A pipe-yard welder moves from Farmington to Las Cruces in the spring of 2026, after filing his 2025 return from the old San Juan County address. In November an IRS balance-due letter finds him in Doña Ana County, referring to a notice of deficiency mailed in July. His 90 days to challenge it in the U.S. Tax Court are gone.
Can missed Tax Court deadlines be excused? September made it look possible: the Tax Court let a partnership’s late petition in, and the Senate passed a tolling bill. For New Mexico individuals, the 90 days remain a wall that goes up at 9:59 p.m. Mountain time.
Does the Tax Court 90-day deadline still bar a late petition from New Mexico?
Yes, for now. Under 26 U.S.C. § 7482(b)(1)(A), an individual’s appeal goes to the circuit where the taxpayer legally resides, which for New Mexico is the Tenth Circuit. Under Golsen v. Commissioner, 54 T.C. 742 (1970), aff’d, 445 F.2d 985 (10th Cir. 1971), the Tax Court applies that circuit’s on-point precedent and otherwise uses its own.
Its own precedent has not moved. Hallmark Research Collective v. Commissioner, 159 T.C. 126 (2022), dismissed a petition that came in one day late, holding the deadline in 26 U.S.C. § 6213(a) jurisdictional and beyond equitable tolling despite Boechler, P.C. v. Commissioner, 596 U.S. 199 (2022), which made the 30-day collection due process deadline tollable. The reviewed opinion in Sanders v. Commissioner, 161 T.C. 112 (2023), reaffirmed it. The Tenth Circuit’s older cases agree, including Foster v. Commissioner, 445 F.2d 799 (10th Cir. 1971). My search turned up no Tenth Circuit ruling on the point since Boechler.
Other circuits split three ways. The Second, Third, Sixth and Eighth call the deadline nonjurisdictional and tollable (Buller, 2d Cir. 2025; Culp, 75 F.4th 196 (3d Cir. 2023); Oquendo, 6th Cir. 2025; Maniktala, 8th Cir. Aug. 11, 2026). The First Circuit, in Kyick Holdings (Aug. 17, 2026), found it nonjurisdictional but mandatory, so no tolling. The Seventh and Ninth still say jurisdictional. The Supreme Court turned down the government’s Culp petition in June 2024, and its docket showed nothing pending on October 9, 2026. Only an appeal could retire Foster.
Why did a partnership get equitable tolling in Tax Court when individuals cannot?
Partnerships covered by the Bipartisan Budget Act audit rules get 90 days after a final partnership adjustment is mailed, under 26 U.S.C. § 6234(a). Big Apple Tompkins Realty LLC v. Commissioner, 167 T.C. No. 7 (Aug. 5, 2026), read that subsection as permission to file rather than a restriction on the court’s authority. Kings Road Property, LLC v. Commissioner, 167 T.C. No. 11 (Sept. 21, 2026), then accepted a petition 16 days late.
Same court, same 90 days, opposite results, and history explains why. Hallmark leaned on the prior-construction canon: the deficiency deadline has been called jurisdictional since 1924, and Congress kept reenacting the words without disturbing that reading. A 2015 regime has no such record.
Its facts still matter. Both certified-mail packages came back from a correct address, and an IRS employee told counsel no notice had gone out. The court declined to say returned mail alone would do, and in Kyick a returned notice earned nothing. A New Mexico partnership’s appeal lies in the Tenth Circuit (§ 7482(b)(1)(E)), so Kings Road governs unless that circuit says otherwise.
Missed a Tax Court Deadline? Contact Us Now
What time is the Tax Court filing deadline in New Mexico?
For an electronic filing, 9:59 p.m. Mountain time. Under Tax Court Rule 22(d), an e-filed petition is timely only if filed “at or before 11:59 p.m., eastern time” on the last day. New Mexico and the East Coast both observe daylight saving time, so the gap is two hours all year. A petition reaching DAWSON, the court’s filing system, at 10:00 p.m. in Gallup arrives on the next day in Washington.
In Nutt v. Commissioner, 160 T.C. 470 (2023), an Alabama couple filed at 11:05 p.m. Central, 12:05 a.m. Eastern, and lost. In a different Sanders v. Commissioner, 160 T.C. No. 16 (2023), an upload 11 seconds past midnight Eastern was late. A real DAWSON outage on the due date extends the deadline under 26 U.S.C. § 7451(b); trouble with your own laptop does not. Without tolling, one minute late is as fatal as one year.
How is the 90-day period counted on a New Mexico notice of deficiency?
The clock starts at mailing, not arrival. Section 6213(a) allows 90 days, or 150 when the notice is addressed to a person outside the country. A last day that lands on a Saturday, Sunday or D.C. legal holiday moves to the next business day (see 26 U.S.C. § 7503); a New Mexico state holiday does not count. A petition filed by the date printed on the notice is timely even if that date is wrong.
For a last-day filer in Hobbs or Raton, paper has one edge: Eastern time plays no part. Under 26 U.S.C. § 7502(a), a timely Postal Service postmark counts as the filing date. Private carriers qualify only for the DHL, FedEx and UPS services on the IRS’s designated list (Notice 2016-30).
Does a notice of deficiency count if it went to my old New Mexico address?
Usually. Under 26 U.S.C. § 6212(b)(1), a notice sent to the taxpayer’s last known address is enough, received or not. Treas. Reg. § 301.6212-2 makes that the address on your latest properly processed return, absent “clear and concise notification” of another; Postal Service change-of-address data can also update it. A move reported to “another government agency” does not count, so telling the New Mexico Taxation and Revenue Department or the MVD changes nothing at the IRS. Form 8822 does.
In Armstrong v. Commissioner, 15 F.3d 970 (10th Cir. 1994), a notice returned “unclaimed” from a Tulsa post office box was valid because diligence is judged at mailing. That rule is why the returned packages in Kings Road did not void the notice, leaving tolling as the only way in.
How does the deadline play out for a Las Cruces taxpayer?
Illustration only: the IRS mails and dates the welder’s 2024 notice on Monday, July 27, 2026, to the Farmington address on his 2025 return. Day 90 is Sunday, October 25, so his last day is Monday, October 26. An e-filed petition must reach DAWSON by 9:59 p.m.; a mailed one needs a postmark no later than October 26.
He learns of it on Friday, November 20, 116 days after mailing. Farmington was his last known address, so the notice is valid and a petition now would be dismissed under Hallmark. In Ohio or Missouri he could at least argue tolling. Had he filed Form 8822 in May, the Farmington mailing itself would be open to attack.
What can a New Mexico taxpayer do after missing the Tax Court deadline?
Each remaining route costs more. Audit reconsideration asks the IRS to reopen the exam; IRM 4.13.1 lists a move and missed mail as reasons and allows it after a jurisdictional dismissal, given new information. Before levying, the IRS must offer a collection due process hearing with its Independent Office of Appeals, and 26 U.S.C. § 6330(c)(2)(B) lets someone who never received the notice dispute the tax itself. A doubt-as-to-liability compromise offer, governed by Treas. Reg. § 301.7122-1(b)(1), remains open where no court has decided the amount.
A refund suit requires full payment first under Flora v. United States, 362 U.S. 145 (1960), which arose in the Tenth Circuit. Then comes a claim within the § 6511(a) window, a six-month wait or denial under § 6532(a)(1), and suit in the District of New Mexico or the Court of Federal Claims. The firm’s post on Tax Court versus a refund suit or bankruptcy court compares them.
On September 30, 2026, the Senate passed H.R. 5349 as amended, the Taxpayer Assistance and Service Act; its section 307 would make the § 6213(a) deadline tollable in cases pending on or after enactment. The House must act again.
| Deadline | Rule for a New Mexico filer | Can lateness be excused? | Key authority |
|---|---|---|---|
| Individual deficiency petition, § 6213(a) | 90 days (150 if addressed abroad), jurisdictional | No tolling in Tax Court | Hallmark; Foster |
| BBA partnership petition, § 6234(a) | 90 days, not jurisdictional | Yes, on diligence and extraordinary circumstances | Big Apple; Kings Road |
| Collection due process petition, § 6330(d)(1) | 30 days, not jurisdictional | Tolling available | Boechler |
| E-filed petition, last day | 9:59 p.m. Mountain (11:59 p.m. Eastern) | Only if DAWSON was down | Rule 22(d); § 7451(b); Nutt |
| Mailed petition | USPS postmark on or before the last day | Treated as filed when mailed | § 7502; Notice 2016-30 |
Frequently Asked Questions
Does the Tax Court treat the 90-day deadline as jurisdictional for New Mexico residents?
Yes, in that court. It applies Hallmark because the Tenth Circuit has yet to rule since Boechler, and its older decisions agree, so the reason for the delay is never reached.
Does the Kings Road decision help an individual who filed late?
Not directly. It covers partnership petitions under the BBA rules, and the individual deadline carries a far longer history.
What time must a New Mexico taxpayer e-file a Tax Court petition?
By 9:59 p.m. Mountain time on the last day. Rule 22(d) uses 11:59 p.m. Eastern, and the court has dismissed a petition that arrived 11 seconds late.
Does a notice of deficiency count if it never reached me?
Generally yes, if the IRS used your last known address. Not receiving it matters mainly in a collection due process hearing, where it may let you dispute the tax itself.
Will the Senate-passed bill rescue a petition already dismissed as late?
Probably not. The Senate version reaches cases pending on or after enactment and disclaims any inference for cases the Tax Court finally decided before then. It is not law until the House agrees and the President signs.
How North Star Law Firm Can Help
North Star Law Firm handles Tax Court litigation for New Mexico taxpayers and represents taxpayers in Appeals and collection due process hearings after the Tax Court door closes. Where the assessment is wrong, it also weighs offers in compromise.
Phillip Zagotti, JD/CPA, represents taxpayers before the IRS and the U.S. Tax Court and is admitted to the U.S. District Court and Bankruptcy Court for the District of New Mexico. The firm works alongside New Mexico-licensed counsel on state-law questions. If an IRS deficiency notice is on your counter, contact North Star Law Firm.