26 U.S.C. § 6685: Assessable penalty with respect to public inspection requirements for certain tax-exempt organizations

In addition to the penalty imposed by section 7207 (relating to fraudulent returns, statements, or other documents), any person who is required to comply with the requirements of subsection (d) of section 6104 and who fails to so comply with respect to any return or application, if such failure is willful, shall pay a penalty of $5,000 with respect to each such return or application.