Any person who is a tax return preparer with respect to any return or claim for refund who fails to comply with section
6107
(a) with respect to such return or claim shall pay a penalty of $50 for such failure, unless it is shown that such failure is due to reasonable cause and not due to willful neglect. The maximum penalty imposed under this subsection on any person with respect to documents filed during any calendar year shall not exceed $25,000.