One Florida house, thirteen tax rates, and two taxable values that are never the same

Lee County's 2025 millage book runs to 109 pages. One page per tax district, printed on 13 October 2025, after every rate on it had been adopted. Page three covers a district called North Ft Myers Light / Fire, and it lists 14 separate governments with a claim on the property inside it: the county, the school board twice, the unincorporated services district, the library, a fire district, a streetlighting unit, three water management levies, mosquito control, hyacinth control, an all-hazards district and an inland navigation district. Their rates sum to 14.6810 mills.

That is the calculation. The equation everybody publishes is the summary of it.

How are property taxes calculated in Florida?

Just value minus assessment limitations gives assessed value. Assessed value minus exemptions gives taxable value. Taxable value divided by 1,000 and multiplied by the millage rate gives the ad valorem tax, to which any non-ad valorem assessments are added. Every step of that is correct. None of it is performed once.

It is performed once per taxing authority, because each authority has its own rate and, in the homestead case, they do not all use the same taxable value. In Lee County for 2025 the property appraiser certified 88 distinct authority rates spread across 107 tax districts, with between 8 and 14 of them applying to any single parcel and a median of 13. Collier certified 42 across 314 millage areas, between 8 and 13 per parcel, median 10.

The money involved is not marginal. Adding line 18 across the 76 Lee certifications that parse cleanly gives $1,620,236,089 of ad valorem tax to be levied for 2025, and that total excludes the school district entirely, because school boards certify on a different form that is not in the book.

Why does one Florida property have two different taxable values?

Because section 196.031(1)(b) says so. The first $25,000 homestead exemption applies to every levy. The additional exemption, which applies to assessed value above $50,000, is granted "for all levies other than school district levies". So the school district taxes a larger number than the county taxes, on the same house, in the same year.

The additional exemption is no longer a flat $25,000. Amendment 5, approved in November 2024, requires an annual upward adjustment whenever the consumer price index change is positive, and the Lee County Property Appraiser puts the result at $25,722 for the 2025 tax year and $26,411 for 2026.

Take a homesteaded property assessed at $400,000 for 2025. Its school taxable value is $375,000. Its non-school taxable value is $349,278. In the median Lee district those two numbers meet two different rates: 5.3190 mills of school levies against the larger figure and 9.3620 mills of everything else against the smaller. The bill is $1,994.63 plus $3,269.94, or $5,264.57.

Run the same house through a single taxable value and the answer is wrong by $136.82. That is not a rounding artefact. It is the precise annual price of the school district's statutory exemption from the second exemption, and it grows every year that the index rises.

How much does the same house pay in different parts of the same county?

A great deal more than most owners assume, and the difference has nothing to do with the house.

That $400,000 assessed homestead pays $3,918.90 in the cheapest named Lee County district and $5,909.30 in the most expensive, a spread of 50.8 percent. In Collier the same property pays $3,033.06 in millage area 147 and $6,515.85 in area 15, which is Everglades City. That spread is 114.8 percent, and Everglades City reaches it by stacking a 6.6558 mill municipal levy and a 4.0000 mill Ochopee Fire levy on top of the county and school rates that everyone in Collier pays.

Neither figure is a valuation judgment. The appraiser assessed both houses identically. The gap is entirely a question of which districts drew their boundaries around the parcel, and a buyer comparing two listings in the same county is comparing two different tax regimes without being told.

If the rate did not change, why did the bill go up?

Because under Florida law an unchanged rate is an increase, and the state makes the taxing authority advertise it as one.

Section 200.065(1) defines the rolled-back rate as the rate that would raise the same ad valorem revenue as the prior year from the same tax base, excluding new construction. When existing values rise, the rolled-back rate falls below last year's rate. Section 200.065(3)(a) then requires any taxing authority other than a school district that tentatively adopts a rate above 100 percent of the rolled-back rate to run a newspaper advertisement headed NOTICE OF PROPOSED TAX INCREASE. Everyone else runs the milder NOTICE OF BUDGET HEARING.

The Lee County DR-420 book for 2025 contains 79 certifications. Seventy-six of them parse cleanly, and of those 76, exactly 47 proposed the identical rate they had levied the year before. Forty-four of those 47 still sat above the rolled-back rate. Sixty-two of the 76 were above it on any basis. Measured on adopted rather than proposed rates, 69 of Lee's 88 authorities finished above rolled back, and 106 of its 107 tax districts had a combined rate above the combined rolled-back rate.

Lee County's own general revenue levy is the clean illustration. The commission set 3.7623 mills for 2025, which is precisely what it set for 2024. The rolled-back rate was 3.6162. Prior year proceeds of $519,679,960 became a proposed levy of $562,123,556, an increase of $42,443,596 with the rate untouched. Nobody voted for a rate rise. The take rose 8.2 percent.

Which part of a Florida school tax is actually set locally?

Less than half of it, and the local half is identical in both counties, which is the tell.

Lee and Collier both levy exactly 2.2480 mills under the heading of the local school board. That is not a coincidence and it is not local discretion. Section 1011.71(1) leaves the maximum discretionary operating millage to be prescribed by the Legislature in the annual appropriations act, and section 1011.71(2) caps the capital outlay levy at 1.5 mills. Two districts with very different tax bases and very different politics arrived at the same four decimal places because both are at the ceiling.

The other component is not local at all. Section 1011.62(4)(a)1.a requires the Commissioner of Education to compute a single millage rate which, applied to 96 percent of the state's estimated taxable value, raises the aggregate required local effort that the Legislature has written into the appropriations act. That rate is then certified to every district. Two statutory adjustments follow: one reduces the rate of any district whose required local effort would otherwise produce more than 90 percent of its total funding entitlement, and one applies an equalization factor for how completely a county assesses at market.

The result is the largest single line on most Southwest Florida tax bills. Lee's state-law rate for 2025 is 3.0710 mills, more than the county's entire general revenue levy. Collier's is 2.0010. That 1.0700 mill gap is worth $401.25 a year on a $375,000 school taxable value, and no elected official in either county set either number.

How can a bill reach 16 mills when the constitutional cap is ten?

Because the ten-mill cap was never a cap on the bill.

Article VII, Section 9(b) of the Florida Constitution sets ten mills for all county purposes, ten mills for all municipal purposes and ten mills for all school purposes. Three ceilings, not one. Water management outside the northwest gets 1.0 mill of its own. Every other special district is authorized by its own law and approved by its own electors, and sits outside the three caps entirely.

So the Fort Myers redevelopment areas reach 16.5269 mills without any authority exceeding anything. The county is at 3.7623 against a ten-mill county ceiling. The school district is at 5.3190 against a ten-mill school ceiling. The fire district, the library district, the mosquito control district and the rest are governed by their own enabling acts. An owner reading the constitution and expecting a total of ten is reading a limit that applies to three of the fourteen lines on the page.

What is on the bill that the millage does not cover?

Non-ad valorem assessments, and the statute is unusually blunt about what they are. Section 197.3632(1)(d) defines them as assessments "which are not based upon millage" and which can attach as a lien against a homestead. Solid waste, stormwater, streetlighting in some districts, fire service fees where a district charges rather than levies.

They arrive on the same envelope, they are collected by the same tax collector on the same schedule, and they are outside every number in this piece. Lee's millage book prints the warning on every one of its 109 pages: the listing does not include any non-ad valorem special assessments. A homeowner reconciling a millage calculation against an actual bill and finding a gap has usually found this, not an error.

Why is market value falling while taxable value rises?

Because the assessment caps work in both directions, and 2026 is the year Southwest Florida is watching them do it.

Collier's preliminary 2026 roll puts total market value at $221,614,994,809, down 3.03 percent from the 2025 final roll. Total taxable value on the same preliminary roll is $170,279,116,342, up 3.50 percent. Lee's preliminary sheet shows the same shape, with just value at $217,727,315,012 against $219,933,150,320 and taxable value at $156,343,845,669 against $149,554,341,739, though the two Lee sheets are different vintages and the comparison is looser.

The mechanism is recapture. Section 193.155(1) caps the annual increase in a homestead's assessed value at the lower of 3 percent or the change in the consumer price index, and section 193.1555(3) caps non-homestead property at 10 percent. Through the 2021 and 2022 surge, market values ran far ahead of those ceilings, so assessed values were held down and a gap opened. That gap does not disappear when the market cools. Assessed value keeps climbing toward market value at the capped pace until the two meet. A falling market and a rising tax bill are the same event, several years apart.

It also means the rate cuts of the last four years bought less than they appear to have. Comparing the 300 Collier millage areas present in both 2021 and 2025, the total adopted rate fell in 299 of them and rose in one, with a median decline of 0.9415 mills from a 2021 median of 11.4183. Rates went down almost everywhere in Collier. Bills did not.

What does the payment date change?

Four percent, which is a better return than it looks.

Section 197.162(1) sets the discount at 4 percent in November, 3 percent in December, 2 percent in January, 1 percent in February and zero in March. On the $5,264.57 median Lee bill above, paying in November rather than March saves $210.58. The delinquency date is 1 April.

That is a 4 percent discount for paying four months early, which annualises to something no savings account in this rate environment will match. It is also the single largest discretionary variable an owner has over the bill, given that the assessment is set by the appraiser, the exemptions are set by statute and the rates are set by fourteen bodies that will not be consulting them.

Questions readers ask

What is a mill? One mill is one dollar of tax per $1,000 of taxable value. A rate of 14.6810 mills is 1.46810 percent of taxable value, though not of market value: on the worked example above, a 14.6810 mill rate produces an effective 1.053 percent of just value, because the assessment cap and the exemptions sit between the two.

Is the Save Our Homes cap 3 percent? It is the lower of 3 percent or the change in the consumer price index, under section 193.155(1). In a low inflation year the cap is below 3 percent. The 2.9 percent index change that set the 2025 exemption adjustment is the same measure.

Does the homestead exemption reduce school taxes? The first $25,000 does. The additional exemption, $25,722 for 2025 and $26,411 for 2026, does not, by the express terms of section 196.031(1)(b).

Where do I find my own rate? From the property appraiser's tax district or millage area for the parcel, not from a county average. Lee publishes the full set as a millage book and Collier publishes it as a downloadable file, and both are linked in the data table accompanying this piece.

Why did my neighbour's bill differ from mine on an identical house? Most often because one of you bought more recently. Section 193.155(3) reassesses at just value in the year following a change of ownership, which resets the cap and erases the accumulated difference between assessed and market value in a single step.