- 76 - amount of the marital deduction, the parties must consider (and not reduce the marital deduction by) the amount of State transfer and inheritance taxes actually and timely paid by reason of the bequest of the class A voting stock to the trustees of the credit shelter trust. Issue 4. Penalties The last issue is whether petitioner is liable for the penalties determined by respondent pursuant to section 6662(a), (g), (h)(1), and (2)(C). A substantial estate tax valuation understatement occurs if the value of property claimed on a return is 50 percent or less of the amount determined to be its correct value, and the portion of the underpayment attributable to the understatement exceeds $5,000. See sec. 6662(g). The penalty equals 20 percent of the portion of the underpayment attributable to the understatement. See sec. 6662(a). The penalty does not apply to any portion of the underpayment for which the taxpayer shows that he or she: (1) Had reasonable cause, and (2) acted in good faith with respect thereto. See sec. 6664(c); see also United States v. Boyle, 469 U.S. 241, 242 (1985). Whether a taxpayer had reasonable cause and acted with good faith is a factual determination. See sec. 1.6664-4(b), Income Tax Regs. Reliance on the advice of a professional will constitute good faith and reasonable cause where the reliance was reasonable. See id. Respondent argues that petitioner undervalued decedent's shares of J.R. Simplot Co. Respondent further contends thatPage: Previous 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 Next
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