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Tax deadline calendar

The federal dates that matter for small businesses over the next year.

–days

Next deadline

  1. Extended individual and C corp returnsForm 1040, Form 1120
  2. Third-quarter payroll reportForm 941 (October 31 is a Saturday)
  3. C corp fourth-quarter estimated tax2026 estimates
  4. Fourth-quarter estimated tax for 2026Form 1040-ES
  5. W-2s, 1099-NECs and annual payroll formsW-2, 1099-NEC, Forms 940 and 941 (January 31 is a Sunday)
  6. S corp and partnership returns, and S corp elections for 2027Form 1120-S, Form 1065, Form 2553
  7. Individual and C corp returns, and first-quarter estimatesForm 1040, Form 1120, 2027 estimates
  8. First-quarter payroll reportForm 941
  9. Second-quarter estimated tax2027 estimates
  10. Second-quarter payroll reportForm 941 (July 31 is a Saturday)
  11. Third-quarter estimates and extended S corp and partnership returns2027 estimates, Form 1120-S, Form 1065
  12. Extended individual and C corp returnsForm 1040, Form 1120

Federal deadlines for calendar-year filers, already moved for weekends. Disaster relief can extend them and state dates differ, so confirm with your CPA.