The majority of people file a 1040 for their federal tax returns. Corporations (including S and C Corps) - C corporations (Form 1120) also file on April 15, 2025. S corporations (Form 1120S ...

including Form 1040 (Individual Income Tax Return), 1120 (U.S. Corporation Income Tax Return), 1041 (U.S. Income Tax Return for Estates and Trusts), and others. To avoid late filing penalties and ...