- 14 - transaction, item, or event affecting the same taxpayer or a sufficiently related taxpayer. Estate of Mueller v. Commissioner, 101 T.C. 551, 552 (1993) (Mueller II);10 see also United States v. Dalm, supra at 605-606 n.5; Bull v. United States, supra. Equitable recoupment operates as a defense that may be asserted by a taxpayer to reduce the Commissioner’s timely claim of a deficiency, or by the Commissioner to reduce the taxpayer’s timely claim for a refund. O’Brien v. United States, 766 F.2d 1038, 1049 (7th Cir. 1985); Estate of Mueller v. Commissioner, supra at 552; Estate of Orenstein v. Commissioner, T.C. Memo. 2000-150. When applied for the benefit of a taxpayer, the equitable recoupment doctrine allows a taxpayer to recoup the amount of a time-barred tax overpayment by allowing the overpayment to be applied as an offset against a deficiency if certain requirements are met. Bull v. United States, supra at 259-263; Crop Associates-1986 v. Commissioner, 113 T.C. 198, 200 (1999). 10In Estate of Mueller v. Commissioner, T.C. Memo. 1992-284, we redetermined the increased value of certain shares of stock included in the decedent’s gross estate. In Estate of Mueller v. Commissioner, 101 T.C. 551 (1993), we denied the Commissioner’s motion to dismiss for lack of jurisdiction in respect of the taxpayer’s partial affirmative defense of equitable recoupment. In Estate of Mueller v. Commissioner, 107 T.C. 189 (1996), affd. on other grounds 153 F.3d 302 (6th Cir. 1998), we rejected the taxpayer’s equitable recoupment claim on the ground that equitable recoupment is restricted to use as a defense against an otherwise valid claim for a deficiency and the doctrine may not be used to increase the amount of a tax overpayment where it is determined that no deficiency exists.Page: Previous 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 NextLast modified: March 27, 2008