The new deadline for C corporation returns has been moved from March 15th to April 15th with an optional five month extension, however, C corporations with a June 30 year-end will not be affected until 2025 and qualify for a seven month extension. Other year-ends qualify for a six month extension. S corporation returns continue to be due March 15th.
Calendar year partnership returns will now be due March 15th instead of April 15th and fiscal year partnership returns will be due the 15th day of the third month following the close of the fiscal year with a maximum six month extension.