MEMORANDUM OPINION
BUCKLEY, Special Trial Judge: This matter was assigned to the undersigned pursuant to Rules 180, 181 and 183, Tax Court Rules of Practice and Procedure. It is before us on respondent's motion to dismiss for lack of jurisdiction.
Petitioner on June 18, 1985, filed a petition to this Court in regard to his 1982 taxable year. He alleged therein that he had not received a notice of deficiency from respondent for that year and argued that none was mailed or, alternatively, *417 that it was not sent to petitioner's last known address in accordance with section 6212. 1 Petitioner resided at Calabasas, California, at the time of filing his petition herein.
A statutory notice of deficiency was mailed by certified mail to petitioner on August 1, 1984, regarding his 1982 taxable year. The notice was mailed to him at 7131 Owensmouth, Suite 96D, Canoga Park, California 91303. There is no indication that the notice was returned to respondent. That address was the one shown on petitioner's 1982 tax return.
If respondent's notice was sent to petitioner's last known address, the petition to this Court must have been filed on or before October 30, 1984, in order for it to be timely and for this Court to have jurisdiction over this matter. Sec. 6213. As noted, the petition in fact was filed June 18, 1985.
Petitioner's 1983 Federal income tax return was filed on or before April 16, 1984. The address shown on that return was P.O. Box 162, Agoura Hills, California 91301. Petitioner contends that respondent at the time of mailing the notice of deficiency*418 to petitioner on August 1, 1984, had notice of petitioner's new address at Agoura Hills as a result of the new address shown on petitioner's 1983 return. Thus, petitioner contends that the notice of deficiency was not sent to petitioner's last known address and hence was invalid.
Our question is therefore whether respondent had reasonable knowledge of the fact that petitioner's address had changed from Canoga Park to Agoura Hills when respondent mailed the deficiency notice. This is, of course, a question of fact. Maxfield v. Commissioner,153 F.2d 325">153 F.2d 325, 327 (9th Cir. 1946). The Internal Revenue Service, as a general rule, is entitled to treat the address appearing on the return for the year in question as to the last known address, absent "clear and concise notification" of a new address. Alta Sierra Vista, Inc. v. Commissioner,62 T.C. 367">62 T.C. 367, 374 (1974), affd. without published opinion 538 F.2d 334">538 F.2d 334 (9th Cir. 1976). We recognize that the "last known address" to which the notice of deficiency is mailed assumes great importance in the taxpayer's ability to obtain a prepayment judicial redetermination of his tax liabilities. Unfortunately, *419 the phrase "last known address" is not defined in the applicable Code section or attendant regulations. We held in Brown v. Commissioner,78 T.C. 215">78 T.C. 215, 218-219 (1982), that this phrase means:
the taxpayer's last permanent address or legal residence known by the Commissioner, or the last known temporary address of a definite duration to which the taxpayer has directed the Commissioner to send all communications during such period. Weinroth v. Commissioner,74 T.C. 430">74 T.C. 430, 435 (1980); Alta Sierra Vista, Inc. v. Commissioner,62 T.C. 367">62 T.C. 367, 374 (1974), affd. without published opinion 538 F.2d 334">538 F.2d 334 (9th Cir. 1976). Stated otherwise, it is the address to which, in light of all the surrounding facts and circumstances the respondent reasonably believed the taxpayer wished the notice to be sent. Weinroth v. Commissioner,supra;Looper v. Commissioner,73 T.C. 690">73 T.C. 690, 696 (1980). The relevant focus is thus on the Commissioner's knowledge rather than on what in fact may have been the taxpayer's actual address in use. Alta Sierra Vista, Inc. v. Commissioner,supra.
We have*420 held, generally, that the filing of a subsequent return with a change of address does not constitute such clear and convincing evidence. Weinroth v. Commissioner,74 T.C. 430">74 T.C. 430, 436-437 (1980); Budlong v. Commissioner,58 T.C. 850">58 T.C. 850, 852-853 (1972). However, we follow, for purposes of this matter, 2 the holdings of the Ninth Circuit to the effect that a subsequently filed tax return with a new address does give the Internal Revenue Service notice of the new address. See, e.g., United States v. Zolla,724 F.2d 808">724 F.2d 808, 810 (9th Cir. 1984). We must face the question here, however, as to just when the Internal Revenue Service had such notice, whether on the filing date of the 1983 return or at some other time subsequent thereto. If the Internal Revenue Service did not have effective notice until after August 1, 1984, of a change of address, our jurisdiction over this matter must fail. Petitioner's 1983 return was timely filed on or prior to April 16, 1984, with the Fresno Service Center of the Internal Revenue Service. The Transcript of the Internal Revenue Service's National Computer Center indicates that petitioner's new address as indicated*421 on his 1983 tax return was not posted until September 17, 1984, some 47 days after the issuance of the notice of deficiency. The delay between the return's timely filing date of April 16, 1984, and the computer posting of petitioner's 1983 return was, therefore, at least 22 weeks, or approximately five months. Respondent's procedure for the posting of return information, during the peak processing period, is to set aside returns that come in fully paid in order to process first returns upon which refunds are claimed. Respondent's operating goal during peak processing times is to have posting of refund returns completed within eight to ten weeks. After the refund returns are posted, the Service Center then turns to the handling of non-refund returns. Petitioner's 1983 return was such a return.
When the returns are received in the mailroom of the Service Center, they are placed in batches*422 of 100 similar returns. They are forwarded to a group called Returns Analysis where they are reviewed for completeness, then a Document Locater Number is stamped in the upper right hand portion of the return. Next, returns are forwarded to a computer area and entered in the computer, where if the computations are correct, they are placed on magnetic tape. The magnetic tape is then forwarded to the National Computer Center in Martinsburg, West Virginia, where it is merged and cross-checked with information stored and maintained for the entire country. The National Computer Center then creates another magnetic tape which is then forwarded back to the Service Center, in this instance, Fresno. It is only at that point on September 17, 1984, that the information contained on the return about petitioner's new address became available to respondent for discovery. Respondent's transcript indicates that petitioner's 1983 return was handled by the Service Center in the normal course of its business.
The mere fact that the 1983 return was filed on or before April 16, 1984, does not serve to provide respondent with actual notice of petitioner's change of address. It would be unreasonable*423 to ascribe respondent with notice solely because of physical control of the return at the Fresno Service Center. We take notice of the fact that the Fresno Service Center handled great numbers of returns during this period.
Petitioner does not allege that he notified the Internal Revenue Service of an address change nor that the notice of deficiency was returned to the Internal Revenue Service from his Canoga Park address so as to give them notice of an address change. We note that even had it been returned to the Internal Revenue Service after its issuance, petitioner's new address would not have been available to them until September. Nothing occurred in this matter to alert the Internal Revenue Service that the notice had not in fact been received by petitioner. Compare Wallin v. Commissioner,744 F.2d 674">744 F.2d 674 (9th Cir. 1984).
Under the circumstances herein, we find that the Internal Revenue Service acted reasonably in mailing the notice of deficiency to Canoga Park. Petitioner had not, as a practical matter, advised the Internal Revenue Service of his change of address as of the date of mailing of the notice. See Bagwell v. Commissioner,T.C. Memo. 1984-93.*424 There is nothing in the record to indicate that prior to the issuance of the statutory notice, respondent had any communication with petitioner at his new address. Cf. Pyo v. Commissioner,83 T.C. 626">83 T.C. 626 (1984). Further, no information whatsoever has been presented to indicate that the Internal Revenue Service knew that petitioner did not receive the notice.
Since our jurisdiction is predicated upon the timely filing of a petition to this Court within 90 days of the issuance of the deficiency notice (sec. 6213) and since petitioner failed to so file, we must grant respondent's motion to dismiss for lack of jurisdiction.
An appropriate order will be issued.
Footnotes
1. Section references are to the Internal Revenue Code of 1954, as amended, unless otherwise indicated.↩
2. Golsen v. Commissioner,54 T.C. 742">54 T.C. 742 (1970), affd. 445 F.2d 985">445 F.2d 985 (10th Cir. 1971), cert. denied 404 U.S. 940">404 U.S. 940↩ (1971). Since any appeal herein lies to the Ninth Circuit, we follow that Court for purposes of our determination of jurisdiction herein.