- 6 - petitioner’s records were lost through circumstances beyond her control. Where a taxpayer establishes that he incurred a business expense but cannot prove the amount of the expense, the Court may approximate the amount allowable, bearing heavily against the taxpayer whose inexactitude is of his own making. Cohan v. Commissioner, 39 F.2d 540, 544 (2d Cir. 1930). To apply the Cohan rule, however, we must have a reasonable basis for estimating the amount of the expense. Vanicek v. Commissioner, 85 T.C. 731, 742-743 (1985). We are not required to accept a taxpayer’s unsubstantiated testimony that he is entitled to a deduction. See Tokarski v. Commissioner, 87 T.C. 74, 77 (1986); Hoang v. Commissioner, T.C. Memo. 2006-47. A. Advertising Petitioner claimed a $1,200 deduction for advertising which respondent disallowed in full. Petitioner testified that she incurred this expense in connection with two Internet Web sites she maintained and brochures she distributed to potential customers, but she provided no credible evidence to corroborate the amount or purpose of the expense. See Tokarski v. Commissioner, supra. Respondent’s determination on this issue therefore is sustained.Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 NextLast modified: November 10, 2007