§ Tax Center
BOCA RATON · UPDATED MAY 2026
Tax Due Dates
The federal tax calendar. Dates below are the official IRS deadlines for 2026 — if a date falls on a weekend or federal holiday, the deadline moves to the next business day. Florida has no state income tax, so these are what matters for most South Florida filers.
Jump to section
Individual filers (Form 1040)
Regular filing deadline is April 15. A six-month extension filed by April 15 pushes the filing deadline to October 15 — but the extension does NOT delay payment of tax owed.
| Date | What's due |
|---|---|
| Jan 15, 2026 | Q4 2025 estimated tax payment |
| Apr 15, 2026 | 2025 Form 1040 + payment · 2025 IRA/HSA contributions · Q1 2026 estimated tax |
| Jun 16, 2026 | Q2 2026 estimated tax payment |
| Sep 15, 2026 | Q3 2026 estimated tax payment |
| Oct 15, 2026 | 2025 Form 1040 (extended filers) |
| Jan 15, 2027 | Q4 2026 estimated tax payment |
Partnerships & S-Corporations (Forms 1065 & 1120-S)
Partnerships and S-Corporations file earlier than individuals — March 15 for calendar-year entities. Extensions push filing to September 15.
| Date | What's due |
|---|---|
| Mar 16, 2026 | 2025 Form 1065 (partnerships) + K-1s · 2025 Form 1120-S (S-corps) + K-1s |
| Sep 15, 2026 | 2025 Form 1065 / 1120-S (extended filers) |
C-Corporations (Form 1120)
Calendar-year C-corps file by April 15 — same as individuals. Extensions push filing to October 15, but tax payment is still due April 15.
| Date | What's due |
|---|---|
| Apr 15, 2026 | 2025 Form 1120 + payment |
| Apr 15 / Jun 16 / Sep 15 / Dec 15 | Quarterly estimated tax (C-corps) |
| Oct 15, 2026 | 2025 Form 1120 (extended filers) |
Employer & payroll filings
Employers have separate calendar obligations for withholding, FUTA, and information returns.
| Date | What's due |
|---|---|
| Jan 31, 2026 | W-2s to employees · 1099-NEC to contractors · Q4 Form 941 · Annual Form 940 (FUTA) |
| Apr 30 / Jul 31 / Oct 31 | Quarterly Form 941 |
| Feb 28, 2026 | Paper 1099-MISC to IRS (e-file deadline March 31) |
Other resources
Ready to talk?
A 30-minute scoping call costs nothing.
Free 30-minute call to confirm fit. If we are the right firm for the work, we send a written scope and a flat fee. If we are not, we point you elsewhere.