(3) Knows that such portion (if so used) would result in an understatement of the liability for tax of another person;
shall pay a penalty with respect to each such document in the amount determined in accordance with, and subject to the limitations contained in, § 6701 of the Internal Revenue Code ( 26 U.S.C. § 6701 ), or successor provisions. Except as provided in subsection (m) of this section, the penalty imposed by this subsection shall be in addition to any other penalty provided by law.