IRS Filing Deadlines
Here are the key quarterly IRS deadlines most U.S. businesses need to know. If any deadline falls on a weekend or federal holiday, it moves to the next business day. Quarterly payroll tax returns (Form 941) • Q1 (Jan 1–Mar 31) – file by April 30 • Q2 (Apr 1–Jun 30) – file by July 31 • Q3 (Jul 1–Sep 30) – file by October 31 • Q4 (Oct 1–Dec 31) – file by January 31 (of the following year) Quarterly estimated income tax payments A. Individuals, sole proprietors, partners, S-corp shareholders (Form 1040-ES) and estates/trusts (Form 1041-ES) • Q1 payment – April 15 • Q2 payment – June 15 (or next business day) • Q3 payment – September 15 • Q4 payment – January 15 (of the following year) B. C corporations (Form 1120-W) • Q1 payment – April 15 • Q2 payment – June 15 • Q3 payment – September 15 • Q4 payment – December 15 Make sure you also deposit withheld payroll taxes according to your deposit schedule (semi-weekly or monthly) and file any state/local returns as required. If you’re ever...