Miami-Dade Property Tax Appeal Guide 2026: TRIM Notices, VAB Petitions, and Deadlines

If you own property in Miami-Dade County, the single most important piece of mail you'll receive this year lands in your mailbox in mid-to-late August: the TRIM Notice. Miss the window it opens and you're locked into your 2026 assessment, and the tax bill that comes with it, for another full year.

The good news: appealing your Miami-Dade property assessment costs $15 per folio, doesn't require a lawyer, and the county's own process gives you multiple chances to lower your bill. This guide walks through exactly how to do it, what the deadlines are, and how to decide whether an appeal is worth your time.

Short on time? AppealMyTax checks your Miami-Dade assessment against comparable properties in about 30 seconds and tells you whether you have a case, before you spend a dime.

Quick Facts: Miami-Dade Property Tax Appeals 2026

• TRIM notices mailed: mid-to-late August 2026
• VAB petition deadline: 25 days after the TRIM mailing date (typically early-to-mid September, the exact date is printed on your notice). No extensions.
• Filing fee: $15 per folio (property). Florida raised the statutory cap from $15 to $50 on July 1, 2025, and each county sets its own fee inside that cap. Miami-Dade has kept $15.
• Where to file: Miami-Dade Value Adjustment Board online portal (vabprod.miamidade.gov) or by paper using Form DR-486
• Who hears your case: An independent special magistrate appointed by the VAB, not the Property Appraiser
• Legal basis: Fla. Stat. § 194.011 (petitions), § 200.069 (TRIM notices)

How Miami-Dade Values Your Property

The Miami-Dade Property Appraiser assesses every property at its market value as of January 1, 2026. That value, minus your exemptions and assessment caps, determines your taxable value. Your actual tax bill is that taxable value multiplied by the combined millage rates set by the county, your city, the school board, and special districts, in most of Miami-Dade, roughly 1.8% to 2.2% of taxable value per year.

Two caps matter enormously here:

Save Our Homes (homesteaded property): Under Fla. Stat. § 193.155, the assessed value of a homesteaded property can rise no more than 3% per year or the change in CPI, whichever is lower, no matter how fast market values climb.

Non-homestead cap: Investment properties, second homes, and commercial property get a 10% annual assessment cap (school taxes excluded).

Why this matters for appeals: your appeal targets the market value the Property Appraiser assigned, not the capped assessed value. If the market value on your TRIM notice is higher than what your property would actually sell for, you have grounds to appeal, and a successful appeal can reset the baseline your future caps compound from.

Step 1: Read Your TRIM Notice Carefully (August)

The TRIM (Truth in Millage) Notice is not a bill. It shows your proposed market value, assessed value, exemptions, and estimated taxes under the proposed millage rates. When it arrives, check three things:

1. Market value. Is it higher than what your property would realistically sell for? Recent sales of similar homes in your neighborhood are the benchmark.
2. Exemptions. Confirm your homestead exemption (up to $50,000, with the second $25,000 now indexed to inflation), plus any senior, veteran, or disability exemptions you qualify for. A missing exemption is the fastest appeal win there is.
3. The petition deadline. It's printed on the notice, 25 days from the mailing date. Put it in your calendar the day the notice arrives.

Step 2: Try an Informal Review First (Free)

Before, or alongside, a formal petition, you can request an informal conference with the Miami-Dade Property Appraiser's office. You present your evidence, they review your file, and they can adjust the value without a hearing.

The catch: an informal review does not pause the VAB deadline. If the 25-day window is about to close and the Property Appraiser hasn't budged, file the petition anyway. You can always withdraw it later if the informal route resolves things; you cannot file late because you were waiting on a phone call.

Step 3: File Your VAB Petition (September)

The formal appeal goes to the Miami-Dade Value Adjustment Board (VAB), administered by the Clerk of the Courts. Here's the process:

1. Go to the VAB online portal at vabprod.miamidade.gov (online filing typically opens in early August) or file Form DR-486 on paper.
2. Pay the $15 filing fee per folio ($5 on qualifying joint petitions filed by condominium or cooperative associations).
3. Select the basis of your petition, most homeowners appeal the assessed/market value; you can also petition over denied exemptions or classifications.
4. Save your petition number. You'll use it for evidence uploads and hearing scheduling.

One critical financial note: under Fla. Stat. § 194.014, while your petition is pending you must still pay at least 75% of your ad valorem taxes (less applicable discounts) before they become delinquent, or your petition is automatically denied. Don't file and then skip the November bill.

Step 4: Build Your Evidence

VAB appeals are won on comparable sales. Your target: show that similar properties, same neighborhood, similar size, age, and condition, sold for less than your assessed market value around January 1, 2026.

Strong evidence includes:

• 3-5 comparable sales from late 2025/early 2026, adjusted for differences in square footage and condition
• Photos and repair estimates documenting condition problems the Property Appraiser can't see from the street (roof age, flooding, structural issues)
• An appraisal or inspection report, if you have a recent one
• Income and expense data, for rental or commercial property

Two procedural rules Miami-Dade enforces strictly: you must provide the Property Appraiser your evidence list and summary at least 15 days before your hearing, and evidence must be uploaded to the VAB's AXIA system by 9:00 a.m. the day before your scheduled hearing. Miss either and your evidence may be excluded.

Finding true comps, and adjusting them correctly, is where most DIY appeals fall apart. AppealMyTax pulls comparable sales for your specific property and packages them into evidence you can file directly with the VAB.

Step 5: The Hearing

Your case is heard by a special magistrate, an independent appraiser or attorney, not a county employee. Hearings run from late fall into spring. They're short (often 15-30 minutes), and the format is simple: you present your evidence, the Property Appraiser's office presents theirs, and the magistrate recommends a value to the VAB.

You don't need a lawyer. You do need organized, relevant evidence. Magistrates see hundreds of cases; a clean one-page comp grid beats a folder of Zillow screenshots every time.

If you win, your assessment is corrected and your tax bill recalculated, and if you already paid, you get a refund of the difference. If you lose at the VAB, you still have the option of filing suit in circuit court, though for most homeowners the VAB is the practical end of the road.

Is Appealing Worth It in Miami-Dade?

Run the math with Miami-Dade's effective combined millage of roughly 2%:

• Knock $50,000 off an over-assessed market value → roughly $1,000/year saved
• Knock $100,000 off → roughly $2,000/year saved

And because of the Save Our Homes cap, a successful appeal on a homesteaded property compounds: every future year's 3%-capped increase starts from the lower corrected base.

Against a $15-per-folio filing fee and a few hours of preparation, the expected value is strongly positive for anyone whose assessment looks even 5-10% high. Miami-Dade's market has cooled unevenly since its 2022-2024 run-up, condos and older single-family stock in particular often carry assessments that lag the correction. Those are exactly the properties worth checking.

Not sure if yours is one of them? Run a free 30-second check at AppealMyTax, we compare your assessment against recent sales and tell you if you have a case.

Frequently Asked Questions

When is the Miami-Dade property tax appeal deadline for 2026?

25 days after the TRIM notice mailing date, which typically puts the deadline in early-to-mid September 2026. The exact date is printed on your TRIM notice. The VAB grants no extensions.

How much does it cost to appeal my property taxes in Miami-Dade?

$15 per folio to file a VAB petition, one of the lowest fees left in Florida after the statewide cap rose to $50 in 2025. An informal review with the Property Appraiser is free.

Do I need a lawyer or agent to file a VAB petition?

No. Homeowners can file and represent themselves. Many use a consultant or service for the evidence package, comps are where cases are won or lost.

Can I appeal if I missed the September deadline?

Generally no, the 25-day deadline under Fla. Stat. § 194.011 is strict. Late petitions are accepted only in narrow "good cause" circumstances (for example, a documented hospitalization). If you missed it, mark August 2027 and prepare early.

Does filing an appeal freeze my tax bill?

No. You must pay at least 75% of your ad valorem taxes before delinquency while the petition is pending (Fla. Stat. § 194.014), or the petition is denied. Overpayments are refunded with interest if you win.

Will appealing lower my Save Our Homes cap or exemptions?

No. Appealing your market value doesn't jeopardize your homestead exemption or your Save Our Homes cap. A successful appeal can only lower, never raise, the base those protections apply to.

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This guide is for general information, not legal or tax advice. Deadlines and procedures are set by the Miami-Dade Clerk of Courts VAB and Florida law; always confirm the dates printed on your own TRIM notice.

Ready to find out if you're overpaying? Check your Miami-Dade assessment free at AppealMyTax →

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