How many days’ notice to raise rent in Florida?

Thirty days. For a Florida month-to-month tenancy, a rent increase takes the same written notice as ending the tenancy: 30 days under Fla. Stat. § 83.57. The increase cannot take effect until the full 30 days have run.

Why so many pages say 15

Florida’s period was 15 days for years, and the Legislature lengthened it to 30 in 2023. Pages written before the change — including landlord-association pages — still print 15, and newer pages copy them. A landlord who serves 15 days on the strength of a stale guide has served a defective notice: the increase does not take effect on the date printed, however reasonable the amount is.

How the count runs

Count forward from the day after service; the day of service itself is not counted, and the period must fully run before the effective date. Working backward is safer than working forward: pick the date you want the increase to take effect, subtract the full period under the counting rule, and serve on or before that day. That backward count is exactly what the free checker does — for Florida it returns the last-safe serve date, not just the number 30.

The traps around the number

• A fixed-term lease is different: the increase waits for renewal unless the lease itself provides otherwise — the 30-day rule on this page is the month-to-month rule.
• Local rules: some Florida localities add notice or relocation duties of their own; the state period is the floor, not the ceiling.
• Proof: serve by a method you can prove, and keep the proof with a copy of the notice as served.

Florida’s pay-or-quit period is a different clock entirely — 3 business days under § 83.56. Both are on the Florida deadline page.

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