The IRS will begin accepting 2013 business tax returns on Monday, January 13, 2014. This start date applies to both electronically-filed and paper-filed returns.
Business returns include any return that posts on the IRS Business Master File (BMF). BMF returns include a variety of income tax and information returns such as Form 1120 filed by corporations, Form 1120S filed by S corporations, Form 1065 filed by partnerships, and Form 1041 the return filed by estates and trusts. It also includes various excise and payroll tax returns, such as Form 720, Form 940, Form 941 and Form 2290. The IRS expects to be able to begin processing any of these business returns on January 13.
The January 13 start date does not apply to unincorporated small businesses that report their income on Form 1040. The start date for all 1040 filers is January 31, 2014.