Martin County Property Tax Rate & Calculator
Updated October 3, 2026 · Data: Florida DOR 2024 County Profile
Martin County levied an average of 16.728 mills in 2024, 0.37 mills above the statewide average and the 18th highest of Florida's 67 counties, which puts it in the higher half of Florida counties.
Estimate your Martin County tax bill
Using 16.728 mills, the county's 2024 average effective rate from Florida Department of Revenue data, and the 2026 homestead exemption amounts. Your actual bill depends on your city, special districts, non-ad valorem fees and future millage decisions. How we calculate.
Estimated property tax in Martin County
Annual tax at Martin County's average rates. The homestead columns apply the $25,000 exemption to all levies and the additional 2026 exemption of $26,411 to non-school levies. "New resident" assumes a homestead first established in 2027 and shows its 2027 amount.
| Assessed value | Homestead today | A3 · 2028 | A3 savings | A3 · new resident (2027) | Non-homestead |
|---|---|---|---|---|---|
| $200,000 | $2,638 | $1,006 | $1,631 | $2,653 | $3,346 |
| $350,000 | $5,147 | $2,967 | $2,180 | $5,162 | $5,855 |
| $500,000 | $7,656 | $5,476 | $2,180 | $7,671 | $8,364 |
| $750,000 | $11,838 | $9,658 | $2,180 | $11,854 | $12,546 |
On a $350,000 homestead, the non-school portion of the bill is about $3,278. That is the part Amendment 3 targets, which is why savings in Martin County track its non-school millage of 10.978.
Where Martin County property taxes go
Total ad valorem taxes levied in 2024 were $603 million. The school district received 37% of that.
| Taxing authority | Levied 2024 | Share | |
|---|---|---|---|
| School district | $220 million | 36.6% | |
| County government | $229 million | 38.0% | |
| Cities | $40,955,431 | 6.8% | |
| Special districts & MSTUs | $112 million | 18.6% |
The county's total just (market) value was $56.9 billion, with $34.8 billion taxable for county purposes and $38.3 billion taxable for schools. The gap between those two numbers comes from the additional homestead exemption and the 10% non-homestead cap, which do not apply to school taxes.
Exemptions and deadlines in Martin County
- Homestead exemption: file with the Martin County Property Appraiser by March 1. See our homestead exemption guide.
- Save Our Homes cap: once homesteaded, your assessed value can rise no more than 3% or inflation each year, whichever is lower. How the cap and portability work.
- TRIM notice: arrives in mid-August. You have 25 days to petition the Value Adjustment Board. How to appeal.
- Tax bill: mailed November 1 by the Martin County Tax Collector; pay in November for a 4% discount. Discounts and installment plans.
Martin County property tax FAQ
What is the property tax rate in Martin County?
The 2024 average effective rate in Martin County was 16.728 mills, or about $16.73 per $1,000 of taxable value. That combines 5.750 school mills and an average of 10.978 non-school mills across the county, cities and special districts.
How much is property tax on a $350,000 home in Martin County?
For a homestead with a $350,000 assessed value, the estimate is about $5,147 a year after the standard homestead exemptions. A non-homestead property with the same assessed value would pay about $5,855.
How much would Amendment 3 save in Martin County?
If Amendment 3 passes, an existing homestead assessed at $350,000 would pay about $2,967 in 2028, a savings of roughly $2,180 a year, assuming local millage stays the same. School taxes are not affected.
When is the homestead exemption deadline in Martin County?
March 1, the same date statewide. You must own the home and make it your permanent residence as of January 1 of the tax year, and file with the Martin County Property Appraiser.