What are your next federal deadlines?

Four questions, and the calendar shows only what concerns you.

Federal deadlines, plus Delaware for companies incorporated there. Other states and cities — California, New York, San Francisco, sales tax registrations — are not in this calendar.

Your profile

All deadlines

September 2026

  1. Delaware franchise tax — estimated instalmentOnly if your franchise tax reaches the estimated-payment threshold.Delaware
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Form 1065 — partnership returnFederal
  5. Form 1120 — corporate income tax returnFederal
  6. Form 1120 — corporate income tax returnA June 30 year end files a month earlier than every other year end.Federal
  7. Form 1120-S — S corporation income tax returnFederal
  8. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

October 2026

  1. Estimated tax instalmentCash
  2. Form 1065 — partnership returnFederal
  3. Form 1120-S — S corporation income tax returnFederal

November 2026

  1. Form 941 — quarterly payroll tax returnPayroll
  2. Estimated tax instalmentCash
  3. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  4. Form 1065 — partnership returnFederal
  5. Form 1120 — corporate income tax returnFederal
  6. Form 1120-S — S corporation income tax returnFederal
  7. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

December 2026

  1. Delaware franchise tax — estimated instalmentOnly if your franchise tax reaches the estimated-payment threshold.Delaware
  2. Estimated tax instalmentCash
  3. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  4. Form 1065 — partnership returnFederal
  5. Form 1120 — corporate income tax returnFederal
  6. Form 1120-S — S corporation income tax returnFederal
  7. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

January 2027

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  6. Form 1065 — partnership returnFederal
  7. Form 1120 — corporate income tax returnFederal
  8. Form 1120-S — S corporation income tax returnFederal
  9. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

February 2027

  1. Form 1099-NEC — contractor paymentsFor each contractor paid at least the annual reporting threshold.Federal
  2. Form 940 — annual federal unemployment tax returnPayroll
  3. Form 941 — quarterly payroll tax returnPayroll
  4. Forms W-2 and W-3 — filingCopies must reach employees by the same date.Payroll
  5. Estimated tax instalmentCash
  6. Estimated tax instalmentCash
  7. Estimated tax instalmentCash
  8. Estimated tax instalmentCash
  9. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  10. Form 1065 — partnership returnFederal
  11. Form 1120 — corporate income tax returnFederal
  12. Form 1120-S — S corporation income tax returnFederal
  13. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

March 2027

  1. Delaware annual report and franchise taxDelaware corporations. Missing it costs a fixed penalty plus monthly interest.Delaware
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Estimated tax instalmentCash
  6. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  7. Form 1065 — partnership returnFederal
  8. Form 1120 — corporate income tax returnFederal
  9. Form 1120-S — S corporation income tax returnFederal
  10. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

April 2027

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Form 1065 — partnership returnFederal
  6. Form 1120 — corporate income tax returnFederal
  7. Form 1120-S — S corporation income tax returnFederal
  8. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end
  9. Schedule C — filed with the owner's individual returnReported on the owner's individual return, not a separate one.Federal
  10. Form 941 — quarterly payroll tax returnPayroll

May 2027

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  5. Form 1065 — partnership returnFederal
  6. Form 1120 — corporate income tax returnFederal
  7. Form 1120-S — S corporation income tax returnFederal
  8. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

June 2027

  1. Delaware franchise tax — first estimated instalmentLargest instalment. Only if your franchise tax reaches the estimated-payment threshold.Delaware
  2. Delaware annual LLC / LP taxDelaware LLCs, LPs and general partnerships. No annual report to file, only the tax.Delaware
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Estimated tax instalmentCash
  6. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  7. Form 1065 — partnership returnFederal
  8. Form 1120 — corporate income tax returnFederal
  9. Form 1120-S — S corporation income tax returnFederal
  10. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

July 2027

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  4. Form 1065 — partnership returnFederal
  5. Form 1120 — corporate income tax returnFederal
  6. Form 1120-S — S corporation income tax returnFederal
  7. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

August 2027

  1. Form 941 — quarterly payroll tax returnPayroll
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  5. Form 1065 — partnership returnFederal
  6. Form 1120 — corporate income tax returnFederal
  7. Form 1120-S — S corporation income tax returnFederal
  8. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

September 2027

  1. Delaware franchise tax — estimated instalmentOnly if your franchise tax reaches the estimated-payment threshold.Delaware
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  5. Form 1065 — partnership returnFederal
  6. Form 1120 — corporate income tax returnFederal
  7. Form 1120 — corporate income tax returnA June 30 year end files a month earlier than every other year end.Federal
  8. Form 1120-S — S corporation income tax returnFederal
  9. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

October 2027

  1. Estimated tax instalmentCash
  2. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  3. Form 1065 — partnership returnFederal
  4. Form 1120-S — S corporation income tax returnFederal

November 2027

  1. Form 941 — quarterly payroll tax returnPayroll
  2. Estimated tax instalmentCash
  3. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  4. Form 1065 — partnership returnFederal
  5. Form 1120 — corporate income tax returnFederal
  6. Form 1120-S — S corporation income tax returnFederal
  7. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

December 2027

  1. Delaware franchise tax — estimated instalmentOnly if your franchise tax reaches the estimated-payment threshold.Delaware
  2. Estimated tax instalmentCash
  3. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  4. Form 1065 — partnership returnFederal
  5. Form 1120 — corporate income tax returnFederal
  6. Form 1120-S — S corporation income tax returnFederal
  7. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

January 2028

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  6. Form 1065 — partnership returnFederal
  7. Form 1120 — corporate income tax returnFederal
  8. Form 1120-S — S corporation income tax returnFederal
  9. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end
  10. Form 1099-NEC — contractor paymentsFor each contractor paid at least the annual reporting threshold.Federal
  11. Form 940 — annual federal unemployment tax returnPayroll
  12. Form 941 — quarterly payroll tax returnPayroll
  13. Forms W-2 and W-3 — filingCopies must reach employees by the same date.Payroll

February 2028

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  6. Form 1065 — partnership returnFederal
  7. Form 1120 — corporate income tax returnFederal
  8. Form 1120-S — S corporation income tax returnFederal
  9. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

March 2028

  1. Delaware annual report and franchise taxDelaware corporations. Missing it costs a fixed penalty plus monthly interest.Delaware
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Estimated tax instalmentCash
  6. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  7. Form 1065 — partnership returnFederal
  8. Form 1120 — corporate income tax returnFederal
  9. Form 1120-S — S corporation income tax returnFederal
  10. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

April 2028

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Form 1065 — partnership returnFederal
  6. Form 1120 — corporate income tax returnFederal
  7. Form 1120-S — S corporation income tax returnFederal
  8. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end
  9. Schedule C — filed with the owner's individual returnReported on the owner's individual return, not a separate one.Federal

May 2028

  1. Form 941 — quarterly payroll tax returnPayroll
  2. Estimated tax instalmentCash
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  6. Form 1065 — partnership returnFederal
  7. Form 1120 — corporate income tax returnFederal
  8. Form 1120-S — S corporation income tax returnFederal
  9. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

June 2028

  1. Delaware franchise tax — first estimated instalmentLargest instalment. Only if your franchise tax reaches the estimated-payment threshold.Delaware
  2. Delaware annual LLC / LP taxDelaware LLCs, LPs and general partnerships. No annual report to file, only the tax.Delaware
  3. Estimated tax instalmentCash
  4. Estimated tax instalmentCash
  5. Estimated tax instalmentCash
  6. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  7. Form 1065 — partnership returnFederal
  8. Form 1120 — corporate income tax returnFederal
  9. Form 1120-S — S corporation income tax returnFederal
  10. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

July 2028

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  4. Form 1065 — partnership returnFederal
  5. Form 1120 — corporate income tax returnFederal
  6. Form 1120-S — S corporation income tax returnFederal
  7. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end
  8. Form 941 — quarterly payroll tax returnPayroll

August 2028

  1. Estimated tax instalmentCash
  2. Estimated tax instalmentCash
  3. Form 1120 — extended filing deadlineOnly if Form 7004 was filed on time.Year end
  4. Form 1065 — partnership returnFederal
  5. Form 1120 — corporate income tax returnFederal
  6. Form 1120-S — S corporation income tax returnFederal
  7. Form 7004 — automatic extension requestBuys six more months to file — not six more months to pay.Year end

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These are the federal deadlines set out in IRS Publication 509, moved to the next business day when they fall on a Saturday, Sunday or legal holiday. They are provided for information and do not replace professional advice on your situation.