- 13 - and remanded on other grounds 259 F.2d 300 (5th Cir. 1958); Vaughan v. Commissioner, 15 B.T.A. 596 (1929). Petitioners have failed to meet either of these burdens. We sustain respondent’s determination on this issue. 2. Service Income/Self-Employment Tax Respondent determined that petitioners failed to report $10,000 of personal service income for 1986. Respondent also determined that this amount was subject to self-employment tax. A self-employment tax is imposed on income in excess of $400 derived by an individual from a trade or business. Secs. 1401, 1402(b) and (c). Petitioners presented no evidence on these issues, and the record does not otherwise disprove respondent’s determination on the issues. We sustain respondent's determination. 3. Substantial Understatements--Section 6661 Section 6661 imposes an addition to tax for substantial understatements. The amount of the section 6661 addition to tax for additions assessed after October 21, 1986, equals 25 percent of the amount attributable to the substantial understatement. Pallottini v. Commissioner, 90 T.C. 498, 500-503 (1988). An understatement is substantial if it exceeds the greater of 10 percent of the tax required to be shown on the return or $5,000. Sec. 6661(b)(1)(A). An understatement is reduced to the extent it is: (1) Based on substantial authority, or (2)Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Next
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