§ 6719. Failure to register or reregister
(a)
Failure to register or reregister
Every person who is required to register or reregister under section
4101 and fails to do so shall pay a penalty in addition to the tax (if any).
(c)
Reasonable cause exception
No penalty shall be imposed under this section with respect to any failure if it is shown that such failure is due to reasonable cause.