Kyick: The Tax Court Deadline Was Nonjurisdictional but Still Barred Tolling

A taxpayer won the argument about the Tax Court’s jurisdiction but still lost its late petition. In Kyick Holdings, LLC v. Commissioner of Internal Revenue Service, No. 25-1429 (1st Cir. Aug. 17, 2026), the First Circuit held that the filing deadline in Internal Revenue Code section 6213(a) was nonjurisdictional. It separately held that the deadline was mandatory and unavailable for equitable tolling. The court affirmed dismissal on different grounds from the Tax Court.

The opinion also resolved a concrete notice problem: The IRS mailed a transferee-liability notice to the address on Kyick’s most recent return, but the notice was returned undelivered. Kyick received a copy months later. The court’s address analysis, its treatment of undeveloped arguments and its separate deadline rulings explain why eventual receipt did not produce a remand.

Two related companies had different address records and filing results

After investigating transfers of business assets, the IRS determined transferee liability for $696,269.77 in unpaid income tax, plus interest. On August 30, 2022, it mailed separate notices to Kyick Holdings and the related Kyick Charters. These were distinct entities with distinct recent tax filings.

The notice to Kyick Charters went to the post-office box on its most recent filing. That company received its notice and filed a timely Tax Court petition. The notice to Kyick Holdings went to the street address on its 2021 federal return. The Postal Service returned that notice as unclaimed and unable to forward. Counsel eventually obtained a copy on January 9, 2023, and Holdings petitioned on January 20—143 days after mailing.

Holdings challenged the notice’s validity and argued that the IRS knew of a different address through its investigation. It also cited Culp v. Commissioner, 75 F.4th 196 (3d Cir. 2023), in a footnote supporting jurisdiction. The Tax Court dismissed because the petition was outside the 90-day period and it considered that period jurisdictional. It also found the notice properly addressed.

The most recent processed return mattered more than older investigation documents

Sections 6212(b) and 6901(g) address notices sent to the taxpayer’s last known address. The address regulation generally uses the most recently filed and properly processed federal return unless the IRS receives clear and concise notice of a different address, subject to its specified Postal Service update rules. That postal route requires a match between the taxpayer’s name and prior address in IRS records and the Postal Service’s change-of-address database, followed by timely IRS processing and posting. Address information supplied to other third parties is not direct notification to the IRS.

Holdings did not dispute that the street address appeared on its latest return. Before mailing, the IRS checked its internal address database. Other addresses in the investigation came from documents predating that return. The court concluded that those older materials did not constitute clear and concise notification directing the IRS to use another address for Holdings.

The court also examined reasonable diligence. It questioned whether it needed to adopt the older, out-of-circuit diligence test after promulgation of the address regulation. Assuming the test applied in Holdings’ favor, it found that the IRS satisfied it anyway. That was an actual assumption supporting an alternative analysis, rather than a decision adopting the test for every future case.

The distinction between the entities remained important. Knowledge of addresses associated with related businesses did not require duplicate notices to every address in the investigation on this record. The court upheld the mailing even though Holdings did not actually receive the original letter.

Forfeiture was different from intentionally abandoning an argument

The IRS argued that Holdings had waived the jurisdiction and tolling issues. The First Circuit distinguished intentional relinquishment from failure to develop an argument. Holdings’ disclaimer of a substantive liability challenge did not abandon its separate challenge to the notice, and its citation to Culp showed reliance on that decision.

Still, the court found both arguments forfeited because they were insufficiently developed below. It applied the circuit’s demanding plain-error standard for forfeited civil arguments. The changing and divided law prevented Holdings from showing that the Tax Court’s jurisdictional treatment was clearly or obviously wrong. The court’s separate rejection of equitable tolling also defeated the necessary error and prejudice showing on that branch.

The court nevertheless explained the underlying legal questions. That discussion produced two different answers: Congress had not clearly made the deadline jurisdictional, but the statutory scheme foreclosed equitable tolling in the First Circuit’s analysis.

The statute lacked the clear statement required for a jurisdictional deadline

The first sentence of section 6213(a) tells taxpayers when they may petition. Its fourth sentence expressly restricts the Tax Court’s authority to grant certain injunctions and refunds without a timely petition. The court treated that difference as significant: Congress used explicit jurisdictional language for particular remedies without similarly making the petition deadline a limit on the court’s adjudicatory power.

The reasoning drew on Boechler, P.C. v. Commissioner, 596 U.S. 199 (2022), which addressed the separate 30-day Collection Due Process deadline in section 6330(d)(1). The First Circuit also explained why intervening Supreme Court decisions justified departing from its own older summary characterization of section 6213(a) as jurisdictional.

The IRS pointed to the deadline’s links to assessment, collection and refund provisions. The court acknowledged those consequences but held that they did not supply the required clear statement. It also expressly left a disputed interpretation of section 7459(d), concerning consequences of dismissal and a possible later refund action, unresolved because deciding it was unnecessary to resolve this appeal.

Nonjurisdictional treatment did not answer the separate tolling question

A nonjurisdictional limitation period ordinarily carries a presumption favoring equitable tolling. The First Circuit found that presumption rebutted here. It relied on the statutory text, history and wider tax scheme, including the Supreme Court’s analysis in Enbridge Energy, LP v. Nessel, 146 S. Ct. 1074, 1081–1085 (2026).

Section 6213(a) itself specifies a longer period for a notice addressed abroad, adjusts a last day falling on a weekend or District of Columbia holiday, and protects a petition filed by the last date stated in the notice. The court also examined specific statutory adjustments involving bankruptcy, inaccessible filing locations, military service, disasters and timely mailing. It viewed those detailed provisions as evidence that Congress had supplied the permitted adjustments rather than authorized open-ended equitable ones.

On that basis, the court rejected the requested tolling remand and affirmed dismissal. It expressly acknowledged disagreement with the Second, Third and Sixth Circuits’ tolling conclusions while agreeing with them that the deadline was nonjurisdictional. Its reasoning therefore requires keeping jurisdiction, legal availability of tolling and a particular taxpayer’s excuse separate. The opinion also identified unpublished Ninth and Eleventh Circuit decisions treating the deadline as jurisdictional. Those decisions further explain why the First Circuit’s analysis should not be treated as a nationwide rule.

Use the decision at the level of the actual notice and governing court

Kyick is a published First Circuit decision. A California dispute requires identifying the controlling Supreme Court and Ninth Circuit law, the exact statutory route and any later legal development. The August decision supplies a defined appellate analysis rather than a uniform national extension rule.

As checked October 27, Congress.gov lists H.R. 5349 as passed by the Senate, with further enactment steps incomplete. Proposed legislation is not a substitute for the filing law governing an existing notice. The current official section 6213 text retains its deadline language.

Our entity-specific IRS business-address guide focuses on identifying the correct taxpayer, its latest processed return and evidence of address updates. The tax team can review those records alongside the notice and filing history, separating notice validity from the underlying tax and any legally available late-filing argument.