How much will my property taxes increase after buying a home in Florida?

The county's just value estimate typically moves toward the purchase price the January after closing, though the appraiser sets it independently using comparable sales rather than copying the contract price exactly, and it is then reduced by the buyer's own homestead exemption once they establish residency.

Does Florida property tax portability apply if I'm moving to a different county?

Yes. Portability works statewide across all 67 Florida counties, so you can move from one county to another and still transfer your Save Our Homes benefit.

Can I use property tax portability more than once in Florida?

Yes, there is no lifetime limit on using portability, as long as you meet the homestead and timing rules for each move.

What happens to portability if my new home is worth less than my old home?

You still receive a benefit, but it's prorated based on the new home's value relative to the old home's value rather than a full dollar-for-dollar transfer.

What is the deadline to file for Florida property tax portability?

You must establish your new homestead within three tax years of abandoning your prior homestead, and file Form DR-501T along with your homestead exemption application by March 1.

The One Florida Tax Quirk Every Buyer and Seller Should Plan Around

Q: Why is the property tax figure on my loan estimate different from what I'll actually pay in Florida?

Lenders estimate taxes using the most recent available tax bill, usually the seller's current capped bill, which can be well below what the buyer's bill becomes once the county reassesses the property to the purchase price.

Florida property taxes work a little differently than most states — and once you understand the one rule behind it, it's completely manageable. Here's the plain-English version, for whichever side of the move you're on.

I'm buying a home I'm selling & moving up

For Buyers

Your Tax Bill Will Likely Be Higher Than the Seller's — Here's Why, and How Much

This is a normal, well-understood part of buying in Florida — not a red flag, just something worth knowing before you fall in love with a listing's tax line. Florida's Save Our Homes provision limits how much a homesteaded owner's assessed value can rise each year, capped at 3% or the change in the Consumer Price Index, whichever is lower. A home's real market value might climb 8-10% in a hot year, but the current owner's taxable assessment doesn't.

Over enough years, that creates a gap between what a home is worth and what its owner is actually taxed on. If you're buying from a longtime owner, the tax bill you see on the listing or loan estimate reflects their capped number — not the number you'll eventually pay.

The size of that gap depends almost entirely on how long the seller has owned the home. A seller who bought two years ago has barely any gap at all — your bill will be close to theirs. A seller who's owned the home 15+ years may have a meaningfully larger one. There's no guessing required — I can pull the property record and tell you which situation you're in within a few minutes.

What actually happens: the year after you close, the county property appraiser resets the assessment to "just value" — their own independent market value estimate for the property, based on comparable sales and appraisal methodology, not simply a copy of your contract price. A recent sale is strong evidence they weigh heavily, but the appraiser's number can land above or below what you actually paid. I like to pull the county's public assessment data with you before you write an offer, so you have a realistic ballpark instead of a surprise — your official number always comes from the county property appraiser, not from me.

Buying a $450,000 home from an owner who's had it about 7 years

Detail	Amount
Purchase price / new market value	$450,000
Seller's assessed value (capped for ~7 years)	$370,000
Seller's tax bill shown at closing (~2% effective rate)	≈ $7,400/yr
Your assessed value the first January after closing (county's "just value" estimate)	≈ $450,000
Your real tax bill once reassessed	≈ $9,000/yr

Illustrative only — the county sets "just value" using its own market analysis, not your literal purchase price, so your actual number can land above or below this. Actual millage rates and your own homestead exemption (once you establish residency) will also adjust this. A longer-owned home would show a bigger gap; a recently-purchased one, a much smaller one. I'll pull the public county data with you before you write an offer so you have a realistic ballpark — your county property appraiser has the official figure.

That gap is exactly why a good pre-approval doesn't just repeat the seller's tax line — it factors in a realistic, publicly-sourced estimate so your monthly payment doesn't move on you later. I'm not a tax advisor, so I'll always point you to the county property appraiser or a tax professional for your official figure — but I can make sure you're working from a realistic ballpark instead of the seller's old bill when you decide.

For Sellers & Move-Up Buyers

Portability: Taking Your Tax Cap With You

Since 2008, Florida law has allowed homeowners to transfer — or "port" — their accumulated Save Our Homes benefit from a sold homestead to a new Florida homestead, up to a maximum of $500,000.

It doesn't reduce your new home's market value. It reduces the assessed value your property taxes are calculated on — which is the number that actually drives your monthly escrow payment.

$500,000Maximum portable benefit

3 tax yearsWindow to establish new homestead

March 1Filing deadline (Form DR-501T)

If you're moving up (new home costs more)

You transfer your full accumulated benefit, up to the $500,000 cap. Dollar for dollar.

If you're downsizing (new home costs less)

You transfer a proportional share — roughly the same percentage of your benefit as your new home's value is to your old home's value. The county property appraiser runs the final calculation, but the short version: you still keep most of what you built, even in a smaller home.

A Real-Numbers Example

Moving up from a $450,000 home to a $600,000 home

Detail	Amount
Current home market value	$450,000
Current home assessed value (after years under the cap)	$280,000
Save Our Homes benefit (the gap)	$170,000
New home market value	$600,000
New home assessed value without portability	$600,000
New home assessed value with portability ($600,000 − $170,000)	$430,000
Estimated annual tax savings (at a ~2% effective rate)	≈ $3,400/yr

Illustrative only — actual millage rates vary by county and taxing district. I'll walk through the public portability data with you when we talk — your county property appraiser calculates the official transfer amount.

That's not a one-time savings. It lowers your assessed value going forward, which lowers your monthly escrow, which is real money back in your housing budget every single month for as long as you own the new home.

How to Actually Do It

Confirm you had homestead on your prior FL home. Portability only applies if the home you're leaving carried a homestead exemption — and that exemption has to be relinquished (no one else can keep claiming it) before you can port any of the benefit.
Close on your new home and establish it as your homestead. You have up to three tax years from when you gave up your old homestead to establish the new one — but the sooner, the better, since you can't port a benefit you haven't re-established yet.
File Form DR-501T with your county property appraiser. This is the "Transfer of Homestead Assessment Difference" form. File it alongside your new homestead exemption application.
Meet the March 1 deadline. Miss it, and you may need to petition the Value Adjustment Board and show good cause — success isn't guaranteed. Filing on time is far simpler.
Let your lender factor it into your loan. A portability-adjusted tax estimate changes your real monthly payment and escrow — which is where I come in. I build a realistic estimate into your pre-approval so there are fewer surprises at closing, though your county property appraiser's office confirms the actual portability amount.

Check the Official Numbers: A Few Central Florida Counties

The honest answer to "what will my number actually be" is: the county property appraiser is the only office that can tell you for certain — and several of them offer free online tools that get you far closer than any rule of thumb. Florida has 67 counties, each with its own appraiser's office; here are official links for a few in the Central Florida area to get you started. If yours isn't listed, a quick search for "[your county] property appraiser" will get you to the right place.

Orange Countyocpafl.org — Tax Estimator tool

Seminole Countyscpafl.org — Portability calculator

Lake Countylakecopropappr.com — Tax Estimation Calculator

Osceola Countyproperty-appraiser.org — Tax Estimator

Polk Countypolkflpa.gov — Tax Estimator

Worth knowing: even these official calculators come with real limits. Lake County's own estimator, for example, states outright that it doesn't factor in portability and that their office won't give verbal or written portability estimates, because too many variables affect the outcome. That's not a gap in this page — it's the honest state of things. These tools are the best starting point, but your final figure comes only after you file, when the property appraiser calculates it directly.

Common Questions

Why is the tax figure on my loan estimate different from what I'll actually pay?

Lenders are required to estimate your taxes using the most recent available tax bill — usually the seller's current, capped bill. If the seller has owned the home a long time, that number can be well below what your bill will be once the county reassesses the property to your purchase price. It's not an error; it's just based on the best data available at the time, so it's worth asking your lender to also show you a reassessed estimate.

How much will my property taxes really be after I buy?

As a rule of thumb, expect the county's "just value" estimate to move toward your purchase price the January after closing — sale price is strong evidence the appraiser weighs, but they set the number independently using their own comps and methodology, so it can land above or below what you paid. From there it's reduced by your own homestead exemption once you establish residency. I can pull the public property record and walk through a realistic range with you before you make an offer, so your budget reflects reality rather than the seller's old bill — for your official figure, the county property appraiser's office always has the final word.

I'm a first-time buyer with no home to port from — is there anything I can do?

Portability only applies if you're transferring savings from a prior Florida homestead, so it won't help a first-time buyer directly. What will help is filing for your own homestead exemption as soon as you close and qualify — it reduces your taxable value and starts your own Save Our Homes cap going forward, protecting you from these same jumps in future years.

Does portability apply if I'm moving to a different county?

Yes. Portability works statewide across all 67 Florida counties — you can move from one end of the state to the other and still transfer your benefit.

Can I use portability more than once?

Yes, there's no lifetime limit. Each time you sell one Florida homestead and establish a new one, you can port again, as long as you meet the timing and filing requirements each time.

What if my new home is worth less than my old one?

You still benefit — the portable amount is prorated based on your new home's value relative to your old one, rather than transferring the full dollar amount.

Does this affect my mortgage approval or payment?

It affects your monthly payment, not your approval directly — but it matters a lot for how your payment is calculated. Property taxes are usually escrowed into your monthly mortgage payment, so a lower assessed value means a lower monthly payment. I factor your realistic, portability-adjusted tax estimate into your pre-approval so the number you see up front is the number you'll actually pay.

Is anything about this changing in 2026?

There are Florida ballot measures on the November 2026 ballot that could change parts of the property tax system, but none of them take effect before January 1, 2027, and none eliminate the $500,000 portability cap as of today. If you're timing a move around this, it's worth a quick conversation so I can walk you through where things stand.

Let's Walk Through What to Expect

Whether you're buying your first Florida home or porting years of savings into your next one, every county and every homestead history is different. I'll pull the public data with you and build a realistic ballpark into your pre-approval so you're not budgeting off the seller's old bill.

Get a Ballpark Estimate

This page is for general educational purposes and isn't tax or legal advice, and I'm not a tax advisor. Any figures discussed are estimates based on publicly available data, not official calculations. Assessed values, portability amounts, and final tax bills are determined solely by your county property appraiser — always confirm your specific numbers with their office or a qualified tax professional before making financial decisions.