Tax Deadlines
Florida Tax Filing Deadlines You Shouldn't Miss in 2026
Florida has no personal state income tax, but federal deadlines still apply to almost every individual and business in Palm Beach Gardens. Miss one and you can owe penalties and interest even when you're owed a refund. Here is a practical calendar of the 2026 deadlines that matter most for individuals and business owners.
The dates below are for 2025 tax-year returns filed in 2026. When a deadline falls on a weekend or federal holiday, the IRS shifts it to the next business day, which is why several 2026 dates land on the 16th instead of the 15th.
Key 2026 federal deadlines
- March 16, 2026 — Form 1065 (partnerships and multi-member LLCs) and Form 1120-S (S corporations). These entity returns are due before individual returns, because the K-1s they produce feed into your personal 1040.
- April 15, 2026 — Form 1040 (individuals), Form 1041 (estates and trusts), and Form 1120 (C corporations). This is also the deadline for first-quarter 2026 estimated tax payments.
- September 15, 2026 — Extended deadline for Form 1065 and Form 1120-S when a timely extension was filed.
- September 30, 2026 — Extended deadline for Form 1041 (trusts and estates receive a 5.5-month extension).
- October 15, 2026 — Extended deadline for Form 1040 and Form 1120 when a timely extension was filed.
Estimated tax payment dates
If you're self-employed, own a pass-through business, or have income not fully covered by withholding, quarterly estimated payments help you avoid underpayment penalties. The four 2026 due dates for 2026 estimated tax are April 15, June 15, September 15, 2026, and January 15, 2027.
What's different in Florida
Florida does not levy a personal income tax, so there is no separate state 1040 to file. C corporations, however, are generally subject to Florida corporate income tax, which piggybacks on the federal return. S corporations and partnerships are typically not subject to Florida corporate income tax, though certain built-in-gains situations can create a state-level filing. Talk to us before assuming your entity is exempt.
Sources: IRS Publication 509 (2026) tax calendars and the IRS Form 7004 due-date tables. Verify the current date on the IRS site before relying on it.
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Individual Tax Preparation
Complex personal tax returns call for more than data entry. We carefully organize the moving parts, identify planning opportunities and prepare an accurate federal return with your complete financial picture in mind.
Learn about Individual Tax PreparationCommon questions
Does Florida have a state income tax return for individuals?
No. Florida has no personal state income tax, so individuals do not file a state income tax return. Federal deadlines still apply.
What happens if I miss the April 15 deadline?
If you owe tax and miss the deadline, the IRS can assess failure-to-file and failure-to-pay penalties plus interest. Filing an extension gives you more time to file, but not more time to pay any tax due.
Do I need to file an extension?
An extension is useful if your records aren't ready by the deadline. It extends the time to file, but any tax you owe is still due by the original deadline to avoid penalties and interest.