Texas imposes one tax on corporations doing business in that state and calls it a “franchise tax.”1 The tax is calculated by comparing a net income component and a net capital component; the tax due is the larger of the two components. Missouri allows an income tax credit for income tax paid to another state.2 In Herschend v. Director of Revenue,3 this Court held that, despite its name, the Tennessee “excise tax” was essentially identical to Missouri’s income tax and, therefore, it was an income tax for § 143.081 purposes. In this case, the taxpayers ask the Court to extend Herschend to cover the portion of the Texas tax that they claim is attributable to income. We decline to do so. The capital and income portions of the Texas tax are inseparable; thus, even the “income component” of the tax is not an income tax.
John and Dorothy Brennan are Missouri residents who reported 1993 income from Mr. Brennan’s ownership in Crown Packaging, a subchapter S corporation doing business in Texas. Crown paid $21,524 in 1994 Texas franchise tax. On the theory that $21,211 of this amount was actually income tax, the Brennans sought a Missouri credit for their pro rata share of that payment.4 The parties have stipulated that, if the earned surplus component of the Texas tax is an income tax, the Bren-nans are entitled to a $8071 credit on their 1993 Missouri return.5
The Tennessee “excise tax” at issue in Herschend was based on a corporation’s “net earnings,” a term which was defined as federal taxable income.6 The Court found that Missouri’s income tax was practically identical, despite Tennessee’s label: “The two taxes, both based solely on federal taxable income, are essentially the same, the only difference being that Tennessee imposes the tax at the rate of 6% while Missouri imposes the tax at the rate of 6¾%. Therefore, we conclude that the Tennessee tax, under Missouri law, is a corporate income tax entitling [taxpayers] to a credit under § 143.081.1.”7
Texas’s “franchise tax” is the greater of .25% of the corporation’s “net taxable capital” and 4.5% of its “net taxable earned surplus.” 8 Like Tennessee’s net earnings, Texas’s net taxable earned surplus is based upon federal taxable income.9 But since the Texas tax is based upon the two components, it is not “based solely on federal income,” as the Missouri tax is.
The Brennans recognize this, and do not argue that the entire Texas tax is an income tax. Instead, they urge the Court to split the tax into its component parts and to allow them to treat the earned surplus portion of the tax as an income tax. But this tax cannot be divided. Section 143.081 refers to “the amount of any income tax imposed ... by another state.... ” The statute implies that the entire tax is either an income tax or is not. This Court has previously approached the problem of categorizing taxes *212by charactering the entire tax as an income tax or some other type of tax. In King v. Procter & Gamble,10 the Court issued a blanket rule that franchise taxes, however calculated, were not income taxes. The idea that franchise taxes and income taxes are mutually exclusive is implicit in that decision and in others dealing with the question.11
Even if we accept the Brennans’ argument that components of taxes can be treated separately under the statute, dividing the Texas tax’s income component from its capital component is impossible. Crown’s 1994 earned surplus component was $21,524 and its capital component was $313. The Brennans argue that they should be allowed to subtract the capital component from the earned surplus component and treat the difference as a creditable income tax. But this amount is not measured by income. Under the Brennans’ proposed calculation, if Crown instead had a capital component of $20,313, with the same income component, its federal taxable income would be the same, its Texas tax would be the same, but the amount of income tax paid for the purpose of Missouri’s credit would be $20,000 less. The Brennans’ split of the Texas tax would result in corporations with a smaller capital component receiving a larger income tax credit from Missouri, even though their federal taxable income and their Texas tax amounts are exactly the same. A tax that rises and falls based upon the size of a corporation’s capital — even when income is constant — is not a tax on income, and, therefore, is not creditable under § 143.081.
The decision of the Administrative Hearing Committee is affirmed.
HOLSTEIN, C.J., and BENTON, ROBERTSON and COVINGTON, JJ., concur. LIMBAUGH, J., dissents in separate opinion filed. PRICE, J., concurs in opinion of LIMBAUGH, J.. Tex.Tax Code Ann. § 171.001 (West 1992).
. § 143.081, RSMo 1994.
. 896 S.W.2d 458 (Mo. banc 1995).
. See Wolff v. Director of Revenue, 791 S.W.2d 390, 392 (Mo. banc 1990) (holding that Missouri shareholders of S corporations are taxable on their pro rata share of all corporate income, subject to credit for the pro rata share of income tax paid to another state).
. The parties have also stipulated that the question of whether the Texas franchise tax is an income tax controls whether the Brennans must "add back” their share of Crown's payment to their federal adjusted gross income. See §§ 143.121, 143.141(2), 143.411, RSMo 1994.
. Herschend, 896 S.W.2d at 460.
. Id.
. Tex.Tax Code Ann. § 171.002 (West 1992).
. Tex.Tax Code Ann. § 171.110 (West 1992).
. 671 S.W.2d 784, 785 (Mo. banc 1984).
. See e.g., Herschend, 896 S.W.2d at 460 ("Tennessee has a separate corporate franchise tax.... It is difficult to fathom why there would be two corporate franchise taxes_ The critical distinction between an income tax and a franchise tax is that the former is imposed to compensate &e state for benefits already received, while the latter is imposed and payable in advance for the privilege of exercising the right to do business in the state in &e future.”); Centerre Bank v. Director of Revenue, 744 S.W.2d 754, 757 (Mo. banc 1988) (determining the character of a tax by its object, rather than by how it is calculated).