Filing required returns on time can help your LLC avoid fines and penalties. C corporations must file Form 1120, U.S. Corporation Income Tax Return annually.

C-Corporations must file IRS Form 1120 by the fifteenth day of the third month following the end of the corporate tax year. To receive an automatic six month extension of time to file Form 1120 ...

S corporations are typically considered pass-through entities (as long as no exceptions apply) and must file the information return Form 1120-S, U.S. Income Tax Return for an S Corporation annually.

S-Corporation shareholders are generally required to file Form 1120-S annually to ensure compliance with tax regulations and provide a comprehensive overview of the company's financial activities.