The Perpetual Burden of Carryover Substantiation: Lessons on AMT Credits and Recordkeeping from Beacom v. Commissioner
Gerald A. Beacom and Jean A. Beacom v. Commissioner of Internal Revenue, T.C. Memo. 2026-65, (Aug. 11, 2026)
For tax professionals, advising clients on credit carryforwards and other carryover tax items is a routine task. However, a taxpayer’s failure to maintain the records necessary to substantiate the origin of these carryovers can lead to disastrous audit outcomes. The recent Tax Court memorandum decision in Gerald A. Beacom and Jean A. Beacom v. Commissioner provides a stark reminder of the perpetual nature of the taxpayer’s recordkeeping burden, the severe limitations of retail tax software as a defense, and a widespread, critical misunderstanding of IRS record retention guidelines.
In this case, the court addressed a taxpayer’s attempt to use Alternative Minimum Tax (AMT) credit carryforwards that allegedly originated more than two decades prior to the tax year in question. The decision highlights that the standard statute-of-limitations lookback period does not shield carryover items from audit and that casualty losses (such as fires or floods) do not relieve taxpayers of their absolute duty to substantiate.
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