In Kyick Holdings, LLC v. Commissioner, ___ F.4th ___ (1st Cir. 2026), CA1 here and GS here [to come], the Court held that
1. The IRS properly sent the notice to the taxpayer’s last known address. This is the less exciting holding, but I will address it below in my Comment #2.
2. Section 6213(a)’s timely filing requirements are not jurisdictional. (Caution on this label “jurisdictional” though, as I note below.)
3. As a matter of statutory interpretation § 6213(a)’s timely filing requirements are “mandatory,” meaning that the periods to file the petition is not subject to equitable tolling. This latter holding has the same practical effect as would have applied if the Court had agreed with the consensus holdings in the Courts of Appeals that § 6213(a)’s time periods were jurisdictional.
The key holdings for purposes of this blog are ## 2 & 3, although they are not outcome-determinative in terms of the holdings of other Circuit Courts of Appeals. That is because regardless of whether a Court bases its outcome on jurisdiction or a mandatory analysis, the result is the same in denying the availability of equitable tolling.
For that reason, I worry whether courts futzing around with “jurisdiction” in this context is meaningful. Courts could just go to the heart of the disposition that the time periods are mandatory. In many cases, courts are just writing at length about jurisdiction which has some esoterica when mandatory should do.
Added 8/20/26 3:25pm: For a different outcome see Maniktala v. Commissioner, ___ F.4th ___ (8th Cir. 8/11/26), CA8 here and GS here, allowing equitable estoppel for time deadlines in § 6213(a) based on holdings that (i) § 6213(a) is nonjurisdictional (consistent with Kyick) but (ii) the § 6213(a) deadlines are not mandatory (inconsistent with Kyick). It appears that there is a clear conflict in the Circuits on the statutory interpretation issue which is often a substantial basis for granting a petition for writ of certorari. I should note that, in effect, Maniktala seems to be based on the Eighth Circuit's application of the default rule allowing equitable estoppel in a case where the court cannot determine the statutory meaning (in interpretive equipoise), whereas Kyick is based on an interpretation of the statute where it could it could determine the statutory meaning. Although an agency interpretation that might have qualified for Chevron deference (i.e., a Treasury interpretive regulation) is not in issue, this split does highlight one of the central fanciful notions of Loper Bright that courts can always interpret statutes to reach the best interpretation without the need for default rules for decision.
Other JAT Comments: