Rules reviewed October 27, 2026. The worked examples use verified 2026 exemption amounts and hypothetical rates. They are not forecasts of 2027 tax bills.
To estimate Florida property taxes after buying a house, start with the property’s expected assessed value after the sale, subtract the exemptions the buyer qualifies for, apply each taxing authority’s millage rate, and add non-ad valorem assessments. Calculate school and nonschool taxes separately. The seller’s last bill is useful background, but it can understate the buyer’s future cost.
Key takeaways
- An ordinary purchase generally triggers reassessment to just value on January 1 of the following year, subject to statutory exceptions.
- Just value is the property appraiser’s valuation. It is not automatically the purchase price.
- For qualifying, sufficiently valued homesteads in 2026, the standard exemption is $25,000 against school taxes and up to $51,411 against nonschool taxes.
- County estimators help check the calculation, but future values, rates and parcel charges can change.
- Annual taxes divided by 12 provide a monthly budgeting figure, not a complete mortgage payment or guaranteed escrow collection.
Why the seller’s tax bill can mislead a buyer
A long-term owner may have an assessed value well below the home’s market value. Florida’s Save Our Homes assessment limitation restricts annual increases for eligible homesteads. That accumulated assessment benefit does not simply transfer from seller to buyer in an ordinary sale.
The Florida Department of Revenue’s homebuyer property-tax guide explains why a new owner’s taxes can differ substantially from the previous owner’s bill. The purchase-year bill may still reflect the seller’s assessment and exemptions. The next calendar year’s assessment is the more useful starting point for an ongoing ownership budget.
A seller’s low bill therefore answers a historical question: what was charged under the previous assessment? It does not establish what the buyer will owe after reassessment. Conversely, a purchase does not guarantee a tax increase. Market values, the buyer’s exemptions, eligible portability and local rates all affect the result.
When taxes change after a purchase
For homestead property, Florida Statutes section 193.155 generally resets the assessment to just value on January 1 following a change of ownership. Section 193.1554 provides a corresponding ownership-change rule for nonhomestead residential property covered by that section. Exceptions exist, so transfers involving spouses, trusts or other special circumstances require a separate review.
For example, a buyer who closes in October 2026 should prepare a distinct estimate for the 2027 tax year. The 2026 bill and the settlement’s tax proration address a different period. They should not be carried forward unchanged as the long-term budget.
Homestead eligibility generally depends on ownership and permanent residence as of January 1. March 1 is the regular application deadline. Buyers can use MFR’s homestead application guide to prepare the filing, then confirm requirements with the county property appraiser. A buyer should not assume the seller’s application covers the new ownership.
The annual assessment limitation also needs the right starting point. It does not prevent the initial post-sale reset. Qualifying buyers may instead have a separate benefit to transfer from their own former Florida homestead.
A pending change for 2027 budgets
As of October 27, 2026, Amendment 3 is a proposal on the November 3 ballot, requiring at least 60 percent approval. If adopted, it would take effect January 1, 2027 and increase the nonschool homestead exemption to up to $150,000 in 2027 and $250,000 in 2028. The school exemption would remain $25,000.
The official ballot summary provides a different timetable for people who are not Florida residents on December 31, 2026: the increased exemption would begin in their fifth year of exemption, to the extent permitted by the U.S. Constitution. The Miami-Dade estimator disclosures warn that its amendment projections assume eligibility and do not verify residency. Keep those projections separate from the current-law examples below. See MFR’s Amendment 3 coverage for the proposal’s wider context.
Estimate the next full tax year in five steps
1. Identify the parcel and taxing district
Find the address in the county property appraiser’s records and confirm the parcel or folio number. Save the current property record and tax bill. Check that the record describes the property being purchased, including the land, improvements and any recently completed construction.
List the taxing authorities shown for that parcel. A countywide rate alone may exclude municipal or special-district levies. Two homes in the same county can have different combined rates, so a county average is a weak substitute for an address-specific estimate.
2. Estimate assessed value and check portability
Distinguish three figures. Just value is the appraiser’s market valuation. Assessed value reflects applicable assessment limitations or adjustments. Taxable value is assessed value after the exemptions applicable to a particular levy. The Palm Beach County Property Appraiser’s explanations describe these distinctions.
Use the county estimator’s instructions for a proposed purchase or value input. Keep the purchase price and assumed assessed value visible in the worksheet as separate fields, even if the initial estimate uses the same number. This prevents an assumption from being mistaken for an official valuation.
A qualifying buyer may transfer some or all of the Save Our Homes assessment difference. Eligibility requires a homestead exemption as of January 1 of one of the three immediately preceding years. Transfers are capped at $500,000, with a proportional calculation when moving to a lower-value homestead. Chapter 2026-239, sections 3 and 4, specifies the immediate prior homestead as the reference beginning with the 2027 tax roll. Review MFR’s homestead portability guide and ask the receiving county to confirm eligibility and the transferable amount. Do not subtract the seller’s assessment difference or assume the maximum transfer applies.
3. Separate school and nonschool taxable values
The standard homestead exemption does not reduce every levy by the same amount. Under section 196.031, the base exemption is up to $25,000. The additional exemption applies to qualifying assessed value above $50,000 and excludes school district levies.
The Department of Revenue’s 2026 inflation-adjustment table sets that additional amount at $26,411. For the sufficiently valued homesteads modeled below, the combined nonschool exemption is $51,411. The school exemption remains $25,000.
The full $26,411 additional exemption requires at least $76,411 of assessed value. These amounts should not be applied indiscriminately to lower-value properties or owners who do not qualify. Other exemptions may also apply differently across taxing authorities. For a specific parcel, use the exemptions actually available to that buyer and that levy.
4. Apply millage and add other assessments
One mill is $1 per $1,000 of taxable value. For each levy, multiply taxable value by the millage rate and divide by 1,000. Then add the results.
Annual estimate = school taxes + nonschool taxes + non-ad valorem assessments.
Non-ad valorem assessments are not calculated from taxable property value. Check the parcel for applicable service or special-district charges and confirm whether the estimator includes them. An exemption from value-based taxes does not automatically remove these charges.
Record the year of every rate and assessment used. A current-year calculator can be a practical planning reference, but it cannot lock in next year’s tax rates, valuation or charges.
5. Convert the annual total into a monthly budget
Divide the estimated annual bill by 12. Keep this tax amount separate from principal and interest, insurance, association dues and other ownership costs. If the lender’s payment estimate already includes property taxes, do not add the same expense twice.
Use two worksheet columns: the amount currently being collected and the estimate for the next full tax year. A difference between the columns identifies a budgeting issue worth discussing with the servicer. It does not, by itself, establish the amount of an escrow shortage.
Official estimators for Miami-Dade, Broward and Palm Beach
Use the official county tool for the address. Retain a dated copy of the inputs and result so later changes can be explained.
| County | Official tool | What to verify |
|---|---|---|
| Miami-Dade | Property tax estimator | Parcel, taxing district, exemption inputs, rate year and included non-ad valorem charges. |
| Broward | Property tax estimator | City and purchase-price estimate for new buyers. It excludes non-ad valorem fees; use the linked property record page for a parcel-specific estimate. |
| Palm Beach | Property tax calculator | Location, valuation inputs, applicable exemptions and the calculation’s tax year. |
Ask whether the output represents existing-owner taxes or a purchaser estimate. A calculator populated with the seller’s capped assessment can reproduce the wrong starting point for a buyer. Also check whether a displayed alternative scenario assumes a proposed law change. Keep proposed savings separate from the current-law budget.
MFR analysis: three home-value scenarios
The following calculations isolate the effect of assessed value. They use 2026 exemption amounts, an assumed school rate of 6 mills, an assumed nonschool rate of 12 mills, and $700 in annual non-ad valorem charges. Each buyer qualifies for the full standard exemptions used here and has no portability adjustment or other exemption.
These are hypothetical worksheets. They are not actual parcel studies, county tax quotes, typical local rates or forecasts for 2027. The values are assumed assessed values, not a statement that a purchase price determines the assessment.
| Calculation | Scenario A | Scenario B | Scenario C |
|---|---|---|---|
| Assessed value | $450,000 | $650,000 | $950,000 |
| School taxable value | $425,000 | $625,000 | $925,000 |
| Nonschool taxable value | $398,589 | $598,589 | $898,589 |
| School tax at 6 mills | $2,550.00 | $3,750.00 | $5,550.00 |
| Nonschool tax at 12 mills | $4,783.07 | $7,183.07 | $10,783.07 |
| Non-ad valorem charges | $700.00 | $700.00 | $700.00 |
| Annual estimate | $8,033.07 | $11,633.07 | $17,033.07 |
| Monthly tax budget | $669.42 | $969.42 | $1,419.42 |
Scenario A can be reproduced as follows: ($450,000 – $25,000) × 6 ÷ 1,000, plus ($450,000 – $51,411) × 12 ÷ 1,000, plus $700. The annual result is $8,033.068 before rounding.
Under these same assumptions, an additional $50,000 of assessed value adds $900 annually, or $75 monthly. That sensitivity applies because both taxable values rise by the full $50,000 in these examples. It illustrates how a valuation assumption changes affordability without pretending to predict the appraiser’s decision.
Closing prorations and mortgage escrow are different
A closing tax proration allocates a tax obligation between buyer and seller under the transaction’s settlement terms. Ask the closing agent which tax year, bill estimate and allocation convention were used, and whether the contract provides for a later adjustment.
An escrow account collects funds for future disbursements. The CFPB Closing Disclosure explainer distinguishes estimated monthly costs, the initial escrow deposit and adjustments between the parties. A closing credit is not a permanent reduction in annual property taxes.
The CFPB also explains that changes in taxes or insurance can change the escrow portion of a mortgage payment. For this MFR worksheet, the monthly figure includes only annual property taxes divided by 12. It excludes other amounts that may appear in the escrow payment. A fixed interest rate does not freeze those other costs.
Extra checks for new construction and second homes
For a newly built home, establish what the existing assessment actually includes. A prior bill may reflect land or an earlier stage of development. It should not be treated as the annual cost of the completed home without checking the county’s record.
Ask the property appraiser about the status of improvements and ask the relevant assessing authority about parcel-specific charges. New parcels can also have incomplete information in an online estimator. Compare the builder’s figures with the county calculation and document any excluded items.
Second homes and investment properties that do not qualify as a permanent homestead should not receive the homestead deductions used in this article’s examples. Their assessment rules need a separate review. Do not apply the homestead worksheet simply because the property is residential.
A buyer’s pre-closing checklist
- Confirm the parcel and the physical property covered by its assessment.
- Save the current tax bill, property record and dated county estimate.
- Separate purchase-year taxes from the next full calendar year’s estimate.
- Confirm the buyer’s exemptions and any transferable assessment benefit.
- Record school and nonschool taxable values and the year of the rates.
- Check whether all applicable non-ad valorem charges are included.
- Compare the monthly tax budget with the lender’s existing estimate.
- Prepare the homestead filing and review the county’s next assessment notice.
Frequently asked questions
Does the purchase price become the assessed value?
Not automatically. The county property appraiser determines just value, and the buyer’s assessed value can also depend on applicable rules such as portability.
Will the first bill after closing show the reassessment?
Not necessarily. A bill for the purchase year may still reflect the seller’s assessment; an ordinary sale generally triggers the reset on January 1 of the following year.
Can the buyer use the seller’s homestead exemption?
The seller’s filing does not replace the buyer’s application. The buyer should establish eligibility and apply with the county property appraiser for the appropriate tax year.
Why are school taxes calculated separately?
The additional homestead exemption does not apply to school district levies. Using the larger nonschool deduction against every levy would understate taxes in these examples.
Is the county calculator a guaranteed tax bill?
No. Its result depends on its inputs and available rates, values and charges, which can differ from the eventual bill.
Is the monthly tax estimate the escrow payment?
No. It is a budgeting figure for property taxes alone; actual escrow collections may also include insurance, reserves and shortage adjustments.
Does the estimate include proposed Amendment 3 savings?
No. The examples use 2026 current-law exemptions; Amendment 3 remains subject to the November 3, 2026 vote, and any increased exemption would depend on eligibility.
Sources and methodology
MFR reviewed the linked Florida Department of Revenue materials, Florida statutes, official county estimator pages and CFPB guidance on October 27, 2026. The three scenarios are original arithmetic using explicit assumptions, not a sample of purchased homes or a county comparison of actual tax burdens.
Calculations retain unrounded values until the final annual and monthly amounts are displayed to two decimal places. They exclude payment discounts, penalties, other exemptions and escrow adjustments. No 2027 exemption amount or millage rate is assumed. Buyers estimating a future year should replace the inputs when official figures become available and verify any intervening legal changes.
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Miami Finance Review produces independent editorial analysis. Figures are attributed to their sources and independently cross-checked where possible. This content is informational and is not investment, legal, tax or lending advice.
