Sell a Florida homestead you have owned for fifteen, twenty, or thirty years, and the Save Our Homes cap that kept its taxable assessment below market value ends with the sale. The home is reassessed at full value the following January 1. Portability is the mechanism that lets you carry some or all of that accumulated benefit to your next Florida homestead. Three things decide how much moves. It applies only within Florida. It is capped at $500,000. And the amount that actually transfers depends on a formula that runs one way when you move up in value and another when you move down. A filing deadline sits on top of all three.
This is a description of published Florida Department of Revenue rules and state statute, not tax advice. What any of it means for your specific homestead is a question for your county property appraiser and your own tax adviser, and every figure below is the state's, not ours.
What Happens to Your Homestead Exemption the Day You Sell
A sale is a change of ownership, and Florida law defines that broadly: any sale, foreclosure, or transfer of legal or beneficial title to any person 1. Once that happens, the property loses its Save Our Homes benefit and is reassessed at just value on the following January 1 12. The gap you have watched grow for decades between the assessed value on your tax bill and what the home would actually sell for closes on that date, for the property, not for you.
That reassessment is what your buyer inherits, not what you owe. Nothing in this section is a bill to you; it is the reason the tax line on your own listing, and on every home you tour next, reflects the seller's history rather than a stable, predictable number.
Not every change in title resets the clock. Florida law lists specific transfers that do not trigger this reassessment: a change or transfer between spouses, certain transfers upon death, transfers where the same persons are entitled to the homestead exemption both before and after, and transfers made to correct an error 2. A sale to a buyer outside those categories is exactly the change of ownership described above, and it is the one that does trigger reassessment.
Because Florida assesses property as of January 1 each year, the tax bill for the calendar year in which you actually close is still based on your capped assessment from that preceding January 1. The higher, reassessed bill does not begin until the January 1 that follows your sale 12. Sellers sometimes assume disclosing this protects them from a negotiation over it; more often, walking a buyer through the actual mechanics, rather than letting them assume the current bill is permanent, prevents a misunderstanding from surfacing at the closing table instead of during a showing.
What Portability Actually Transfers
The Save Our Homes benefit is the accumulated difference between a homestead's assessed value and its just, or market, value 12. Portability lets most Florida homestead owners transfer, or "port," all or part of that difference to a new Florida homestead, which lowers the new home's assessment and, in turn, its tax bill 2.
The Department's own language, "most" Florida homestead owners, reflects a handful of edge cases where the transfer does not apply: a homestead abandoned outside the three-year window described below, or a change of ownership that never results in a new permanent residence being established at all 2. For an owner moving directly from one qualifying Florida homestead to the next inside that window, portability is the rule rather than the exception.
The detail that decides whether it applies to you at all is that both the old and the new homestead must be in Florida 2. If you are staying in the state, which is the common case for an owner right-sizing along this coast, portability is available. If you are leaving Florida entirely, there is no Florida homestead to port to, and this whole mechanism does not apply.
You also do not have to buy your next Florida home the same week you sell the last one. The three-year window described below gives a right-sizing owner room to sell first, search deliberately, and close on a replacement homestead later, without losing the benefit built up over decades, as long as the new homestead exemption is established inside that window 2.
The Downsizing Math: Moving to a Lower-Value Home
Right-sizing after decades in a larger waterfront or barrier-island home, whether in Melbourne or elsewhere along this coast, usually means moving to something smaller, and the statute has a specific formula for that direction. When the new homestead's just value is lower than the prior homestead's, the new assessed value equals the new home's just value, divided by the prior home's just value, multiplied by the prior home's assessed value 3.
- Prior homestead: just value $2,000,000, assessed value $700,000 (a $1,300,000 Save Our Homes benefit)
- New, smaller homestead: just value $1,200,000
- New assessed value: $1,200,000 divided by $2,000,000, times $700,000, equals $420,000
Those are illustrative round numbers to show how the formula works, not a projection of what any specific home is worth or what any specific owner would pay. The same statute caps this transfer: if the gap between the new home's just value and its calculated assessed value would exceed $500,000, the assessed value is adjusted up so that gap equals exactly $500,000 3. In the example above, the gap is $780,000, which the cap would reduce to $500,000, an assessed value of $700,000 rather than $420,000. Whether the cap applies to your actual numbers is a calculation for your county property appraiser.
It is tempting to assume the same dollar benefit simply moves with you regardless of price. It does not. Because the transfer is proportional to the new home's just value relative to the old one, a homestead worth roughly sixty percent of the prior home's value carries roughly sixty percent of the prior dollar benefit forward, before the $500,000 cap is even considered 3.
The Upsizing Math: Moving to a Higher-Value Home
Some owners right-size into a different kind of home rather than a smaller one, on a smaller lot, in a different setting, still at a higher price point. For that direction, the new assessed value equals the new home's just value, minus the lesser of $500,000 or the prior homestead's accumulated Save Our Homes difference 3.
- Prior homestead: just value $2,000,000, assessed value $700,000 (a $1,300,000 benefit)
- New, higher-value homestead: just value $3,000,000
- The lesser of $500,000 or $1,300,000 is $500,000
- New assessed value: $3,000,000 minus $500,000, equals $2,500,000
The $500,000 figure is a flat constitutional cap, not a percentage, and it is the same cap in both directions 34. Above a certain accumulated benefit, which a home held fifteen to thirty years on this coast can genuinely reach, the cap rather than the full benefit is what actually governs the transfer.
This is the direction that surprises owners moving to a different kind of home at a higher price point. The cap means the accumulated benefit itself has a ceiling. A homestead held long enough to build a benefit above $500,000 ports only the first $500,000 of it, not the full balance, when moving to a higher-value replacement 34.
“Portability moves the benefit you built over decades. It does not move automatically, it does not cross a state line, and past $500,000 it does not move in full.”
The Deadline to Establish Your New Homestead
The Department of Revenue is explicit on the timing, and it is the detail most often misread: you must establish the homestead exemption on the new home within three years of January 1 of the year you abandoned the old homestead, not three years after the closing date of the sale 2.
- File the Transfer of Homestead Assessment Difference, Form DR-501T, together with the homestead exemption application, Form DR-501, with your county property appraiser [2].
- The filing deadline for both is March 1 [2].
- If the property appraiser denies the application, a petition can be filed with the county's value adjustment board [2].
That same appeal path applies whether the dispute is over the base exemption or over the portability transfer amount itself 2.
This page describes the general portability rule under s. 193.155(8). Additional exemptions exist under separate statutory provisions not covered here, and are worth raising with your property appraiser directly if you think any apply.
What Your Buyer's Tax Bill Looks Like After the Sale
This is a question buyers ask during showings, and the honest answer is that the seller's low tax bill does not transfer with the house. Once your homestead is reassessed at just value the following January 1 1, your buyer starts from that reassessed number, then applies whatever homestead exemption they qualify for on their own timeline.
The base homestead exemption under Florida law is up to $25,000 off assessed value for all levies, including school taxes 5. On top of that, an additional exemption of up to $25,000 applies to assessed value over $50,000, and only to non-school taxes. That additional exemption is adjusted annually on January 1 for inflation by the change in the Consumer Price Index, where that change is positive 6. A buyer only receives that exemption once they make the home their permanent residence by January 1 and file Form DR-501 by March 1 of that tax year 6. In the meantime, and permanently if they never apply, the home is taxed on its full reassessed value.
If the Home Sits Vacant or Becomes a Rental Before Closing
An owner who has already moved into a new Florida home before selling the old one, which is common in a right-sizing move, should know that homestead eligibility on the old property does not survive that transition intact. Florida law is direct: you are no longer eligible for the homestead exemption if the residential unit is rented, if it is no longer your permanent home, or if you are no longer a permanent Florida resident 6.
That timing question, exactly when the old home stops being your homestead and what that does to this year's assessment, is one to raise with your county property appraiser before listing rather than after, since it can affect both the current tax bill and the window for filing portability on the new home.
Property appraisers evaluating a new homestead application also look for concrete residency evidence: a Florida driver's license or identification card, voter registration, a declaration of domicile, and utility bills at the new address are among the specific items the Department lists 6. Establishing that evidence soon after a move is what keeps the March 1 filing deadline from becoming a last-minute scramble.
The mechanics here are consistent enough to describe in general. The numbers on your specific homestead, and the deadlines that apply to your specific closing date, belong with your county property appraiser and your own tax adviser. If the reason for the move is the size of the gain rather than the size of the house, capital gains tax on selling a Florida second home covers the federal side. If you are buying into Florida for the first time rather than moving within it, the mechanics are different again, and they are covered in Florida's homestead rules for a relocating buyer. For a plain look at what actually sets a coastal property's value before any of this math applies, see how waterfront homes are valued in Florida. When you are ready to talk through the move itself, our seller representation starts with a conversation, not a commitment.
Sources
- Florida Statutes s. 193.155(3), F.S.: change of ownership defined; reassessment at just value the following January 1
- Florida Department of Revenue, PT-112: Save Our Homes Assessment Limitation and Portability Transfer (accumulated benefit, three-year deadline, Forms DR-501T/DR-501, March 1 filing deadline)
- Florida Statutes s. 193.155(8)(b), F.S.: portability transfer formula when the new homestead's just value is lower than the prior homestead's (downsizing), and the $500,000 cap
- Florida Constitution, Article VII, Section 4(8): $500,000 limit on the portability transfer
- Florida Statutes s. 196.031, F.S.: base homestead exemption amounts
- Florida Department of Revenue, PT-113: Property Tax Information for Homestead Exemption (exemption examples, January 1/March 1 filing rule, loss of eligibility when rented or no longer a permanent residence)


