How to Appeal Property Taxes in Miami-Dade County, Florida (2026 Guide)

Direct answer: For 2026 Miami-Dade property value appeals, plan on a September 16, 2026 VAB filing deadline, based on Florida’s 25-day rule after the TRIM notice mailing; the deadline printed on your 2026 TRIM notice controls if it differs. File with the Miami-Dade County Value Adjustment Board, not the Property Appraiser, through the VAB online system or by delivering the petition to 111 NW First Street, Suite 1720, Miami, FL 33128. (miamidadeclerk.gov)

How assessments work in Miami-Dade County

Miami-Dade’s assessment date is January 1, 2026. The Property Appraiser estimates your property’s market value as of that date, releases current-year values by July 1, and mails the Notice of Proposed Property Taxes, called the TRIM notice, in August. The TRIM notice shows market value, assessed value, taxable value, exemptions, proposed millage rates, public budget hearings, and the VAB deadline. (miamidade.gov)

Do not confuse three values. Market value is the appraiser’s estimate of what the property was worth on January 1. Assessed value may be lower because of assessment limits such as Save Our Homes. Taxable value is assessed value minus exemptions. For homesteaded property, the basic homestead exemption can be up to $50,000: the first $25,000 applies to all property taxes, and the added $25,000 applies to assessed value over $50,000 but not school taxes. Save Our Homes limits annual assessed-value increases, beginning the year after homestead is granted, to the lesser of CPI change or 3%. (miamidade.gov)

A VAB appeal is not a complaint that “taxes are too high.” The VAB cannot change tax rates or non-ad valorem fees such as solid waste, lighting, guard districts, or CDD assessments. It can reduce market or assessed value, or decide exemption/classification/portability disputes. (www2.miamidadeclerk.gov)

Whether you should appeal

Appeal if your evidence shows the January 1 value is too high or an exemption/portability benefit was wrongly denied. Good Miami-Dade evidence usually means closed comparable sales from late 2025 through early 2026, preferably in the same subdivision, condo building, waterfront/non-waterfront category, school area, and condition tier. For condos, same-line or same-building sales often matter more than countywide trends. For single-family homes, adjust for lot size, waterfront, pool, roof age, additions, flood exposure, unpermitted areas, and condition.

Start with your online property record card and TRIM notice. Look for wrong living area, wrong bedroom/bath count, duplicate improvements, a missed demolition, damage, or a sale the appraiser treated as comparable even though it is newer, renovated, larger, on the water, or outside your neighborhood. Miami-Dade makes property record cards available online for VAB purposes. (miamidade.gov)

There is no official Miami-Dade source I found publishing a homeowner “success rate” or median reduction for recent VAB appeals. The Clerk’s VAB system lets the public search petitions, but that is case-level information, not a county-published success statistic. Do not rely on a tax consultant’s advertised reduction rate unless they explain the denominator.

A realistic savings example: Miami-Dade’s adopted FY 2025-26 county millage table lists 9.5778 mills as the sum of county operating and debt millages for an unincorporated-area example including Countywide, Fire Rescue, Library, UMSA, and countywide debt. If you prove a $75,000 taxable-value reduction, the county-portion savings would be about $75,000 × 9.5778 ÷ 1,000 = $718.34. Your full bill may save more or less because school, city, water-management, and special-district millages vary by address, and exemptions do not apply to every authority the same way. (miamidade.gov)

Step-by-step how to file

1. Read the 2026 TRIM notice immediately. The controlling VAB deadline is the date on that notice. Florida says value petitions are due within 25 days of the Notice of Proposed Property Taxes; Miami-Dade’s Clerk page says TRIM notices are usually mailed the last week of August. The 2025 deadline was September 16, 2025, and the same calendar pattern points to September 16, 2026 for 2026 unless the TRIM notice says otherwise. (miamidadeclerk.gov)

2. Choose the right form. For a value appeal, exemption denial, classification issue, late-filed exemption/classification, catastrophic-event refund, or similar issue, use DR-486, Petition to the Value Adjustment Board — Request for Hearing. For portability, use DR-486PORT, Petition to the Value Adjustment Board — Transfer of Homestead Assessment Difference — Request for Hearing. For tax deferral or penalties, use DR-486DP. The Florida Department of Revenue forms page lists the current versions, including DR-486 R. 12/25 and DR-486PORT R. 12/25. (floridarevenue.com)

3. File with the VAB Clerk. Online filing is available through the Miami-Dade VAB system; the online instructions say you need the folio number and that online payment accepts Visa, MasterCard, or American Express. You may also file by mail or in person at Stephen P. Clark Center, Value Adjustment Board, 111 NW First Street, Suite 1720, Miami, Florida 33128. The official pages do not list email as a petition-filing method, so do not rely on email to meet the deadline. (www2.miamidadeclerk.gov)

4. Pay the fee. The fee is generally $15 per folio for a single real-property or tangible-personal-property petition, with a $5 per parcel maximum in certain joint petitions by condo, cooperative, mobile-home associations, or owners of contiguous undeveloped parcels. Checks should be payable to Clerk of the Value Adjustment Board. Filing means received by the Clerk; a petition postmarked before the deadline but received after it is late. (miamidadeclerk.gov)

5. Consider an informal conference, but do not miss VAB. DR-486 says you have a right to an informal conference with the Property Appraiser, but it is not required and does not extend the VAB deadline. (floridarevenue.com)

What happens after

The appeal authority is the Miami-Dade County Value Adjustment Board. The Clerk of the Court and Comptroller is the VAB Clerk. The VAB appoints special magistrates: appraiser special magistrates hear value cases, and attorney special magistrates hear exemption and agricultural-classification cases. The Property Appraiser appears as a party, just like the taxpayer. (miamidadeclerk.gov)

Expect a hearing notice. Miami-Dade procedures say written hearing notices must be received at least 25 calendar days before the hearing, and the Clerk is treated as compliant if the notice is mailed 30 days before the hearing date. Hearings are held Monday through Friday, except holidays, beginning at 8:30 a.m.; the Clerk page also says hearings are currently conducted telephonically. (miamidadeclerk.gov)

Evidence has two steps. First, at least 15 days before the hearing, you must give the Property Appraiser your evidence list, witness summaries, and copies of documents; the Property Appraiser must also provide its evidence to you at least 15 days before the hearing. Second, Miami-Dade requires evidence you want the special magistrate to consider to be uploaded into AXIA by 9:00 a.m. Eastern the day before the hearing. These are separate requirements. (floridarevenue.com)

If you do not want to attend, DR-486 lets you check that you will not attend but want your evidence considered; you must submit duplicate evidence copies to the VAB Clerk, and the ruling occurs under the same standards as if you were present. Most hearings are short; the state form notes most take about 15 minutes, although the VAB is not bound by your requested time. (floridarevenue.com)

If a petition is still pending after the tax bill comes out, pay attention to the partial-payment rule. For value and portability petitions, you must pay all non-ad valorem assessments and at least 75% of the ad valorem taxes before delinquency, or the VAB will deny the petition. Miami-Dade says refunds from VAB hearings usually take six to eight weeks from the time hearings are held. (floridarevenue.com)

Local tips

Check exemptions before spending time on a value fight. Miami-Dade’s exemption guide lists homestead, senior, long-term resident senior, widow/widower, civilian disability/blind, veteran disability, total and permanent disability, deployed military, first responder, and other benefits. For 2026, the guide lists a $37,712 household income limit for one total-and-permanent civilian disability category; senior limits are adjusted annually, so use the current Property Appraiser guide. (miamidade.gov)

If you bought in 2025, your 2026 assessment may jump because the prior owner’s Save Our Homes cap comes off. That jump is not automatically an error; appeal only if the January 1 market value is still above supported market evidence. (miamidade.gov)

For Miami-Dade condos, attach the building’s sales grid, note floor/view/line differences, and flag special assessments or structural-recognition issues that existed by January 1. For houses, photos and repair estimates are strongest when they show conditions existing on January 1, not renovations you decided to do later. And if mailing a petition, send it early enough to be received—not merely postmarked—before the deadline.