D.C. Circuit Reverses Tax Court Decision in a Reported Whistleblower Award Case
The U.S. Court of Appeals for the D.C. Circuit (In re: Sealed Case, CA DC, Case No. 24-1001, September 24, 2025) recently vacated a Tax Court decision (Whistleblower 8391-18W v. Commissioner, 165 TC No. 5, October 16, 2023) in a significant whistleblower award case, providing insights for practitioners representing clients before the IRS Whistleblower Office (WBO). The appellate court’s opinion hinges on the factual support within the administrative record required for a WBO determination, particularly when the WBO treats a whistleblower’s claims inconsistently across different taxpayers involved in the same scheme. This article will detail the case’s journey from the Tax Court to the D.C. Circuit, focusing on the facts, the legal analysis, and the key differences in judicial interpretation that led to the appellate court’s reversal.
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