Background
The IRS assessed Richard S. Ohendalski for income-tax deficiencies, late-filing penalties, and civil-fraud penalties for tax years 2002 through 2004. Ohendalski petitioned the Tax Court for redetermination, but the parties settled, and the Tax Court entered a decision finding him liable. The Fifth Circuit affirmed that decision in 2015.
The IRS later sued to collect the liabilities. It recovered most of the balance through a 2023 jeopardy levy, and Ohendalski paid the remainder that December. In 2025, he brought a refund action under 26 U.S.C. § 7422(a), asserting that amounts previously treated as taxable income were not taxable. The district court adopted a magistrate judge’s recommendation and dismissed the suit with prejudice on res judicata grounds.
The Court’s Holding
The Fifth Circuit affirmed. It held that the Tax Court’s decision entered pursuant to the parties’ settlement was a final judgment on the merits for claim-preclusion purposes. The fact that the settlement did not adjudicate every issue later raised in the refund suit did not deprive the agreed judgment of preclusive effect.
The court also held that the Tax Court proceeding and the refund suit involved the same claim because both arose from the same nucleus of operative facts: Ohendalski’s tax liability for 2002, 2003, and 2004. Although a refund action became available only after payment and an administrative refund claim, that different statutory remedy did not create a new claim. Under the transactional test, differing legal theories, requested relief, or asserted rights do not avoid claim preclusion, and liability for a particular tax in a particular year constitutes a single cause of action.
Key Takeaways
- An agreed Tax Court judgment is a final judgment on the merits for purposes of claim preclusion.
- A later refund suit concerns the same claim when it challenges the same taxpayer’s liability for the same taxes and tax years.
- The later availability of a statutory refund remedy does not defeat claim preclusion when both actions arise from the same operative facts.
Why It Matters
The decision underscores that taxpayers generally cannot settle litigation over tax liability and later relitigate that same liability through a refund action after paying the assessment. Courts applying the transactional test focus on the underlying tax liability, not on differences in procedural vehicle, legal theory, or requested relief.