- 7 - Boser v. Commissioner, 77 T.C. 1124, 1132 (1981). In this regard, a taxpayer must keep sufficient records to establish the amount of the deductions or other matters required to be shown on the taxpayer's return. See sec. 1.6001-1(a), Income Tax Regs. In the event taxpayers establish that they have incurred trade or business expenses, but are unable to substantiate the precise amount of the expenses, we may estimate the amount of the deductible expenses. Cohan v. Commissioner, 39 F.2d 540, 543-544 (2d Cir. 1930). However, we cannot estimate deductible expenses unless the taxpayer presents evidence adequate to provide some rational basis upon which estimates may be made. Vanicek v. Commissioner, 85 T.C. 731, 743 (1985). A. Interest Expense Deduction Petitioner claimed an interest expense deduction in the amount of $36,051 on Schedule C of his 1991 Federal income tax return. Respondent disallowed the claimed deduction in its entirety. At trial, petitioner stated that the deduction is composed of payments made by petitioner to a corporation and an individual, respectively, in 1991: Nuuanu Streamside, Inc., and Steven Hirahara. Petitioner provided documentation in the form of two checks he issued to these payees. On September 30, 1991, petitioner paid $185,000 through business check No. 1926 to an entity denominated Nuuanu Streamside, Inc. The check was from "Les Hirahara - Realtor". The memo portion of this check states that it is for the paymentPage: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Next
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