All Florida countiesBased on the 2026 certified tax roll
Seminole CountyAmendment 3Tax Calculator
Property search and homestead exemption estimates
All Florida countiesBased on the 2026 certified tax rollAn estimate of how Amendment 3's larger homestead exemption could change Seminole County government's ad valorem property tax revenue, based on 2026 property values and final 2026 tax rates.
Illustrative estimates only. These figures are meant to illustrate how Amendment 3 could affect Seminole County government based on current data. They are not official. For official information about the county's budget, tax rates and revenue, contact Seminole County government directly. For official property values and exemptions, contact the Seminole County Property Appraiser.
This page covers the three operating property taxes Seminole County government levies in the final 2026 millage table, grouped by where they apply: the countywide levy (5.3751 mills, paid throughout Seminole County, inside and outside cities); the fire MSTU (2.7649 mills, paid in parts of unincorporated Seminole County and in the cities of Altamonte Springs, Casselberry and Winter Springs); and the road MSTU (0.1107 mills, paid in parts of unincorporated Seminole County).
Paid on taxable property throughout Seminole County, inside and outside cities. Estimated change by 2028: −$75.2 million (−25.9%). Homestead assessed values rise by up to 3% a year (never above each home's just value); all other property stays at its 2026 taxable value.
| Year | Homestead taxable value | Other taxable value | Total taxable value | Gross levy | Budget basis (95%) | Change from 2026 (95%) | Percent change |
|---|---|---|---|---|---|---|---|
| 2026 | $24,337,727,194 | $32,479,877,035 | $56,817,604,229 | $305,400,304 | $290,130,289 | — | — |
| 2027 (estimate) | $15,789,541,991 | $32,479,877,035 | $48,269,419,026 | $259,452,954 | $246,480,306 | −$43,649,983 | −15.0% |
| 2028 (estimate) | $9,609,458,638 | $32,479,877,035 | $42,089,335,673 | $226,234,388 | $214,922,669 | −$75,207,620 | −25.9% |
| Year | Homestead taxable value | Other taxable value | Total taxable value | Gross levy | Budget basis (95%) | Change from 2026 (95%) | Percent change |
|---|---|---|---|---|---|---|---|
| 2026 | $24,337,727,194 | $32,479,877,035 | $56,817,604,229 | $305,400,304 | $290,130,289 | — | — |
| 2027 (estimate) | $15,138,930,268 | $32,479,877,035 | $47,618,807,303 | $255,955,851 | $243,158,059 | −$46,972,231 | −16.2% |
| 2028 (estimate) | $8,624,377,365 | $32,479,877,035 | $41,104,254,400 | $220,939,478 | $209,892,504 | −$80,237,785 | −27.7% |
Paid on 128,853 parcels in parts of unincorporated Seminole County and in the cities of Altamonte Springs, Casselberry and Winter Springs. Estimated change by 2028: −$28.6 million (−27.4%). Homestead assessed values rise by up to 3% a year (never above each home's just value); all other property stays at its 2026 taxable value.
| Year | Homestead taxable value | Other taxable value | Total taxable value | Gross levy | Budget basis (95%) | Change from 2026 (95%) | Percent change |
|---|---|---|---|---|---|---|---|
| 2026 | $18,656,124,609 | $21,104,966,920 | $39,761,091,529 | $109,935,442 | $104,438,670 | — | — |
| 2027 (estimate) | $12,337,185,478 | $21,104,966,920 | $33,442,152,398 | $92,464,207 | $87,840,997 | −$16,597,673 | −15.9% |
| 2028 (estimate) | $7,755,482,301 | $21,104,966,920 | $28,860,449,221 | $79,796,256 | $75,806,443 | −$28,632,227 | −27.4% |
| Year | Homestead taxable value | Other taxable value | Total taxable value | Gross levy | Budget basis (95%) | Change from 2026 (95%) | Percent change |
|---|---|---|---|---|---|---|---|
| 2026 | $18,656,124,609 | $21,104,966,920 | $39,761,091,529 | $109,935,442 | $104,438,670 | — | — |
| 2027 (estimate) | $11,833,387,221 | $21,104,966,920 | $32,938,354,141 | $91,071,255 | $86,517,693 | −$17,920,977 | −17.2% |
| 2028 (estimate) | $6,979,361,772 | $21,104,966,920 | $28,084,328,692 | $77,650,360 | $73,767,842 | −$30,670,827 | −29.4% |
Paid on 89,305 parcels in parts of unincorporated Seminole County. Estimated change by 2028: −$841,300 (−28.7%). Homestead assessed values rise by up to 3% a year (never above each home's just value); all other property stays at its 2026 taxable value.
| Year | Homestead taxable value | Other taxable value | Total taxable value | Gross levy | Budget basis (95%) | Change from 2026 (95%) | Percent change |
|---|---|---|---|---|---|---|---|
| 2026 | $14,590,762,785 | $13,246,978,853 | $27,837,741,638 | $3,081,638 | $2,927,556 | — | — |
| 2027 (estimate) | $10,040,858,379 | $13,246,978,853 | $23,287,837,232 | $2,577,964 | $2,449,065 | −$478,491 | −16.3% |
| 2028 (estimate) | $6,590,617,673 | $13,246,978,853 | $19,837,596,526 | $2,196,022 | $2,086,221 | −$841,335 | −28.7% |
| Year | Homestead taxable value | Other taxable value | Total taxable value | Gross levy | Budget basis (95%) | Change from 2026 (95%) | Percent change |
|---|---|---|---|---|---|---|---|
| 2026 | $14,590,762,785 | $13,246,978,853 | $27,837,741,638 | $3,081,638 | $2,927,556 | — | — |
| 2027 (estimate) | $9,640,816,906 | $13,246,978,853 | $22,887,795,759 | $2,533,679 | $2,406,995 | −$520,561 | −17.8% |
| 2028 (estimate) | $5,953,527,378 | $13,246,978,853 | $19,200,506,231 | $2,125,496 | $2,019,221 | −$908,335 | −31.0% |
As with the cities and towns, the size of the change depends mostly on how much of the taxable value comes from homesteads. Property without a homestead exemption, such as rentals, businesses, second homes and vacant land, keeps its taxable value under the amendment.
Countywide, homesteads make up 42.8% of the taxable value for the countywide levies in 2026. Within the fire MSTU area, they make up 46.9%, so the estimated percentage change for that levy is larger. Among the seven cities that levy a property tax, the homestead share ranges from 19.6% to 57.4%.
The table below shows where the change in the countywide taxable value comes from. Unincorporated Seminole County has 49.2% of the county's taxable value and accounts for an estimated 54.5% of the change. The City of Sanford has 11.5% of the county's taxable value and accounts for an estimated 8.3% of the change.
| Area | County taxable value, 2026 | Share of county taxable value | Homestead share of area's taxable value | Change in area's taxable value by 2028 | Share of countywide change |
|---|---|---|---|---|---|
| Unincorporated Seminole County | $27,941,099,251 | 49.2% | 52.4% | −28.7% | 54.5% |
| City of Sanford | $6,549,790,790 | 11.5% | 22.7% | −18.6% | 8.3% |
| City of Altamonte Springs | $5,259,914,008 | 9.3% | 19.6% | −15.7% | 5.6% |
| City of Oviedo | $4,563,206,375 | 8.0% | 51.4% | −31.5% | 9.8% |
| City of Winter Springs | $3,979,818,750 | 7.0% | 57.4% | −36.4% | 9.8% |
| City of Lake Mary | $3,647,327,013 | 6.4% | 32.5% | −18.5% | 4.6% |
| City of Casselberry | $2,683,617,133 | 4.7% | 28.0% | −23.3% | 4.3% |
| City of Longwood | $2,192,830,909 | 3.9% | 27.7% | −21.6% | 3.2% |
Estimates use homestead assessed values rising by up to 3% a year, capped at just value. Areas are based on each parcel's tax district.
Florida counties also receive money from other sources. Depending on the county, these can include state revenue sharing, the local government half-cent sales tax, local option sales and fuel taxes, communications services taxes, non-ad valorem assessments, franchise fees, charges for services, and state and federal grants. The mix differs from county to county. Seminole County's adopted budget shows its full set of revenue sources and how much each provides.
The water management district and the School Board levy their own property taxes. They are separate taxing authorities and are not included on this page.
Property values and exemptions: The Seminole County Property Appraiser's 2026 final tax roll, as published by the Florida Department of Revenue. Tax rates: the Property Appraiser's final 2026 millage rates by taxing authority. Parcel tax districts: the taxing authority codes on the same tax roll.
For each homestead, the estimated taxable value is its assessed value minus the new homestead exemption ($150,000 in 2027, $250,000 in 2028) and any other exemptions, but not less than zero. The gross levy is total taxable value times the millage rate, for the parcels where each levy applies. The budget basis is 95% of the gross levy.
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