affirming dismissal with prejudice where district court had instructed pro se plaintiff regarding deficiencies in prior order dismissing claim with leave fir amend).
C.. The National Flood Insurance Act
Under the National Flood Insurance Act of 1968 (“NFIA”) and the Flood Disaster Protection Act of 1973, as amended, the Office of the Comptroller of Currency (“OCC”) is charged with promulgating regulations that require lending institutions and servicers to ensure that properties subject to their mortgage loans have adequate flood insurance. See 42- U.S.C. §§ 4012a(b)(l), 4003(a)(5). The OCC regulations that control a lender’s powers and obligations related to flood insurance provide that a national bank “shall not make, increase, extend, or renew any designated loan unless the building ... securing the loan is covered by flood insurance for the term of the loan.”3 12 C.F.R. § 22.3(a) (also setting minimum coverage requirements); see also 42 U.S.C. § 4012a(b)(l) (substantially similar); 12 C.F.R. § 22.2(b) (regulations applicable only to' national banks). The NFIA permits lenders to force-place flood insurance in areas with special flood hazards:
If, at the time of origination or at any time during the . term -of a loan secured by improved real estate or by a mobile home located in an area that has been identified ... as an area'' having special flood hazards and in which insurance is available under the [NFIA], the lender or servicer for the loan determines that the building or mobile home and any personal property securing the loan is not covered by flood insurance or is covered by' [inadequate flood insurance], the lender or servicer shall notify the borrower under the loan that the borrower should obtain, at the borrower’s expense, an amount of flood insurance for the building or. mobile home and such personal property that is not less than the amount under subsection (b)(1) of this section, for the term of the loan.
42 U.S.C. § 4012a(e)(l). “If the borrower fails to purchase such flood insurance within 45 days after notification ... the lender or servicer for the loan shall purchase the insurance on behalf of the borrower and may charge the borrower for the cost of premiums and fees incurred by the lender or servicer for the loan in purchasing the insurance.” 42 U.S.C. § 4012a(e)(2).4 “If *1075a bank requires the escrow of taxes, insurance premiums, fees, or any other charges ... the bank shall also require the escrow of all premiums and fees for any flood insurance required under § 22.3.” 12 C.F.R. § 22.5.
IV. DISCUSSION
The court first considers Defendants’ arguments that the National Bank Act preempts Ellsworth’s claims, then turns to the filed rate and voluntary payment doctrine arguments, and finally considers Defendants’ attacks on the sufficiency of the claims in the first amended complaint.
A. Whether the National Bank Act Preempts Ellsworth’s Claims
1. Preemption Under the National Bank Act and OCC Regulations
Defendants argue that Ellsworth’s claims are preempted entirely under the National Bank Act (“NBA”), 12 U.S.C. § 21 et seq., and related regulations promulgated by the OCC. See USB Mot., ECF No. 68 at 12-21; ASIC Mot., ECF No. 57 at 17-18.5 Ellsworth counters that his claims are not preempted because his state law claims do not conflict with the NBA, and even if they did, his claims against ASIC would survive. PL’s Mem. in Opp’n to U.S. Bank’s Motion to Dismiss (“U.S. Bank Opp’n”), ECF No. 73 at 20; Pl.’s Mem. in Opp’n to ASIC’s Motion to Dismiss (“ASIC Opp’n”), ECF No. 70 at 30-32.
The NBA vests federally chartered banks with the power “[t]o exercise ... subject to law, all such incidental powers as shall be necessary to carry on the business of banking.” 12 U.S.C. § 24 (Seventh). The “business of banking” authorized by the NBA extends beyond those events specifically enumerated in the Act. See NationsBank of North Carolina, N.A. v. Variable Annuity Life Ins. Co., 513 U.S. 251, 258 n. 2, 115 S.Ct. 810, 130 L.Ed.2d 740 (1995). For example, the NBA authorizes federally chartered banks to engage in real estate lending. See 12 U.S.C. § 371.
The OCC “has the power to promulgate regulations and to use its rule-making authority to define the ‘incidental powers’ of national banks beyond those specifically enumerated in the statute.” Martinez v. Wells Fargo Home Mortg., Inc., 598 F.3d 549, 555 (9th Cir.2010) (citing 12 U.S.C. § 93a (OCC authorized to “prescribe rules and regulations to carry out the responsibilities of the office”); Wachovia Bank, N.A. v. Burke, 414 F.3d 305, 312 (2d Cir.2005)); see also 12 U.S.C. § 43; Watters v. Wachovia Bank, N.A., 550 U.S. 1, 127 S.Ct. 1559, 1564, 167 L.Ed.2d 389 (2007). In addition, the OCC can issue legislative rules that preempt state law. 12 U.S.C. § 43(a); see 12 U.S.C. § 93a. “OCC regulations possess the same preemptive effect as the [NBA] itself.” Martinez, 598 F.3d at 555 (citing Fid. Fed. Sav. & Loan Ass’n v. de la Cuesta, 458 U.S. 141, 153, 102 S.Ct. 3014, 73 L.Ed.2d 664 (1982)).
*1076The NBA and related OCC regulations do not preempt the entire field of banking. Martinez, 598 F.3d at 555. Rather, federal courts generally “interpret ] grants of both enumerated and incidental ‘powers’ to national banks as grants of authority ... ordinarily pre-empting contrary state law.” Barnett Bank of Marion County, N.A. v. Nelson, 517 U.S. 25, 32, 116 S.Ct. 1103, 134 L.Ed.2d 237 (1996) (emphasis added). “States are permitted to regulate the activities of national banks where doing so does not prevent or significantly interfere with the national bank’s or the national bank regulator’s exercise of its federal powers. But when state prescriptions significantly impair the exercise of authority, enumerated or incidental under the Act, the state’s regulations must give way.” Watters, 127 S.Ct. at 1567.
As the Ninth Circuit has explained:
State laws of general application, which merely require all businesses (including national banks) to refrain from fraudulent, unfair, or illegal behavior, do not necessarily impair a bank’s ability to exercise its real estate lending powers. Such laws are not designed to regulate real estate lending, nor do they have a disproportionate or other substantial effect on lending. In fact the OCC has specifically cited the UCL in an advisory letter cautioning banks that they may be subject to such laws that prohibit unfair or deceptive acts or practices.
Martinez, 598 F.3d at 555 (citing OCC Advisory Letter, Guidance on Unfair or Deceptive Acts of Practices, 2002 WL 521380, at *2, *7 n. 2 (Mar. 22, 2002)).
Under the NBA, “[a]ny national banking association may make, arrange, purchase or sell loans or extensions of credit secured by liens on interests in real estate, subject to section 1828(o) of this title and such restrictions and requirements as the Comptroller of the Currency may prescribe by regulation or order.” 12 U.S.C. § 371. The OCC defined the preemptive scope of a bank’s real estate lending power in 12 C.F.R. § 34.4, the applicable version6 of which provides in relevant part:
(a) Except where made applicable by Federal law, state laws that obstruct, impair, or condition a national bank’s ability to fully exercise its Federally authorized real estate lending powers do not apply to national banks. Specifically, a national bank may make real estate loans under 12 U.S.C. 371 and § 34.3 without regard to state law limitations concerning ...
(2) The ability of a creditor to require or obtain private mortgage insurance, insurance for other collateral, or other credit enhancements or risk mitigants, in furtherance of safe and sound banking practices; ...
(4) The terms of credit, including schedule for repayment of principal and interest, amortization of loans, balance, payments due, minimum pay*1077ments, or term to maturity of the loan, including the circumstances under which a loan may be called due and payable upon the passage of time or a specified event external to the loan; ...
(6) Escrow accounts, impound accounts, and similar accounts; ■ ... [and]
(10) Processing, originating, servicing, sale or purchase of, or investment or participation in, mortgages....
12 C.F.R. § 34.4(a). In addition, “[s]tate laws purporting to regulate national bank fees and charges that do not constitute interest are addressed in 12 C.F.R. 7.4002.” 12 C.F.R. § 34.4(a)(12) n. 1. Section 7.4002 provides that “[t]he establishment of non-interest charges and fees, their amounts, and the method of calculating them are business decisions tó be made by each bank, in its discretion, according to sound banking judgment and safe and sound banking principles.” 12 C.F.R. § 7.4002(b)(2). It then goes on to list a set of considerations that should be used to determine whether any charge or fee is appropriate. Id.
While the OCC granted banks broad powers to conduct business, it also limited the preemptive effect of these powers. For example, section 34.4(b) provides, in relevant part:
(b) State laws on the following subjects are not inconsistent with the real estate lending powers of national banks and apply to national banks to the extent that they only incidentally affect the exercise of national banks’ real estate lending powers:
(1) Contracts;
(2) Torts; ... [and]
(9) Any other law the effect of which the OCC determines to be incidental to the real estate lending operations of national banks or otherwise consistent with the powers and purposes set out in § 34.3(a).
12 C.F.R. § 34.4(b). Similarly, section 7.4002 provides, “[t]he OCC applies preemption principles derived from the United States Constitution, as interpreted through judicial precedent, when determining whether State laws apply that purport to limit or prohibit charges and fees described in this section.” 12 C.F.R. § 7.4002(d).
2. NBA Preemption and Ellsworth’s Claims
The first issue is whether Ells-worth’s claims — all “contract or tort claims of general applicability” under OCC regulation 34.4(b) — thus are categorically not preempted. See U.S. Bank Opp’n, ECF No. 73 at 22. The court applies Martinez and holds that it must consider the conduct on which the claims are based (and not just the categories of the claims).
In Martinez, the Ninth Circuit found that the NBA preempted the plaintiffs’ section 17200 claims. 598 F.3d 549 at 552. The plaintiffs challenged two fees that Wells Fargo charged when they refinanced their home mortgage loan: an $800 underwriting fee, which plaintiffs claimed was “not reasonably related to Wells Fargo’s actual costs of performing the underwriting;” and a $75 fee for tax services that Wells Fargo allegedly marked up and passed on to the plaintiffs. Id. at 552, n. 2. The plaintiffs claimed that the practice of overcharging and marking up fees constituted unfair competition under section 17200. Id. at 556. The Ninth Circuit held that the plaintiffs claims conflicted with Wells Fargo’s fee-setting power7 under 12 C.F.R. § 7.4002(b)(2), stating: “In essence *1078the Martinezes argue that these fees are too high, and ask the court to decide how much an appropriate fee would be.” Id. Because OCC regulations gave banks broad discretion to set appropriate fee, the NBA preempted the plaintiffs claims. Id.
In Martinez, the court relied on the same OCC advisory letter that Ellsworth cites and also acknowledged that some claims based on generally applicable laws might not be preempted by the NBA. U.S. Bank Reply, ECF No. 74 at 8-9. Nonetheless, the court focused on whether plaintiffs claims ‘“would as a practical matter impose on the Bank’s operations limitations concerning’ the ability to require or obtain insurance, the imposition of fees and charges, the terms of credit, escrow accounts, and servicing of mortgages.” Id. at 9 (quoting Larin v. Bank of Am., N.A., 475 Fed.Appx. 121, 122 (9th Cir.2012)).
Similarly, “the proper inquiry here is whether the legal duty that is the predicate of’ Ellsworth’s claims “falls within the preemptive scope of the NBA or regulations promulgated thereunder.” Rose v. Chase Bank USA, N.A., 513 F.3d 1032, 1038 (9th Cir.2008) (cited in Larin, 475 Fed.Appx. at 122). Causes of action sounding in contract and tort are not necessarily preempted, see U.S. Bank Opp’n at 22-23 (collecting cases), but the conduct at issue can be at core about fees, and those claims — like the claims in Martinez — would be preempted.
The next issue is whether Ellsworth’s claims are at their core about fees (and preempted) or are about practices that are not preempted. Ellsworth claims Defendants are liable for two allegedly prohibited practices: (a) kickbacks to U.S. Bank in that “U.S. Bank and/or its affiliates received a kickback or commission from ASIC on this lender-placed coverage” and “U.S. Bank did not subtract this commission from the premium cost, which was passed along in full to Plaintiff;” and (b) backdating of insurance coverage in that U.S. Bank purchased and charged Ells-worth for a backdated and expired policy. FAC ¶¶ 23, 2. The court holds that the claims are not preempted.
a. The Kickback Allegations
U.S. Bank contends that claims based on the kickback allegations are preempted because they substantially interfere with national banks’ fee setting power under 12 C.F.R. § 7.4002 and real estate lending power under 12 C.F.R. § 34.4(a).8
i. Fee-setting Power
Ellsworth does not challenge “the premium that was charged by ASIC, but rather U.S. Bank’s selection of ASIC in the first place,” meaning, U.S. Bank’s practice of selecting an insurance carrier to earn compensation for itself (in the form of kickbacks or commissions) as opposed to selecting a carrier through a competitive bidding practice. U.S. Bank Opp’n, ECF No. 73 at 24. Ellsworth disavows any challenge to U.S. Bank’s fee-setting power. Id.
An analysis of the complaint confirms that Ellsworth does not challenge U.S. Bank’s right to establish or charge fees. As to his breach of contract (and related) claims, he alleges that the kickback arrangement was unreasonable under the express terms of the mortgage. See FAC ¶ 61. Ellsworth alleges that U.S. Bank agreed to limit its discretion in force placing flood insurance to “dofing] and pay[ing] whatever is reasonable or appropriate to protect [its] interest in the Prop*1079erty.” FAC Ex. 1, ECF No. 26-1 at 8. Even if these allegations directly conflicted with U.S. Bank’s powers under the NBA, nothing in the NBA suggests an intent to impair U.S. Bank’s ability to contractually limit its own powers. Also, a breach of contract claims falls within the section 34.4(b) exception to NBA preemption exception for claims under state contract laws.9 As to the unjust enrichment and unfair competition claims, the court cannot find on this record that they substantially interfere with U.S. Bank’s fee-setting power.
Case decisions confirm that plaintiffs who charge a manipulation of the force-placed insurance do not challenge a bank’s fee setting power. For example, in Gutierrez v. Wells Fargo & Co., the court denied Wells Fargo’s post-Martinez motion to reconsider an earlier ruling that the NBA did not preempt the plaintiffs’ claims. No. C 07-05923 WHA, 2010 WL 1233885 (N.D.Cal. Mar. 26, 2010). The Gutierrez plaintiffs claimed that Wells Fargo’s practice of posting larger checking account withdrawals before smaller ones was an unfair business practice because it was designed to cause account holders to accrue multiple overdraft fees. Id. at *1. That court distinguished Martinez and held that the Gutierrez plaintiffs were not challenging fees:
[Pjlaintiffs in the instant litigation neither challenge whether a particular overdraft fee charged by the bank is ‘too high,’ nor do they ask the Court to decide how much an appropriate fee would be. Rather, the ‘unfair’ claim in this litigation targets whether Wells Fargo’s manipulation of customer transactions ‘behind the scenes’ to maximize the occurrence of overdraft fees during the posting process was a breach of the bank’s duty to act in good faith.... This practice has nothing to do with whether Wells Fargo has the right to establish overdraft fees, or whether individual overdraft fees are reasonably related to actual underlying costs.
Id. at *2.
Similarly, in Williams v. Wells Fargo Bank N.A., another district court found that the NBA did not preempt claims that were nearly identical to Ellsworth’s. No. 11-21233-CIV, 2011 WL 4901346 (S.D.Fl. Oct. 14, 2011). As that court explained, unlike the claims in Martinez:
Plaintiffs are not merely challenging the imposition of the force-placed premiums or the amounts of those premiums. Instead, they challenge the manipulation of the force-placed insurance process in general, the payment arrangement between Wells Fargo Bank and the other Defendants, and Wells Fargo Bank’s participation in the overall scheme intended to provide illegal kickbacks and commissions to the entities involved.
Id. at *11 n. 7 (also finding Gutierrez to be analogous).
Like the plaintiff in Williams v. Wells Fargo Bank N.A., Ellsworth challenges the allegedly unfair practice of arranging for kickbacks in return for force-placing unfairly expensive insurance policies. The increased premiums (including the kickbacks) are the measure of damages caused by the allegedly unfair business practices.
U.S. Bank’s argument is that Ells-worth’s claims would limit its discretion to *1080establish and calculate fees. U.S. Bank Mot., ECF No. 68 at 15. Also, it points out that Ellsworth’s harm is the fee (the $2,250 for the insurance). But that argument is that the NBA preempts any common-law contract or tort challenge to a bank’s conduct that results in damages based on the fees. The case law does not support such an interpretation. See, e.g., Gutierrez, 2010 WL 1233885, at *2.
U.S. Bank also argues that “claims that would require a national bank ‘to alter the manner in which [its] program actually operates’ is precisely what is preempted.” U.S. Bank Reply, ECF No. 74 at 9 (quoting Larin, 475 Fed.Appx. at 122 (emphasis and alterations in U.S. Bank’s motion)). In Larin, the Ninth Circuit reversed the district court and held that the plaintiffs claims were not preempted by the NBA. Id. at 121. The plaintiff challenged the bank’s “practice of making deposited funds immediately available to [overdraft protection program (ODP) ] customers, without placing a hold on a larger or suspicious deposit, [which] increases the customers’ risk of fees.” Id. at 123 (Callahan, J., dissenting). That implicated the bank’s deposit-taking power and the related power to regulate “funds availability” under 12 C.F.R. § 7.4002(b)(2)(ii) — (iv). Id. In reversing the district court, the majority held that Larin challenged only the Bank’s misrepresentation of the value of its ODP program, not the Bank’s operation of the program, and the claims thus were not preempted. Id. at 122.
Larin is a non-precedential memorandum opinion, and the majority opinion is only four paragraphs long and does not provide the context that allows the court to accord it the persuasive weight that U.S. Bank suggests. Also, the weight of authority supports the conclusion that the allegations about kickbacks and backdating here are not about the fees themselves and instead challenge practices and U.S. Bank’s compliance with its contractual obligations.
ii. Real Estate Lending Power
U.S. Bank challenges Ellsworth’s kickback claims as preempted under the NBA’s real estate lending powers — the power to “make, arrange, purchase, or sell ... real estate loans, subject to ... such restrictions and requirements as the Comptroller of the Currency may proscribe by regulation or order,” 12 C.F.R. § 34.3(a), “but without regard to state law limitations,” 12 C.F.R. § 34.4(a). U.S. Bank Mot., ECF No. 68 at 18. U.S. Bank argues that the OCC regulations interpreting the NFIA “say nothing to prohibit a national bank from receiving a commission or other compensation” from the premiums on force-placed flood insurance. Id. at 18. U.S. Bank concludes that Ells-worth’s claims are preempted based on Martinez because charging kickbacks is “in accord with [U.S. Bank’s] federally-authorized powers in protecting its interest in the property.” Id.
12 C.F.R. § 34.4(b)’s preemption limitation allows for contract and tort claims “that only incidentally affect the exercise of national banks’ real estate lending powers.” Ellsworth challenges conduct that is related to the real estate lending powers regulated by the OCC regulations. That is different from obstructing, impairing, or conditioning a national bank’s ability to fully exercise its federally-authorized real estate lending powers under section 34.4(a). The court rejects this as a basis for preemption.
b. The Backdating Allegations
U.S. Bank also argues that Ells-worth’s claims about backdated insurance coverage interfere with its real estate lending powers, specifically its powers “[t]o require or obtain ... insurance for other collateral,” and over “[t]he terms of credit.” U.S. Bank Mot., ECF No. 68 at *108119 (citing 12 C.F.R. § 34.4(a)(2)). Also, it argues that backdating is “fully consistent” with the NFIA’s continuous coverage requirement, which bars banks from making, increasing, extending, or renewing loans such as Ellsworth’s unless the property is covered by flood insurance “for the term of the loan.” Id. (quoting 12 C.F.R. § 22.3(a)).
Under 12 C.F.R. § 22.7,
If a bank, or a servicer acting on behalf of the bank, determines at any time during the term of a designated loan that the building or mobile home and any personal property securing the designated loan is not covered by flood insurance or is covered by flood insurance in an amount less than the amount required under § 22.3, then the bank or its servicer shall notify the borrower that the borrower should obtain flood insurance, at the borrower’s expense, in an amount at least equal to the amount required under § 22.3, for the remaining term of the loan. If the borrower fails to obtain flood insurance within 45 days after notification, then the bank or its servicer shall purchase insurance on the borrower’s behalf. The bank or its servicer may charge the borrower for the cost of premiums and fees incurred in purchasing the insurance.
12 C.F.R. § 22.7.
U.S. Bank argues that its backdating practice is authorized by this section. See U.S. Bank Mot., ECF No. 68 at 20 n. 8. U.S. Bank’s position, is that § 22.7’s requirement that upon discovery of a lapse, adequate insurance should be purchased “fqr the remaining term of the loan” can reasonably be construed as meaning “for the remaining term of the loan from the date of lapse.” Id. The court does not find that interpretation unassailable. The phrase “for the remaining term of the loan” perhaps more arguably is prospective beginning no earlier then when the bank determines there is inadequate flood insurance and more likely from the end of the 45-day notice,-period.
3. Conclusion .
The court follows the weight of authority and finds that the NBA does not preempt the challenges that Ellsworth raises to the alleged kickbacks and backdating.
B. Availability of Exemption under The Filed Rate Doctrine and California Insurance Code
Defendants also argue that the claims are barred by the California insurance code.
To the extent that Defendants argue that a filed rate doctrine bars suit, Ellsworth argues — and Defendants do not really dispute — that there is no doctrine that applies.10 ASIC Opp’n, ECF No. 70 at 25-26 (collecting cases); ASIC Reply, ECF No. 71 at 10.
ASIC’s argument is that “Ellsworth suffered no legally cognizable injury by virtue of having paid a filed and approved” insurance premium and that the claims are barred by the California Insurance Code. ASIC Mot., ECF No. 57 at 12-16.
California law requires property and casualty insurance premiums, including those for flood insurance, to be approved by the commissioner of the California Department of Insurance before their use. See ASIC Mot., ECF No. 57 at 12; see also Cal. Ins.Code § 1861.01(c). The insurance code bars the commissioner from approv*1082ing rates that are “excessive, inadequate, unfairly discriminatory, or otherwise in violation of this chapter.” ASIC Opp’n, ECF No. 57 at 12 (quoting Cal. Ins.Code § 1861.05(a)). Members of the public can challenge rates both before and after approval in administrative proceedings from which judicial review is available. See Cal. Ins.Code §§ 1858, 1858.6, 1861.05(c); see also MacKay v. Superior Court, 188 Cal. App.4th 1427, 1441, 115 Cal.Rptr.3d 893 (2010); Wahl v. American Security Ins. Co., No. C 08-0555 RS, 2010 WL 4509814, at *2-3 (N.D.Cal. Nov. 1, 2010). Once an insurance rate is approved, an insurer must charge the approved rates or face substantial penalties. Cal. Ins.Code §§ 1858.07(a), 1861.01(c); ASIC Mot., ECF No. 57 at 13.
The argument is that ASIC’s compliance with these provisions shields it from Ells-worth’s claims. ASIC Mot., ECF No. 57 at 13. The relevant section provides:
No act done, action taken or agreement made pursuant to the authority conferred by this chapter shall constitute a violation of or grounds for prosecution of civil proceedings under any law of this State heretofore or hereafter enacted which does not specifically refer to insurance.
Cal. Ins.Code § 1860.1.
Another provision provides that “[t]he business of insurance shall be subject to the laws of California applicable to any other business, including, but not limited to ... unfair business practices laws” [including the UCL], Cal. Ins.Code § 1861.03(a).
The weight of authority in this district and the California Court of Appeals harmonizes sections 1860.1 and 1861.03(a) by narrowly construing the section 1860.1 immunity upon which ASIC relies. See MacKay, 188 Cal.App.4th at 1449-50, 115 Cal.Rptr.3d 893; Wahl, 2010 WL 4509814, at *2-3. As harmonized, “challenges to the reasonableness of an approved rate fall within the exclusive ambit of the chapter and are exempt from the requirements of other laws.” Wahl, 2010 WL 4509814, at *3 (discussing the statutory construction articulated in MacKay). On the other hand, “Insurance Code section 1860.1 protects from prosecution under laws outside the Insurance code only acts done, actions taken and agreements made pursuant to the authority conferred by the ratemaking chapter. It does not extend to insurer conduct not taken pursuant to that authority.” Id. at *3 (quoting MacKay at 1449, 115 Cal.Rptr.3d 893) (alterations and internal quotation marks omitted).
Thus, the question before the court is whether Ellsworth’s claims challenge ASIC’s ratemaking authority. They do not.
In Wahl, the plaintiff alleged that ASIC charged force-placed insurance premiums for periods when the homeowner already had insurance. Id. ASIC argued that Wahl’s claims improperly challenged insurance rates that had been approved by the commissioner. Id. The court rejected ASIC’s argument because the fair reading of Wahl’s UCL claim was that it was “directed at ASIC’s allegedly unfair conduct and not at the Commissioner’s rate.” Id. The court found that the insurance code protected ASIC only in “situations where a plaintiff challenged a charged rate as excessive per se, and effectively asked the Court to calculate an alternative it deemed more ‘fair.’ ” Id.
Ellsworth does not challenge the rates or the premiums he paid but instead challenges the alleged kickbacks.11 See *1083FAC ¶¶ 23, 27. ASIC’s argument that he really is challenging the premiums is unpersuasive. Just because the damages are based on increased costs incurred as a result of the alleged kickback scheme does not transform a challenge to conduct and practices into a challenge to the premiums.
C. The Voluntary Payment Doctrine
ASIC and U.S. Bank argue that Ells-worth paid the $2,250 and thus his claims are barred by the voluntary payment doctrine.
The voluntary payment doctrine is an affirmative defense that bars the recovery of money that was voluntarily paid with knowledge of the facts. See Steinman v. Malamed, 185 Cal.App.4th 1550, 1557, 111 Cal.Rptr.3d 304 (2010); Stern v. AT & T Mobility Corp., No. CV 05-8842, 2008 WL 4382796, at *9 (C.D.Cal. Aug. 22, 2008); Am. Oil Serv. v. Hope Oil Co., 194 Cal.App.2d 581, 586, 15 Cal.Rptr. 209 (1961); Western Gulf Oil Co. v. Title Ins. & Tr. Co., 92 Cal.App.2d 257, 266, 206 P.2d 643 (1949). “Payments of illegal claims enforced by duress, coercion or compulsion, when the payor has no other adequate remedy to avoid it, will be deemed to have been made involuntarily and may be recovered, but the payment must have been enforced by coercion and there must have been no other adequate means available to prevent the loss.” Western Gulf Oil, 92 Cal.App.2d at 265, 206 P.2d 643. “Duress for this purpose is shown ‘where, by reason of the peculiar facts a reasonably prudent man finds that in order to preserve his property or protect his business interests it is necessary to make a payment of money which he does not owe and which in equity and good conscience the receiver should not retain, [and thus] he may recover it.’ ” Steinman, 185 Cal.App.4th at 1558, 111 Cal.Rptr.3d 304 (quoting Western Gulf Oil, 92 Cal. App.2d at 266, 206 P.2d 643).
Ordinarily, an affirmative defense may not be raised on a motion to dismiss. Scott v. Kuhlmann, 746 F.2d 1377, 1378 (9th Cir.1984). An affirmative defense may be considered if the defense is based on undisputed facts or if the basis for the argument appears on the face of the complaint and any materials the court takes judicial notice of. See id.; Hernandez v. Sutter W. Capital, C 09-03658 CRB, 2010 WL 3385046 (N.D.Cal. Aug. 26, 2010) (granting motion to dismiss on statute of limitations grounds based on judicially noticed dates).
The affirmative defense is not apparent as a matter of law from the face of the complaint.
D. Failure to State a Claim
1. Whether Ellsworth Sufficiently Alleges Claims Based on the Kickback Allegations
The allegations are summarized in the fact section. The weight of authority holds similar allegations to be sufficient. See, e.g., McNeary-Calloway v. JP Morgan Chase Bank, N.A., 863 F.Supp.2d 928, 956 (N.D.Cal.2012); Williams v. Wells Fargo Bank N.A., 2011 WL 4901346.
U.S. Bank’s reliance on LaCroix v. U.S. Bank, N.A. does not change this outcome. There, the district court in the District of Minnesota dismissed claims alleging that ASIC paid U.S. Bank kickbacks for force placing flood insurance. No. 11-3236 (DSD/JJK), 2012 WL 2357602 (D.Minn. June 20, 2012). That court found that *1084“[a]lleging that nonparty ASIC has engaged in kickback schemes with other lenders, without specific facts regarding LaCroix’s insurance policy or U.S. Bank’s protocol regarding force-placed insurance, is purely speculative and not sufficient to state a claim for relief.” Id. at *6.
This case is different because Ells-worth’s allegations are more specific. In LaCroix, the only support for the kickback allegations was “an internet article outlining the procedures that banks take when force placing insurance ... [that] neither identifies U.S. Bank nor LaCroix’s insurance provider, [ASIC].” Id. At oral argument, LaCroix’s counsel explained that the internet article discussed ASIC’s parent company, but the complaint did not allege such a connection. Id. n. 6. Here, Ells-worth has provided ample and reliable evidence not only of an industry-wide practice but also that ASIC in particular pays kickbacks to lenders who force-place its flood insurance. See FAC ¶¶ 28-32.
U.S. Bank also cites Galiano v. Fidelity Nat’l Title Ins. Co., 684 F.3d 309, 315 (2d Cir.2012), but that does not change the outcome here either. There, the plaintiff alleged a section 8 RESPA violation but failed to allege any specifics of the alleged kickback scheme. Id. Instead, the plaintiff relied entirely on vague and general allegations of industry-wide practices. See id. at 312 (quoting allegations from the complaint). In contrast, Ellsworth’s allegations are sufficiently specific.
2. Contract Claims
Ellsworth brings two contract-based claims against U.S. Bank: a breach of contract claim based on an express provision and a breach of the implied covenant of good faith and fair dealing claim,
a. Breach of Contract Claim Against U.S. Bank
Under California law, to recover damages under a breach of contract claim, Plaintiff must prove the following: (i) Plaintiff and Defendants entered into a contract; (ii) Plaintiff did all, or substantially all, of the significant things that the contract required him to do; (iii) Defendants failed to do something that the contract required them to do; and (iv) Plaintiff was harmed by that failure. Acoustics, Inc. v. Trepte Construction Co., 14 Cal. App.3d 887, 913, 92 Cal.Rptr. 723 (1971); see First Commercial Mortgage Co. v. Reece, 89 Cal.App.4th 731, 745, 108 Cal. Rptr.2d 23 (2001).
A court may resolve contractual claims on a motion to dismiss if the terms of the contract are unambiguous. Barrous v. BP P.L.C., 10-CV-2944-LHK, 2010 WL 4024774 (N.D.Cal. Oct. 13, 2010); Bedrosian v. Tenet Healthcare Corp., 208 F.3d 220 (9th Cir.2000). By contrast, what the parties intended by an ambiguous contract is a factual determination, United States v. Plummer, 941 F.2d 799, 803 (9th Cir.1991), and thus “[w]here the language ‘leaves doubt as to the parties’ intent,’ the motion to dismiss must be denied.” Monaco v. Bear Stearns Residential Mortg. Corp., 554 F.Supp.2d 1034, 1040 (C.D.Cal. 2008) (quoting Consul Ltd. v. Solide Enters., Inc., 802 F.2d 1143, 1149 (9th Cir. 1986)); see also Trustees of Screen Actors Guild-Producers Pension and Health Plans v. NYCA Inc., 572 F.3d 771, 777 (9th Cir.2009).
Paragraph 5 in the mortgage allows U.S. Bank to force-place flood insurance. FAC Ex. 1, ECF No. 26-1 at 7. Paragraph 9 requires reasonableness and appropriateness: “if Borrower “fails to perform the covenants and agreements contained in this Security Instrument, ... then Lender may do and pay for whatever is reasonable or appropriate to protect Lender’s interest in the Property and rights under this Security Instru*1085ment____” See id. at 8 (quoted in full above at p. 1070).
Other courts have concluded that identical language “provides a basis for the claim that Defendants may force-place insurance only to the extent such insurance ‘is necessary’ to protect the property’s value and [the lender’s] rights in the property.” See McNeary-Calloway, 863 F.Supp.2d at 956.
McNeary-Calloway was a class action in which borrowers challenged their lenders’ force-placed insurance practices and alleged breach of contract based on mortgage terms that are almost identical to Ellsworth’s. Compare McNeary at 955-56 with FAC Ex. 1, ECF No. 26-1 at 7-8. The court denied the banks’ motion to dismiss the plaintiffs’ claims for breach of contract based on the banks’ allegedly force-placing overpriced and backdated flood insurance and for taking kickbacks. Id. The court examined contractual language nearly identical to paragraph 5 of Ellsworth’s mortgage. Id. The court noted that the contract did not “necessarily authorize charges regardless of amount and regardless of whether Defendants receive a portion of the premium ... [nor] authorize[ ] backdating .... ” Id. at 956. Because the court could “not say that the contracts’ terms unambiguously authorize Defendants’ alleged behavior, the Court denies Defendants’ motion to dismiss the California Plaintiffs’' breach of contract claim.” Id. The court also considered a paragraph nearly identical to Ellsworth’s section 9, finding that it “could be interpreted as explicitly restricting the lender’s discretion in force-placing insurance.”12 Id.
The court agrees with this analysis. U.S. Bank’s arguments do not change the conclusion. First, it contends that the specific contract provision in section 5, “Property Insurance,” trumps the more general provision in section 9, “Protection of Lender’s Interest in the Property.” U.S. Bank Mot., ECF No. 68 at 24. That canon of construction does not render the contract unambiguous so that a motion to dismiss is appropriate. Second, U.S. Bank contends that the mortgage permits the kickbacks and backdating, but it relies on cases that are distinguishable. See Schilke v. Wachovia Mortg., FSB, 820 F.Supp.2d 825, 832-33 (N.D.Ill.2011) (granting motion to dismiss breach of contract claim based on force-placing allegedly over-priced insurance where plaintiff signed mortgage loan that expressly authorized kickbacks, commissions, and force-placed insurance costing two to five times the retail price); Webb v. Chase Manhattan Mortg. Corp., No. 2:05-CV-0548, 2008 WL 2230696, at *19 (S.D.Ohio May 28, 2008) (applying summary judgment standard).
b. Covenant of Good Faith and Fair Dealing
The covenant of good faith and fair dealing is implied in every contract and, in most situations, prevents one party from “unfairly frustrating the other party’s right to receive the benefits” of the contract. See, e.g., Guz v. Bechtel Nat., Inc., 24 Cal.4th 317, 349, 100 Cal.Rptr.2d 352, 8 P.3d 1089 (2000); See Wolf v. Wells Fargo Bank, N.A., No. C11-01337 WHA, 2011 WL 4831208, at *4 (N.D.Cal. Oct. 12, 2011) (citing McClain v. Octagon Plaza, LLC, 159 Cal.App.4th 784, 799, 71 Cal.Rptr.3d 885 (2008)). The covenant is a “ ‘supple*1086ment to an existing contract, and thus does not require parties to negotiate in good faith prior to any agreement.’ ” Bulaoro v. Oro Real Inc., No. C 11-03059 WHA, 2011 WL 6372458, at *4 (N.D.Cal.2011) (quoting McClain, 159 Cal.App.4th at 799, 71 Cal.Rptr.3d 885).
“The covenant of good faith finds particular application in situations where one party is invested with a discretionary power affecting the rights of another. Such power must be exercised in good faith.” Carma Developers (Cal), Inc. v. Marathon Development California, Inc., 2 Cal.4th 342, 372, 6 Cal.Rptr.2d 467, 826 P.2d 710 (1992); see Perdue v. Crocker Nat’l Bank, 38 Cal.3d 913, 923, 216 Cal. Rptr. 345, 702 P.2d 503 (1985) (“where a contract confers on one party a discretionary power affecting the rights of the other, a duty is imposed to exercise that discretion in good faith and in accordance with fair dealing”) (internal quotations omitted). “The exercise of discretionary powers is evaluated under the implied covenant to assure that the promises of the contract are effective and in accordance with the parties’ legitimate expectations.” McNeary-Calloway, 863 F.Supp.2d at 956-57; see Carma, 2 Cal.4th at 373-74, 6 Cal.Rptr.2d 467, 826 P.2d 710; Gabana Gulf Distrib., Ltd. v. GAP Int’l Sales, Inc., No. C 06-02584 CRB, 2008 WL 111223, at *8 (N.D.Cal. Jan. 9, 2008); Schwarzkopf v. Int’l Bus. Machs., Inc., No. C 08-2715 JF (HRL), 2010 WL 1929625, at *13 (N.D.Cal. May 12, 2010). The covenant does not, however, “prohibit a party from doing that which is expressly permitted by an agreement. On the contrary, as a general matter, implied terms should never be read to vary express terms.” Carma, 2 Cal.4th at 374, 6 Cal.Rptr.2d 467, 826 P.2d 710.
Here, Ellsworth alleges that his mortgage contract with U.S. Bank gives the bank discretion to, among other things, force-place flood insurance according to the contract’s terms. The FAC alleges that “U.S. Bank breached this duty and abused any discretion it may have had” by purchasing backdated flood insurance and arranging for kickbacks in connection with the force-placed flood insurance. FAC ¶ 70.
These allegations are grounded in California precedent, and the McNeary court found similar allegations sufficient at this stage. See McNeary, 863 F.Supp.2d at 958. For example, the California Supreme Court recognizes the covenant’s application in situations where one party has discretion to act under a contract. See, e.g., Carma, 2 Cal.4th at 374, 6 Cal.Rptr.2d 467, 826 P.2d 710.
Another example is Gutierrez v. Wells Fargo & Co., 622 F.Supp.2d 946, 954 (N.D.Cal.2009). There, the plaintiff accused Wells Fargo of posting larger withdrawals to his checking account before smaller ones so as to maximize the number of overdraft penalties the bank could charge. On summary judgment, Wells Fargo argued that the consumer account agreement between Wells" Fargo and the plaintiff expressly permitted the bank to post items to the plaintiffs checking account “in any order the bank chooses,” subject to law. Id. Nonetheless, the court refused to grant summary judgment for the bank because the bank’s discretionary authority was still subject to the covenant of good faith and fair dealing. The contract “language does nothing more than give discretion to the bank and once, again, that measure of discretion must be exercised subject to good faith and fair dealing and not so as to maximize bank revenue and to penalize customers as much as possible.” Id.
The court finds the detailed analysis in McNeary-Calloway particularly persuasive. That case, which closely parallels this one, stated persuasively that
*1087the implied covenant governs Defendants’ discretion in force-placing insurance. Although Defendants have the right to set the scope and extent of hazard insurance coverage — and explicitly warn that FPI may be “significantly” more expensive than coverage on the open market — the Plaintiffs here have stated a claim under the implied covenant that Defendants abused this discretion by acting in bad faith and outside the reasonable expectations of the parties. Whether Defendants’ acts were done in bad faith and not within the reasonable expectations of the parties is a question of fact that cannot be decided at the pleading stage.
McNeary-Calloway, 863 F.Supp.2d at 958 (citing Gabana, 2008 WL 111223, at *8; Locke v. Warner Bros., Inc., 57 Cal. App.4th 354, 367, 66 Cal.Rptr.2d 921 (1997)).
U.S. Bank argues that the covenant of good faith and fair dealing requires that “no party to the contract will do anything which would deprive the others of the benefits of the contract.” U.S. Bank Mot., ECF No. 68 at 27. It asserts that the cases gloss over this element and Ells-worth fails to identify what benefit of the mortgage he was denied by the force-placement of coverage. Id. at 16. At this pleadings stage, the court finds the complaint’s allegations sufficient.
3. Unjust Enrichment/Restitution Claims
Ellsworth’s third and fourth claims are for unjust enrichment or restitution against U.S. Bank and ASIC. See FAC ¶¶ 75-81, 83. Defendants argue that under California law, a party may not assert an unjust enrichment claim when it alleges a violation of an express contract. See, e.g., U.S. Bank Mot., ECF No. 68 at 28. The two contracts here are the mortgage with U.S. Bank and the flood insurance policy that ASIC issued. Ellsworth counters that at the motion to dismiss stage, courts allow both to proceed. Opp’n, ECF No. 73 at 18.
“California courts appear to be split on whether a stand alone cause of action for unjust enrichment is anything more than “a general principle, underlying various legal doctrines and remedies.”” Mattel, Inc. v. MGA Entm’t, Inc. & Consol. Actions, 782 F.Supp.2d 911, 1014 (C.D.Cal. 2011) (noting that “stand alone claims for unjust enrichment are simply redundant of relief already available under other existing law”). Courts in this district have held that California law permits unjust enrichment claims, in which “restitution may be awarded either (1) in lieu of breach of contract damages, where an asserted contract is found to be unenforceable or ineffective, or (2) where the defendant obtained a benefit from the plaintiff by fraud, duress, conversion, or similar conduct, but the plaintiff has chosen not to sue in tort.” Oracle Corp. v. SAP AG, No. C 07-1658 PJH, 2008 WL 5234260, at *8 (N.D.Cal. Dec. 15, 2008) (citing McBride v. Boughton, 123 Cal.App.4th 379, 388, 20 Cal. Rptr.3d 115 (2004)); see also Wolf, 2011 WL 4831208, at *8 (“Restitution [under an unjust enrichment theory] may be awarded in lieu of breach of contract damages when the parties had an express contract, but it was procured by fraud or is unenforceable or ineffective for some reason.”) (citing McBride, 123 Cal.App.4th at 388, 20 Cal.Rptr.3d 115).
“To state a claim for restitution, a plaintiff ‘must plead receipt of a benefit and the unjust retention of the benefit at the expense of another.’ ” Walters v. Fid. Mortg. of Cal., No. 2:09-cv-3317 FCD/KJM, 2010 WL 1493131, at *12 (E.D.Cal. Apr. 14, 2010) (quoting Lectrodryer v. SeoulBank, 77 Cal.App.4th 723, 726, 91 Cal. Rptr.2d 881 (2000)).
*1088Plaintiffs’ unjust enrichment claim is based on Defendants’ alleged kickback scheme and the unjust retention of those commissions for backdated premiums. See FAC ¶¶ 75-79, 83. ASIC also allegedly received improper benefits, including “(1) non-competitive premiums that ASIC would not have secured absent a kickback to U.S. Bank to do business with ASIC, and (2) premiums for backdated insurance policies.” Id. ¶ 83.
There are two express contracts. Still, given the allegations about undisclosed kickbacks and inappropriate backdating, the court follows McNeary and holds that Ellsworth states a restitution claim.
4. Unfair Competition Law Claims Against U.S. Bank and ASIC
California Business & Professions Code § 17200, also known as California’s “Unfair Competition Law,” prohibits “any unlawful, unfair or fraudulent” business practices. Cal. Bus. & Prof.Code § 17200. “Since section 17200 is [written] in the disjunctive, it establishes three separate types of unfair competition. The statute prohibits practices that are either ‘unfair’ or ‘unlawful,’ or ‘fraudulent.’ ” Pastoria v. Nationwide Ins., 112 Cal.App.4th 1490, 1496, 6 Cal.Rptr.3d 148 (2003); see also Cel-Tech Commc’ns, Inc. v. Los Angeles Cellular Tel. Co., 20 Cal.4th 163, 180, 83 Cal.Rptr.2d 548, 973 P.2d 527 (1999).
Ellsworth alleges that U.S. Bank and ASIC violated the UCL’s “unfair” prong. FAC ¶¶ 89, 97. There is disagreement among California courts regarding the definition of “unfair” business practices in consumer cases such as this. As the district court in Phipps v. Wells Fargo explained, there is a split of authority that has resulted in three different tests:
The test applied in one line of cases requires “that the public policy which is a predicate tó a consumer unfair competition action under the ‘unfair’ prong of the UCL must be tethered to specific constitutional, statutory, or regulatory provisions.” Drum [v. San Fernando Valley Bar Ass’n], 182 Cal.App.4th [247] at 256, 106 Cal.Rptr.3d 46 [ (2010) ] (citing Bardin v. Daimlerchrysler Corp., 136 Cal.App.4th 1255, 1260-1261, 39 Cal. Rptr.3d 634 (2006); Davis v. Ford Motor Credit Co., 179 Cal.App.4th at 581, 595-596, 101 Cal.Rptr.3d 697 (2009); Gregory v. Albertson’s Inc., 104 Cal. App.4th 845, 854, 128 Cal.Rptr.2d 389 (2002)).
A second line of cases applies a test to determine whether the alleged business practice “is immoral, unethical, oppressive, unscrupulous or substantially injurious to consumers and requires the court to weigh the utility of the defendant’s conduct against the gravity of the harm to the alleged victim.” Drum, 182 Cal.App.4th at 257, 106 Cal.Rptr.3d 46 (citing Bardin, 136 Cal.App.4th at 1260, 39 Cal.Rptr.3d 634; Davis, 179 Cal. App.4th at 594-595, 101 Cal.Rptr.3d 697).
The test applied in a third line of cases draws on the definition of “unfair” in section 5 of the Federal Trade Commission Act (15 U.S.C. § 45, subd. (n)), and requires that “(1) the consumer injury must be substantial; (2) the injury must not be outweighed by any countervailing benefits to consumers or competition; and (3) it must be an injury that consumers themselves could not reasonably have avoided.” Drum, 182 Cal. App.4th at 257, 106 Cal.Rptr.3d 46 (citing Davis, 179 Cal.App.4th [at] 597-598, 101 Cal.Rptr.3d 697; Camacho v. Automobile Club of Southern California, 142 Cal.App.4th 1394, 1403, 48 Cal.Rptr.3d 770 (2006)).
No. CV F 10-2025 LJO SKO, 2011 WL 302803, at *16 (E.D.Cal. Jan. 27, 2011); see *1089Davis v. HSBC Bank Nevada, N.A., 691 F.3d 1152, 1169-71 (9th Cir.2012).
Ellsworth’s claims under the unfair prong are based on the same allegations repeated throughout the complaint: Defendants “manipulated] the force-placed insurance process, arranged for and paid kickbacks in connection with force-placed insurance, and retained money for force-placing backdated flood insurance policies.” FAC ¶¶ 89, 97.
The court follows the weight of authority in district court cases that denied motions to dismiss claims supported by similar allegations in force-placed flood insurance cases. See U.S. Bank Opp’n, ECF No. 73 at 19; see also McNeary-Calloway, 863 F.Supp.2d at 961-62 (denying motion to dismiss claims alleging unfair force-placed flood insurance practices under UCL because the court could not determine, as a matter of law, that the allegations would not meet any of the unfairness tests); Hofstetter v. Chase Home Fin., LLC, No. C 10-01313 WHA, 2010 WL 3259773, at *15 (N.D.Cal. Aug. 16, 2010) (denying motion to dismiss unfair UCL claim alleging lender that force-placed flood insurance violated principles articulated in regulations).
U.S. Bank argues that the Ninth Circuit’s opinion in Davis v. HSBC Bank Nevada, N.A., 691 F.3d at 1169-71, compels a different result. There, the court addressed the various UCL tests applied in California and dismissed unfair business practice claims against Best Buy that failed the applicable tests. See id. at 1170-71. The plaintiff claimed that Best Buy failed to adequately disclose the annual fee on a credit card it offered. Id. at 1157. The Ninth Circuit affirmed dismissal because Davis failed to allege any facts to support his claim under the tethering test. Id. at 1170. Under the balancing test, the court found that Best Buy sufficiently warned Davis of the fee and gave him 90 days to cancel his account for a full refund. Id. This court, however, finds the present case distinguishable.
Ellsworth satisfies the tethering test, which requires the unfairness alleged to be “tethered to some legislatively declared policy or proof of some actual or threatened impact on competition.” Davis, 691 F.3d at 1170. The FAC alleges that the kickback arrangement “is inconsistent with the NFIA, which only allows lenders and servicers to ‘charge the borrower for the cost of premiums and fees incurred by the lender or servicer for the loan in purchasing the insurance.’ ” FAC ¶ 37 (quoting 42 U.S.C. § 4012(e)(2); citing 12 C.F.R. § 22.3). U.S. Bank does not dispute that this is a sufficient “tether.” Instead, it argues that it did nothing more than what was authorized by statute. U.S. Bank Reply, ECF No. 74 at 21. Though that may be true, it is a fact question to be answered in discovery, not the basis for a motion to dismiss.
As for the backdating allegations, the FAC alleges that “[Retroactively placing flood insurance policies also is inconsistent with the advance notice requirements of the NFIA.” FAC ¶ 44 (citing 42 U.S.C. § 4012a(e) (the statutory analogue to 12 C.F.R. § 22.7)). As discussed above, on the record presented, the court agrees.
Finally, the court rejects ASIC’s argument that Ellsworth’s claim under the UCL’s unfairness prong must allege that ASIC violated a statute to avoid dismissal. ASIC Mot., ECF No. 57 at 25. To. hold otherwise would render the UCL’s unlawful prong meaningless. While Ellsworth’s claims do not implicate the constitutional, statutory, or regulatory provisions under which ASIC is regulated, they do “sugges[]t ASIC engaged in similarly coercive behavior.” Wahl v. Am. Sec. Ins. Co., (“Wahl I”), No. C 08-00555 RS, 2010 WL 1881126, at *7 (N.D.Cal. May 10, 2010)
*1090Ellsworth also satisfies the balancing test given the lenient standard on a motion to dismiss. Under the balancing test, the court examines the FAC to determine whether it sufficiently alleges that the harm of U.S. Bank’s and ASIC’s business practices outweigh their utility. The FAC satisfies this standard. U.S. Bank argues that its actions are akin to Best Buy’s in Davis in that it was “fully transparent” in its notice to Ellsworth, and he had a full opportunity to avoid the quoted premium.” U.S. Bank Mot., ECF No. 68 at 29-30. The court appreciates the argument and declines to make that determination as a matter of law on this record. For example, a borrower may not be able to avoid force-placed retroactive insurance if he were unable to purchase it on his own. Nor were any kickbacks transparently disclosed. Based solely on the FAC, the court finds that ASIC’s attempt to manipulate the insurance market by offering kickbacks to lenders who force-place premium-priced policies fails the balancing test.13 Because Ellsworth’s UCL claims survive under multiple theories, the court does not reach the Camacho test.
Accordingly, the court denies U.S. Bank’s and ASIC’s motions to dismiss Ellsworth’s fifth and sixth claims for relief.
V. CONCLUSION
The court denies the motions to dismiss. This disposes of ECF Nos. 57 & 68.
IT IS SO ORDERED.
. Citations are to the Electronic Case File ("ECF”) with pin cites to the electronically-generated page numbers at the top of the document.
. Ellsworth brings his first four claims as an individual and on behalf of a nationwide class and sub-class and the fifth and sixth claims as an individual and on behalf of a California class and sub-class.
. "Designated loan means a loan secured by a building or mobile home that is located or to be located in a special flood hazard area in which flood insurance is available under the [National Flood Insurance Act of 1968].” 12 C.F.R. § 22.2(e).
. The OCC has promulgated a similar regulation:
If a bank, or a servicer acting on behalf of the bank determines at any time during the term of a designated loan that the building ... is not covered by flood insurance or is covered by flood insurance in an amount less than the amount required under § 22.3, then the bank or its servicer shall notify the borrower that the borrower should obtain flood insurance, at the borrower’s expense, in an amount at least *1075equal to the amount required under § 22.3, for the remaining term of the loan. If the borrower fails to obtain flood insurance within 45 days after notification, then the bank or its servicer shall purchase insurance on the borrower's behalf. The bank or its servicer may charge the borrower for the cost of premiums and fees incurred in purchasing the insurance.
12 C.F.R. § 22.7.
. ASIC incorporated by reference U.S. Bank's preemption arguments in U.S. Bank's motion to dismiss Ellsworth’s original complaint. See ASIC Mot., ECF No. 57 at 17 (citing ECF No. 20). Because Ellsworth amended his complaint, that motion was mooted, and the court considers only the new preemption arguments in U.S. Bank's motion to dismiss the FAC. See ECF No. 68.
. The court applies the version in effect as of July 2, 2007. The parties cited different versions: Ellsworth cites the amended version, and U.S. Bank cites the previous one. U.S. Bank Opp’n, ECF No. 73 at 21-22; U.S. Bank Mot., ECF No. 68 at 13. The NBA preemption regulations were amended by Title X of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (“Dodd-Frank Act”), Publ. L. No. 111-203, 124 Stat. 1376 (2010); id. at §§ 1041-48. The preemption amendments did not become effective until July 21, 2011. Id. at § 1048 (preemption amendments to be effective at "transfer date”); Designated Transfer Date, 75 Fed. Reg. 57252 (Sept. 20, 2010) (establishing July 21, 2011 as the transfer date). In addition, the Dodd-Frank Act's preemption provisions operate prospectively, beginning July 2, 2010. Dodd-Frank Act § 1043 (codified at 12 U.S.C. § 5553 (July 21, 2010)). At the hearing, Plaintiff's counsel said that the version did not matter here.
. As discussed below, the plaintiffs’ claims were also preempted because they conflicted with the real estate lending power under 12 C.F.R. § 34.4(a).
. It is undisputed that U.S. Bank is a national bank under the NBA. See FAC, ECF No. 26, ¶ 8.
. In this context, the court does not see (and U.S. Bank has not established) any meaningful distinction between 12 C.F.R. 34.4(b) (limiting preemption under real estate lending powers), and 12 C.F.R. § 7.4002(d) ("The OCC applies preemption principles derived from the United States Constitution, as interpreted through judicial precedent, when determining whether State laws apply that purport to limit or prohibit charges and fees described in this section.”).
. "The filed rate doctrine bars suits against regulated utilities grounded on the allegation that the rates charged by the utility are unreasonable. Simply stated, the doctrine holds that any ‘filed rate’ — that is, one approved by the governing regulatory agency — is per se reasonable and unassailable in judicial proceedings brought by ratepayers.” Wegoland Ltd. v. NYNEX Corp., 27 F.3d 17, 18 (2d Cir.1994).
. The court disregards ASIC’s statement in its reply brief that it “paid no commission to U.S. Bank or its affiliates in connection with *1083the flood insurance placed on plaintiff’s homestead.” ASIC Reply, ECF No. 71 at 7 (citing Declaration of Ronald K. Wilson, ECF No. 71-4, ¶ 3). As Ellsworth points out in his objection to ASIC’s reply evidence, ECF No. 72, this declaration improperly contradicts factual allegations on a motion to dismiss.
. U.S. Bank argues that McNeary-Calloway applies an incorrect rationale because, according to U.S. Bank, “where a plaintiff pleads breach of contract, the question is not whether the contract ‘authorized’ the defendant’s action, but instead whether any term of the contract prohibited it. Id. at 25. But the court was merely making the point that the broad contractual language did not unambiguously support the defendants’ reading, and that this was dispositive on a Rule 12(b)(6) motion.
. As discussed above, the court does not find that 42 U.S.C. § 4012a(e)(l) & (2) required U.S. Bank to force-place backdated flood insurance. Accordingly, the court disagrees with the Safe Harbor Doctrine argument that ASIC raised in its reply brief. See ECF No. 71 at 14-16.