When is the Miami-Dade County property tax appeal deadline?
Miami-Dade County TRIM notices are expected to mail around Tuesday, August 18, which would put the petition deadline near Monday, September 14. These dates are pending county confirmation: we publish exact dates the day the county announces them, and we will email you if you ask below. From the mailing date, Florida law gives you 25 days to petition, or the assessment locks in for the year.
Provenance: dates above are estimates pending verification against the Miami-Dade County Clerk VAB page. Verify all deadlines with your county.
What is a TRIM notice?
The Truth in Millage notice is the letter every Florida property owner gets in August. It shows your proposed market value, assessed value, exemptions, and the taxes each authority plans to charge. It is not a bill. It is the one moment the number is still contestable.
How does the 25-day window work in Miami-Dade County?
The clock starts on the mailing date printed on the notice, not the day you read it. Your petition (form DR-486) must be received by the Miami-Dade County Value Adjustment Board by day 25. The filing fee is $15 per parcel in most Florida counties.
Is your assessment actually too high?
Most are not, and many homesteads are protected by the Save Our Homes cap, where an appeal cannot lower the bill at all. The free check reads Miami-Dade County's own records and qualified sales and tells you honestly, either way, in about 30 seconds.