- 13 - to a “substantial understatement of income tax” is reduced to zero. Sec. 6662(d)(1)(A). Petitioners are not liable for the section 6662(a) penalty. Reviewed and adopted as the report of the Small Tax Case Division. Decision will be entered under Rule 155.Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14
Last modified: May 25, 2011