- 63 - Sec. 6661(a); Pallottini v. Commissioner, 90 T.C. 498, 500-503 (1988). A substantial understatement of income tax is defined as an understatement of tax that exceeds the greater of 10 percent of the tax required to be shown on the return for the year or $5,000, whichever is greater. Sec. 6661(b)(1)(A). An understatement is the amount required to be shown on the return less the amount actually shown on the return. Sec. 6661(b)(2)(A). The Commissioner may waive the addition to tax if the taxpayer had reasonable cause for the understatement and acted in good faith. Sec. 6661(c). Petitioners bear the burden of proving that respondent's imposition of additions to tax under section 6661 is erroneous. Rule 142(a); Tweeddale v. Commissioner, 92 T.C. 501, 506 (1989). Petitioners did not present any evidence at trial which would prove that the Takaos had reasonable cause for the understatement or that they acted in good faith in omitting the income from their 1988 return. Accordingly, we sustain respondent's determination as to the addition to tax under section 6661 for 1988. Toraya Office Expenses Deduction In the notice of deficiency for 1988 and 1989, respondent determined that Toraya was not entitled to deduct $9,733 and $12,000, respectively, for "Office Expenses" claimed on Toraya's returns for those years. In a stipulation of settled issues,Page: Previous 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 Next
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