In my Federal Tax Procedure book, I note that there may be some procedural foot-fault in the IRS issuance of a notice of deficiency (“NOD”), such as failure to send to the last known address. If the NOD is invalid, any resulting assessment is invalid. I note that a traditional way to challenge the NOD for failure to send to the last known address is by filing an out-of-time petition for redetermination with the Tax Court. If the Tax Court then dismisses for lack of jurisdiction of an untimely petition it may base the decision on the invalidity of the NOD which invalidates the assessment requiring a valid NOD; that will invalidate the assessment. I caution that this gambit might be a pyrrhic victory if the IRS can still issue a new deficiency for which the statute of limitations is still open when the Tax Court dismisses. (See the Federal Tax Procedure book 2023.2 Practitioner Edition pp. 515-516.)
Phillips v. Commissioner, T.C. Memo 2024-44, TA here & GS here [to come], is such a case. In Phillips which the Court says is a deficiency case (see p. 1; for more explanation see my note # 1 below explaining how a CDP case morphed into a separate deficiency case), the petition for redetermination of the deficiency was out of time. The Court found the NOD and resulting assessment to have been invalid for failing the last known address requirement. In getting to the holding of invalidity, the Court offers good discussion of the application of the Regulations on last known address including the IRS access to USPS change of address information as a licensee, the IRS’s processes for insuring last known address, and the IRS’s failure to meet the Regulations’ requirements in this case. I will not further address the merits of the Tax Court’s last known address resolution.
I focus instead on the Phillips opinion’s closing shot (p. 15 n. 10):
Nothing in this Opinion should be construed as limiting respondent’s ability to issue petitioner a new notice of deficiency for 2014 that is properly mailed to petitioner’s last known address.