- 77 - V. Additions to Tax and Penalties A. Whether Petitioner Is Liable for Fraud Penalties Under Section 6663(a) 1. Background Section 6663(a) imposes a penalty of “an amount equal to 75 percent of the portion of the underpayment which is attributable to fraud.” Section 6663(b) specifies that if any portion of the underpayment is attributable to fraud, the entire underpayment shall be treated as attributable thereto except to the extent the taxpayer establishes, by a preponderance of the evidence, that some part is not due to fraud. Where taxpayers file a joint return, section 6663 does not apply to a spouse unless some part of the underpayment is due to the fraud of the spouse. Sec. 6663(c). When asserting liability under the fraud penalty, the Commissioner has the burden of proving, by clear and convincing evidence, that (1) the taxpayer underpaid his income taxes for each year, and (2) that some portion of the underpayment is due to fraud. Sec. 7454(a); Rule 142(b); King’s Court Mobile Home Park, Inc. v. Commissioner, 98 T.C. 511, 515-516 (1992); Truesdell v. Commissioner, 89 T.C. 1280, 1301 (1987). The existence of fraud is a question of fact to be resolved from the entire record. DiLeo v. Commissioner, 96 T.C. 858, 874 (1991), affd. 959 F.2d 16 (2d Cir. 1992); Gajewski v. Commissioner, 67 T.C. 181, 199 (1976), affd. without publishedPage: Previous 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 NextLast modified: March 27, 2008