Miami-Dade County guides
The Miami-Dade County TRIM notice — and the 25-day deadline it starts
Every August, the Miami-Dade County Property Appraiser mails a document most owners barely read: the Truth in Millage (TRIM) notice. It contains the county's new value for your home — and it starts a roughly 25-day clock to challenge that value before the Miami-Dade County Value Adjustment Board. Here's how the window works in Miami-Dade County.
Get ahead of the deadline
Run the free check now — if your assessment looks too high, you'll know before the clock even starts. Estimates, not guarantees.
Run my free checkMiami-Dade County — 2026 appeal window
- TRIM notices mail (estimated): August 17, 2026
- VAB petition deadline (estimated): September 11, 2026 — 25 days after the TRIM mailing (Fla. Stat. §194.011(3))
Estimated — your county has not yet published the official date. Check your TRIM notice when it arrives (typically mid-to-late August) for the exact filing deadline.
What the TRIM notice tells you
The TRIM notice — formally the “Notice of Proposed Property Taxes” — is required by Florida law and is not a bill. For your Miami-Dade County property it shows:
- The county's just (market) value for your home as of January 1
- Your assessed value — lower than just value if the Save Our Homes cap applies
- The exemptions on your property and your resulting taxable value
- The proposed tax rates from each taxing authority and the resulting proposed tax
- The deadline to petition the Miami-Dade County Value Adjustment Board — the one date to write down immediately
How the 25-day clock works
Under Fla. Stat. §194.011(3), the petition deadline runs 25 days from the date the county mails the TRIM notice — not from the day you open it. Every county mails on its own date, so Miami-Dade County's deadline is its own, and it differs from neighboring counties.
Two practical consequences:
- The printed date controls. Whatever deadline is printed on your TRIM notice is the date to act by — treat every date you see elsewhere (including on this page) as an estimate.
- Late filing is generally not an option. The statutory window is short and strict; missing it usually forfeits your appeal for the year. Whether any good-cause exception applies in a specific case is a question for the Miami-Dade County VAB clerk or an attorney.
What to do when your TRIM notice arrives
- 1
Write down the petition deadline
It's printed on the notice. Calendar it the day the envelope arrives — the clock is already running.
- 2
Sanity-check the county's value
Could you really sell your home for the just value shown? The free check compares your Miami-Dade County assessment to recent comparable sales in under 60 seconds.
Run your free check - 3
Check your exemptions
Confirm your homestead exemption (and any senior or other exemptions) are listed. A missing exemption costs you money regardless of any appeal.
- 4
If the value looks high, file before the deadline
The DR-486 petition must reach the Miami-Dade County VAB clerk within the window, with the statutory filing fee (typically $15 — confirm with the clerk).
The full filing process — evidence, the hearing, DIY vs. done-for-you — is in the Miami-Dade County property tax appeal guide.
Frequently asked questions
- When does Miami-Dade County mail TRIM notices?
- Florida counties mail TRIM notices in mid-to-late August. For 2026, Miami-Dade County's mailing is estimated around August 17, 2026 based on prior-year patterns — the county has not necessarily published its official date yet, so treat this as an estimate and check your mailbox (and the Property Appraiser's website) in August.
- How long do I have to appeal after the TRIM notice in Miami-Dade County?
- Generally 25 days from the date the TRIM notice is mailed (Fla. Stat. §194.011(3)). The exact deadline is printed on the notice itself — that printed date controls. Missing it usually means waiting until next year.
- What if I never received my TRIM notice?
- Not receiving the notice does not extend the deadline. You can look up your assessment on the Miami-Dade County Property Appraiser's website at any time, and you can run Abatero's free check on your address to see your current assessed values before the notice even arrives.
- Is the TRIM notice my tax bill?
- No. The TRIM notice is a preview — your proposed values, exemptions, and proposed tax rates. The actual bill arrives later, typically in November. The TRIM window in August/September is your chance to challenge the assessment before that bill is final.
More on Miami-Dade County
- Miami-Dade County property taxes — overview
- How to appeal your property taxes in Miami-Dade County
- Is my Miami-Dade County assessment too high?
- Our in-depth Miami-Dade guides (appeal walkthrough, exemptions, and more)
Other Florida counties
Don't let the deadline catch you off guard
Run the free check now — if your Miami-Dade County assessment looks too high, you'll have time to file before the window closes. Estimates, not guarantees.
Check my home — freeAbatero is not a law firm and does not provide legal advice. Abatero is not affiliated with, or endorsed by, Miami-Dade County, the Miami-Dade County Property Appraiser, or the Miami-Dade County Value Adjustment Board.
All savings figures are estimates, not guarantees — no one can promise your assessment will be reduced. Deadline dates and filing fees shown on this page are estimates based on Florida statute and prior-year county data; always confirm the exact deadline and fee on your TRIM notice and with the Miami-Dade County VAB clerk before filing.