Extension of time for filing returns

The Secretary may grant a reasonable extension of time for filing any return, declaration, statement, or other document required by this title or by regulations. Except in the case of taxpayers who are abroad, no such extension shall be for more than 6 months.

An extension of 6 months for the filing of the return of income taxes imposed by subtitle A shall be allowed any corporation if, in such manner and at such time as the Secretary may by regulations prescribe, there is filed on behalf of such corporation the form prescribed by the Secretary, and if such corporation pays, on or before the date prescribed for payment of the tax, the amount properly estimated as its tax; but this extension may be terminated at any time by the Secretary by mailing to the taxpayer notice of such termination at least 10 days prior to the date for termination fixed in such notice. In the case of any return for a taxable year of a C corporation which ends on December 31 and begins before January 1, 2026 , the first sentence of this subsection shall be applied by substituting “5 months” for “6 months”. In the case of any return for a taxable year of a C corporation which ends on June 30 and begins before January 1, 2026 , the first sentence of this subsection shall be applied by substituting “7 months” for “6 months”.