Any return required by subsection (a) shall be in such form and set forth such information as the Secretary shall by regulations prescribe.
Any return required by subsection (a) shall be filed on or before the 90th day (or on or before such later day as the Secretary may by regulations prescribe) after the day on which the United States person becomes liable to file such return.
For provisions relating to penalties for violations of this section, see sections 6679 and 7203.