- 11 - cause and good faith exception. United States v. Boyle, supra at 250-251; Weis v. Commissioner, 94 T.C. 473, 487 (1990). However, reliance on the advice of a professional tax adviser does not necessarily demonstrate reasonable cause and good faith. Sec. 1.6664-4(b)(1), Income Tax Regs. All facts and circumstances must be taken into account. Sec. 1.6664-4(c)(1), Income Tax Regs. The advice must be based upon all pertinent facts and the applicable law. Sec. 1.6664-4(c)(1)(i), Income Tax Regs. The advice must not be based on unreasonable factual or legal assumptions. Sec. 1.6664-4(c)(1)(ii), Income Tax Regs. The advice cannot be based on an assumption that the taxpayer knows, or has reason to know, is unlikely to be true. Id. At the close of the trial of this case, the Court instructed petitioners to address on brief the particular advice from Mr. Loeser on which they were relying to show reasonable cause and good faith with respect to each of the conceded items of underreported taxable income. In their briefs, petitioners address only the transaction involving the fictitious payments to Mr. Loeser or one of his affiliates and resulting in the erroneous credits to Mr. Oria’s drawing account. We assume, therefore, that they concede their reasonable cause and good faith defense with respect to the remaining conceded items of underreported taxable income. Mendes v. Commissioner, 121 T.C. 308, 312-313 (2003) (“If an argument is not pursued on brief, we may conclude that it has been abandoned.”).Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 NextLast modified: November 10, 2007