2026 tax calendar
Every federal and Florida deadline that matters to a small business or its owner, in one place. Filter by who it applies to or by quarter.
23Deadlines tracked
Federal + FLBoth covered
2026Tax year
| Date | Applies to | Deadline |
|---|---|---|
| Jan 15, 2026 | Individual | Q4 2025 estimated tax payment due Final quarterly estimated payment for the 2025 tax year. |
| Jan 31, 2026 | Payroll | W-2 and 1099-NEC deadline Forms must be furnished to recipients and filed with the SSA or IRS. |
| Jan 31, 2026 | Payroll | Form 941 (Q4 2025) and Form 940 due Quarterly federal payroll return and annual FUTA return. |
| Jan 31, 2026 | Payroll | Florida RT-6 (Q4 2025) due Florida reemployment tax quarterly report. |
| Feb 20, 2026 | Business | Florida sales tax (January) due Form DR-15 for monthly filers. Late after the 20th. |
| Mar 16, 2026 | Business | S corporation & partnership returns due Forms 1120-S and 1065, or file Form 7004 to extend to September 15. |
| Mar 16, 2026 | Business | S corporation election deadline (Form 2553) To take effect for the 2026 calendar tax year. |
| Apr 15, 2026 | Individual | Individual tax returns due (Form 1040) Or file Form 4868 to extend to October 15. Payment is still due today. |
| Apr 15, 2026 | Business | C corporation returns due (Form 1120) Or file Form 7004 to extend to October 15. |
| Apr 15, 2026 | Individual | Q1 2026 estimated tax payment due First quarterly estimated payment for the 2026 tax year. |
| Apr 30, 2026 | Payroll | Form 941 (Q1) and Florida RT-6 due Quarterly federal payroll return and Florida reemployment tax report. |
| May 1, 2026 | Business | Florida annual report due Filed with the Division of Corporations. A $400 late penalty applies after this date. |
| May 15, 2026 | Business | Nonprofit Form 990 due For calendar-year exempt organizations. Extendable by six months on Form 8868. |
| Jun 15, 2026 | Individual | Q2 2026 estimated tax payment due Covers income earned April 1 through May 31, 2026. |
| Jul 31, 2026 | Payroll | Form 941 (Q2) and Florida RT-6 due Quarterly federal payroll return and Florida reemployment tax report. |
| Sep 15, 2026 | Business | Extended S corp & partnership returns due Final deadline for extended Forms 1120-S and 1065. No further extension. |
| Sep 15, 2026 | Individual | Q3 2026 estimated tax payment due Covers income earned June 1 through August 31, 2026. |
| Oct 15, 2026 | Individual | Extended individual returns due (Form 1040) Final deadline for extended personal returns. |
| Oct 15, 2026 | Business | Extended C corporation returns due Final deadline for extended Form 1120. |
| Nov 2, 2026 | Payroll | Form 941 (Q3) and Florida RT-6 due Quarterly filings: October 31 falls on a weekend in 2026. |
| Nov 16, 2026 | Business | Extended Form 990 due Final deadline for extended nonprofit returns. |
| Dec 31, 2026 | Business | Year-end planning deadline Last day for most tax-saving actions: equipment purchases, retirement contributions, timing decisions. |
| Jan 15, 2027 | Individual | Q4 2026 estimated tax payment due Final quarterly estimated payment for the 2026 tax year. |
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A note on these dates
Deadlines shift when they fall on a weekend or federal holiday, and your fiscal year may differ from the calendar year. This calendar covers the most common situations for Florida small businesses: we confirm every date against your specific circumstances as part of any engagement.
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