The fallout from taxpayer challenges to the Internal Revenue Service’s (IRS) “reportable transaction” regime continues. On March 21, 2022, the district court in CIC Servs., LLC v. IRS ruled in favor of the taxpayer, vacating Notice 2016-66 and ordering the IRS to return all documents and information produced pursuant to Notice 2016-66 to taxpayers and material advisors.

We previously posted about the Supreme Court of the United States’ decision in CIC Servs., LLC v. IRS, which allowed a pre-enforcement challenge to the IRS’s reportable transaction regime. On remand, the parties filed cross-motions for summary judgment. The district court, relying on Mann Construction, Inc. v. United States, explained that the “Sixth Circuit’s analysis in Mann Construction is binding on this Court and applies equally to the arguments advanced by the IRS regarding Notice 2016-66 in this case.” The court dealt the IRS another blow, holding that Notice 2016-66 had to also be set aside as an agency action that was arbitrary and capricious: “[s]imply including cases in the administrative record that suggest certain tax structures could be abusively employed is not synonymous with examining relevant facts and data in connection with issuing the Notice.” In determining the appropriate relief, the court rejected the IRS’s request to limit vacatur of the Notice to CIC, explaining that “vacating the Notice in its entirety is appropriate” and citing the US Court of Appeals for the Sixth Circuit’s prior statement that the IRS “do[es] not have a great history of complying with APA procedures, having claimed for several decades that their rules and regulations are exempt from those requirements” (See CIC Servs., LLC v. IRS, 925 F.3d 247, 258 (6th Cir. 2019) quoting Kristin E. Hickman & Gerald Kersa, Restoring the Lost Anti-Injunction Act, 103 Va. L. Rev. 1683, 1712-13 (2017)).

Practice Point: The assault on the IRS’s reportable transaction regime is far from over. We recently posted about the Sixth Circuit’s opinion in Mann Construction in which it held that Notice 2007-83, which required disclosure of listed transactions relating to certain employee benefit plans, violated the Administrative Procedure Act (APA). APA challenges continue to expand to other IRS notices that bypassed the notice-and-comment requirement, including Notice 2017-10, which identifies certain syndicated conservation easement transactions as listed transactions subject to disclosure to the IRS. These developments will certainly have a significant impact on taxpayers and material advisors’ responsibilities as we move into the tax filing season.