MEMORANDUM OPINION
PANUTHOS, Special Trial Judge: This case is before the Court on respondent's Motion to Dismiss for Lack of Jurisdiction. 1 The issue for decision is whether the notice of deficiency was mailed to petitioner at her last know address.
By notice of deficiency, dated July 17, 1985, respondent determined a deficiency for the taxable year 1982 in the amount of $ 2,616. The notice was sent by certified mail on July 17, 1985, to petitioner at 112 S. Home 3, Oak Park, Illinois 60302 (the South Home address). The petition was filed April 29, 1987, which date is 651 days after the mailing of the notice of deficiency. 2
In his motion, respondent argues that this case should be dismissed for lack of jurisdiction because the petition was not filed within the time required by section 6213(). Petitioner argues that the notice of deficiency was not sent to her last known address and that she did not receive the notice. In this regard, petitioner states that tat the time the notice of deficiency was issued, she resided at 400 S. Scoville #3E, Oak Park, Illinois 60302 (the South Scoville address). Petitioner further states that she gave respondent notice of this new address when she filed her 1983 and 1984 joint Federal income tax returns with her husband under the names of Robert and Susan Taylor Schroeder and showing the South Scoville address.
Section 6213(a) provides that a petition must be filed within 90 days after the notice of deficiency is issued. There is no question but that the petition was not timely filed. It is well settled that to maintain an action in this Court there must be a valid notice of deficiency and a timely filed petition. See Pyo v. Commissioner,83 T.C. 626 632 (1984); Mollet v. Commissioner, 82 T.C. k618, 623 (1984), affd. without published opinion 757 F.2d 286 (11thCir. 1985); Keeton v. Commissioner, 74 T.C., 377, 379 (1980). A valid notice of deficiency has been issued if it is mailed to the taxpayer's last known address by certified or registered mail. Section 6212(a) and (b)(1).
As a general matter, respondent is entitled to treat the address appearing on the return for the year in question as the taxpayer's last known address absent "clear and concise notification" of a new address. Alta Sierra Vista, Inc. v. Commissioner, 62 t.C., 367, 374 (1974), affd. without published opinion 538 F.2d 334 (9th Cir. 1976). We have generally held that the filing of a subsequent return with a change of address does not constitute clear and convincing evidence of notice of a change of address. Weinroth v. Commissioner,74 T.C. 430, 436-437 (1980); Budlong v. Commissioner,58 T.C. 850, 852-853 (1972).
However, in McPartlin v. Commissioner,653 F.2d 1185 (7th Cir. 1981), the Seventh Circuit 3 held that "subsequently filed returns must be considered relevant when determining a taxpayer's last known address." Under the circumstances of that case, the Court found that the notice of deficiency was not sent to the taxpayer's last known address. 4
Petitioner in this case filed 1983 and 1984 returns showing her knew address. The returns were joint returns filed under the names of "Robert and Susan Taylor Schroeder," and showing here taxpayer identification number as the secondary (spouse's) number on the return and her husband's taxpayer identification number as the primary number. Petitioner's 1982 return had been filed under petitioner's sole name of Susan L. Taylor and showed her taxpayer identification number as the primary number on the return.
We note that on February 15, 1985, respondent sent correspondence to petitioner at her old address. This correspondence was returned to respondent marked "undeliverable" prior to the issuance of the notice of deficiency. Therefore, prior to the date respondent issued the notice of deficiency, he knew that petitioner no longer resided at the address to which the notice was sent. Where respondent knows that a taxpayer has moved, he has a duty to exercise reasonable diligence to ascertain the taxpayer's last known address. See Frieling v. Commissioner,81 T.C. 42, 49 (1983). Whether respondent has properly discharged this obligation is a question of fact. McPartlin V. Commissioner, supra.
We believe that respondent, in the exercise of diligence, and pursuant to McParlttin v. Commissioner, supra, should have conducted a computer search in an attempt to ascertain petitioner's new address. In this regard, respondent, in his response to the Court's December 7, 1987 order, states that he is unsure what action was taken after the return of the February 15, 1985 correspondence to locate a new address for petitioner. 5 In particular, respondent states that he is unsure of whether a computer search was conducted. Since respondent did not locate a new address for petitioner, it appears that either no computer search was conducted, or a computer search was improperly conducted such that it failed to turn up petitioner's new address.
Based on the circumstances of this case, and the record as a whole, we conclude that respondent failed to exercise reasonable diligence to ascertain petitioner's last known address. Accordingly, respondent's Motion to Dismiss for Lack of Jurisdiction will be denied. Furthermore, since no valid notice of deficiency was issued to petitioner's last known address, this matter will be dismissed for lack of jurisdiction.
An appropriate order will be entered.