Calendar-Year Corporate returns and Partnership returns (Federal Forms 1120, 1120S, and 1065) are due September 15^th! This deadline is the absolute and final deadline to file returns for both corporations and partnerships, as no additional extensions are available. Late returns will be subject to the following penalties:

C-Corp (Form 1120) - Minimum penalty for late filing if a return is more than 60 days late is lesser of $135 or 100% of the…