Portability election for property taxes: how to file it correctly

Last updated 2026-07-10

What is portability in property taxes?

Portability is a Florida property tax benefit that lets you carry your built-up Save Our Homes (SOH) cap savings to a new home when you sell and buy. No other state does it quite the same way. California has Proposition 19, and a handful of states run narrow senior-only transfer programs, but nothing federal exists and nothing matches Florida's dollar limits.

Here's the background you need. Florida's Save Our Homes amendment, passed by voters in 1992 and written into Article VII, Section 4 of the Florida Constitution, caps annual assessment increases on a homestead at 3% or the change in the Consumer Price Index, whichever is lower ^[1]. Live in a house long enough and its market value climbs far above the number you're actually taxed on. That gap between taxable assessed value and market value is your SOH benefit, sometimes called your SOH "differential."

Portability, added by Amendment 1 in January 2008, lets you move that differential to your next homestead. The legislature capped the transferable amount at $500,000 ^[2]. If your differential is $600,000, you lose the top $100,000. If it's $180,000, all of it moves with you.

One thing most people get wrong. Portability doesn't hand you the same dollar reduction on your new home. It gives you a proportional reduction based on the ratio of your old home's just value to your new home's just value. The math comes later in this article.

Who is eligible to file a portability election?

You have to meet every one of these conditions. Miss one and there's nothing to transfer.

You must have held a homestead exemption on your previous Florida property (the "upcapped" home). If you rented, owned without a homestead exemption, or owned commercial property, no benefit ever built up.

You must establish a new homestead exemption in Florida on the property you're moving into. Portability runs between Florida homesteads only. Move out of state and you get nothing.

You must have abandoned your previous homestead. That means you no longer qualify for or claim the exemption on the old property as of January 1 of the year you apply.

And the timing rule that trips up the most people: your previous homestead has to have been abandoned no more than two tax years before you establish the new one ^[2]. Take a long gap between selling and buying and the differential is gone. There's no waiver.

Age, income, and disability status don't factor into basic portability. Unlike the senior-only transfer programs in some other states, Florida opens this to any qualifying homeowner.

How much can you actually transfer? The portability math explained

The transfer amount is not your old differential dropped onto the new home. Florida uses a proportional formula, and the direction of your move decides how much survives.

If your new home's just value is equal to or greater than your old home's just value, you transfer 100% of your SOH differential, up to the $500,000 cap ^[2].

If your new home's just value is lower than your old home's, the transfer is prorated:

Transferable benefit = (New home's just value / Old home's just value) x SOH differential

Here's a concrete example. Your old home had a just value of $400,000 and an assessed value of $220,000, so your SOH differential was $180,000. You buy a new home with a just value of $300,000.

($300,000 / $400,000) x $180,000 = $135,000 transferred benefit.

Your new home's assessed value for SOH purposes starts at $300,000 minus $135,000, or $165,000. The homestead exemption then cuts it further.

Buy a new home worth $500,000 or more instead and you'd carry the full $180,000. The cap only bites when your differential tops $500,000.

Your county property appraiser runs this calculation once you file. Knowing the math still pays off. It tells you whether a purchase makes sense on taxes, and it lets you catch an error when the appraiser's number looks off.

How do you actually file the portability election?

You file Florida Department of Revenue Form DR-501T, "Transfer of Homestead Assessment Difference," with the property appraiser in the county where your NEW home sits ^[3]. Not the old county. The form is two pages and it costs nothing to file.

Here are the steps in order.

Step 1: Get the form. Every Florida county property appraiser has it, at the counter or on their website. The Florida Department of Revenue also hosts it at floridarevenue.com.

Step 2: Complete Part 1 about your previous homestead. Fill in the address, the county, the parcel ID (pull it from your old tax bill), and the last year you held homestead exemption on the old property.

Step 3: Complete Part 2 about your new homestead. Address and parcel ID of the new property. You have to file for homestead exemption on the new home at the same time using Form DR-501, if you haven't already ^[3].

Step 4: Sign and submit. The applicant signs, and any co-owner signs too. Submit in person, by mail, or through the county's online portal if it has one. Keep a copy. Get a stamped receipt or a confirmation email.

Step 5: The appraiser contacts your old county. The receiving county requests documentation of your old SOH differential from the sending county. You don't run this part. Follow up if you haven't heard back within 60 days.

That's the whole thing.

What is the deadline to file for portability?

The deadline is March 1 of the tax year you want the benefit for ^[2]. Florida assesses property as of January 1, so if you moved into your new home on October 15, 2024, you have to file Form DR-501T and your homestead exemption application by March 1, 2025 to get portability for the 2025 tax year.

Most county appraiser offices accept late homestead applications for good cause. Portability is stricter in practice. You can petition for a late filing, but approval hangs on showing real extenuating circumstances, and it's never a sure thing.

Then there's the two-year rule sitting on top of everything. Your old homestead has to have been abandoned no more than two tax years before January 1 of the year you apply. Abandon your old homestead on December 31, 2022, and you have to establish the new one and file by January 1, 2025, or the differential disappears. The March 1 filing deadline layers on top of that two-year window.

Don't wait. Larger county appraiser offices see a rush of applications in late February, and rushed applications carry errors that stall the whole thing.

Event	Deadline
New homestead established	January 1 of the application year
Form DR-501T filed with new county	March 1 of the application year
Old homestead abandoned	No more than 2 tax years prior to application
Late filing petition (if applicable)	Varies by county; typically before the VAB deadline

What documents do you need to bring when you file?

Florida property appraiser offices don't ask for a long paper trail on portability. Show up prepared anyway and you skip a second trip.

Bring your photo ID. A Florida driver's license or ID card with your new address is best. Bring your new property's parcel ID or tax bill, and your old property's parcel ID or last tax bill. Owned the old place jointly? Both owners may need to sign, so bring ID for your co-owner too, or a signed authorization if they can't come.

If your name doesn't match across your documents, say after a marriage or divorce, bring the name-change paperwork like a marriage certificate or a court order.

Skip the appraisals and valuation reports. You don't need them. The appraisers move the just-value data between themselves.

When your previous homestead was in a different Florida county, your new county's appraiser sends a request to the old county under Florida Statute 193.155(8)(g) ^[2]. Keep your old tax notices handy so you can hand over the right parcel ID and speed things along.

Can you still claim portability if you missed the March 1 deadline?

Maybe. It's harder, and nobody can promise it works.

Florida Statute 196.011(8) lets the property appraiser accept a late homestead exemption application filed before the Value Adjustment Board (VAB) deadline, usually in September, if the applicant shows good cause ^[4]. Some counties extend that same flexibility to a portability application filed alongside a late homestead filing. Others don't.

Good cause that has actually worked includes hospitalization or serious illness during the filing window, active military deployment, or a documented family emergency. "I forgot" and "I didn't know about the program" generally fail, though a sympathetic appraiser may still process a miss that surfaces very early in the year.

Get denied and you can appeal to the VAB. File a petition with your county's Value Adjustment Board and lay out your evidence for why the late filing wasn't your fault. The dollars usually justify the fight. A $150,000 transferred differential at a combined 20 mills saves you $3,000 a year, every year you own the home.

If the VAB deadline has already passed too, still call your county property appraiser. Some counties process it for the next tax year even after the current one is lost, as long as the two-year abandonment rule still holds.

How does portability interact with the $50,000 homestead exemption?

They stack, and the order works in your favor.

Florida's standard homestead exemption is $50,000. The first $25,000 applies to every taxing authority, the second $25,000 to non-school levies only ^[5]. Your new home's assessed value is set first by applying the portability benefit (the transferred SOH differential). Then the homestead exemption comes off that already-reduced number.

Back to the earlier example: new home just value $300,000, transferred differential $135,000. Assessed value before exemptions is $165,000. Subtract the $50,000 homestead exemption (ignoring the school-levy split for simplicity) and you land at a taxable value of $115,000 for most levies.

The two benefits don't compete. They compound. That's the reason long-time Florida owners who downsize keep paying very low taxes on a modest new house.

Qualify for extra exemptions too, like the senior low-income exemption, a disability exemption, or a widow or widower exemption, and those come off on top ^[5].

Does portability work differently if you upsize versus downsize?

Yes, and the direction of your move drives how much you actually recover.

Upsize, meaning the new home's just value tops the old home's, and you transfer the full SOH differential up to $500,000. Buying more expensive doesn't cost you the benefit.

Downsize, meaning the new home's just value comes in lower, and your transfer gets prorated by the formula above. You don't carry the full differential. This blindsides a lot of retirees who assume a smaller house means an automatic tax break. The haircut is real.

Move laterally, roughly the same value, and you keep close to the full differential. Small value gaps cause only small prorations.

The practical read for someone choosing between two homes: if Home A costs $10,000 more but its just value sits closer to your old home's, the extra portability transfer can more than pay back that higher price in the first few years of tax savings. Run the numbers before you sign.

For the math in either direction, the Florida Department of Revenue publishes a worksheet in the Form DR-501T instructions ^[3].

What are common mistakes that get portability applications denied?

Missing the March 1 deadline is the number one denial reason. Set a calendar reminder the day you close.

Second is the two-year gap. Take 25 months between selling the old place and buying the new one and the benefit vanishes automatically. The statute is flat about it. No waiver.

Filing with the wrong county happens constantly. You file with the NEW county. People mail DR-501T to their old county appraiser and don't find out for months.

Skipping the simultaneous homestead exemption application is another one. Portability needs an active homestead exemption on the new property. Forget to file Form DR-501 alongside DR-501T and the portability application can't move.

Title problems stall files. If the deed isn't recorded before you file, or the deed and application don't line up, the appraiser's office holds your file. In Florida, the appraiser sets eligibility on the ownership of record as of January 1 ^[2].

Co-ownership where one party held the homestead and the other didn't gets messy fast. The transferable differential depends on the ownership percentage and who claimed homestead. If you and a partner are buying together but only one of you owned the old homestead, the calculation turns tricky. Ask the property appraiser before you file instead of guessing.

Think the calculation itself came back wrong? That's a separate fight from the filing. You can challenge the just value of either your old or new property through the formal appeal process. If the numbers in your county look off, tools like the TaxFightBack appeal kit help you build a comparable-sales case before the VAB.

Does any other state have something similar to Florida's portability?

A few, but none reach Florida's scope or dollar limits.

California's Proposition 19 (effective February 2021) lets homeowners 55 or older, severely disabled, or hit by a wildfire or natural disaster transfer their assessed value to a replacement home anywhere in California ^[6]. There's no cap on the home's value, but the benefit prorates if the new home costs more than the old one. Prop 19 replaced the older Propositions 60 and 90, which locked transfers to certain counties.

Oregon lets senior and disabled homeowners defer property taxes, but it doesn't transfer an assessment.

Texas has a senior homestead transfer, though it moves the dollar amount of taxes paid, not an assessment differential.

Georgia, where counties like Gwinnett and Bibb run their own exemption programs, has no portability at all. Neither does Illinois, where Cook County homeowners face a very different assessment structure.

Outside Florida and wondering if portability reaches you? The honest answer is probably not in any meaningful form. Check your state's department of revenue site directly.

State	Portability / Transfer Program	Age Requirement	Cap
Florida	Save Our Homes portability (DR-501T)	None	$500,000 differential
California	Prop 19 assessed value transfer	55+ (or disabled/disaster)	No cap; proportional above replacement cost
Texas	Senior homestead tax ceiling transfer	65+	Dollar-amount ceiling only
Oregon	Senior deferral (not a transfer)	62+	Deferral, not forgiveness

How do you check the status of your portability application?

After you submit Form DR-501T, your new county appraiser sends a request to the old county, which has to provide the certified SOH differential. This inter-county handoff can take weeks, longer if you moved from a busy county.

Most Florida county property appraiser websites run an online search tool. Look up your parcel by address and see the exemptions on file. Once portability posts, your property record should carry a note like "assessment difference transfer."

Your Notice of Proposed Property Taxes (the TRIM notice), which arrives by mail in August, shows your new assessed value with any portability benefit already applied ^[8]. That's the document you use to confirm the appraiser got it right. If the assessed value reads too high and you think the portability transfer was missed or miscalculated, you have until the VAB petition deadline printed on that TRIM notice to file a challenge ^[7].

No portability benefit showing on the TRIM notice? Call or visit the property appraiser immediately. Don't wait until October. The VAB deadline is firm.

What should you do if you think the portability amount is wrong?

Start with the property appraiser's office. Ask for a written breakdown: how they calculated your SOH differential on the old property and how they applied the proportional formula to the new one. Both numbers have to be right for the final figure to be right.

If the old county certified the wrong differential, you may need to dispute that number with the old county's appraiser or VAB first. This is uncommon, but it happens when records of prior exemptions didn't transfer cleanly.

If the new county ran the proportional formula wrong, work out your own calculation (using the method earlier in this article) and bring it in. Most errors at this stage are arithmetic or data-entry slips that get fixed without a formal appeal.

Can't settle it informally? File a VAB petition in the new county before the deadline on your TRIM notice. A portability dispute gets filed the same way as any other assessment challenge ^[7].

In counties with heavy property tax dispute traffic, like Los Angeles County in California or Montgomery County in Maryland, appeal volumes run high and the procedures are documented publicly. Florida's VAB system is county-specific but follows the same shape everywhere: file the petition, submit evidence, get a hearing.

The TaxFightBack DIY appeal kit is worth a look if you plan to go to the VAB and want a comparable-sales argument sitting alongside your portability dispute.

Frequently asked questions

Can I transfer my portability benefit to a home I buy in a different Florida county?

Yes. Portability works across all 67 Florida counties. You file Form DR-501T with the property appraiser in your new county, and that office contacts your old county for the certified SOH differential. The receiving county handles the inter-county transfer. You don't need to do anything with the old county yourself.

What happens to my portability if I rent out my new home before establishing homestead?

If you don't qualify for homestead exemption on the new property as of January 1, because you weren't using it as your primary residence, you can't file for portability that year. Portability requires an active homestead exemption on the receiving property. Renting it out before claiming homestead can push your eligibility date forward by a full year.

Is there a portability benefit if I inherited a Florida home?

No, not directly. Portability transfers the seller's accumulated SOH benefit only to that person's own new homestead. If you inherit a home and establish your own homestead on it, your SOH cap starts fresh from the date you claim homestead. The decedent's differential doesn't carry over to you as heir.

Does portability affect my school taxes?

Yes. In Florida, the SOH cap and the portability transfer apply to both the school levy and non-school levies. This differs from the $25,000 second homestead exemption, which applies only to non-school millage. So your portability transfer reduces the taxable value used by all taxing authorities, including the school district.

Can I file for portability online?

Some Florida counties accept online applications through their property appraiser's website portal. Others require in-person or mail filing. Check your specific new county property appraiser's website first. Even where online filing exists, you may still need to provide a signed original for co-owned properties.

What if my previous homestead was in Florida but I moved away for several years and am now moving back?

The two-year rule is strict. If you abandoned your Florida homestead more than two tax years before January 1 of the year you want portability, the SOH differential has expired and there's nothing to transfer. You'd start fresh with a new homestead exemption and a new SOH cap beginning the year you re-establish homestead.

How long does the portability review process take after I file?

It varies by county and by how fast the old county answers the data request. Most applicants see a determination within 60 to 90 days of filing. Your TRIM notice in August is the final confirmation. If that TRIM notice doesn't reflect portability and you filed correctly, contact the property appraiser immediately.

Is the $500,000 portability cap per person or per household?

The $500,000 cap on the transferable SOH differential is per homestead, not per person. For a jointly owned property, the cap applies to the total differential being transferred. If spouses each had their own separate homesteads before marrying and combining, the calculation gets complicated, so ask the property appraiser's office how they handle it.

Do I have to file Form DR-501T every time I move?

Yes, every time you change your Florida homestead. The benefit doesn't automatically follow you. Each move needs a new DR-501T filing with the new county, combined with a new homestead exemption application. The upside is that your new SOH differential starts building again the day you establish the new homestead, so future moves also carry portability potential.

What is the portability deadline in Florida for 2025?

March 1, 2025. If you moved into your new Florida home and established it as your primary residence before January 1, 2025, you had until March 1, 2025 to file Form DR-501T and your homestead exemption application with the new county. For the 2026 tax year, the deadline is March 1, 2026.

Can I claim portability if my previous home was a condo or mobile home?

Yes, as long as you held a valid homestead exemption on that condo or mobile home. The type of dwelling doesn't matter. What matters is that the property carried a homestead exemption and that your accumulated SOH differential existed. Condos and mobile homes with homestead exemptions build SOH differentials the same way single-family homes do.

What happens to my portability if I sell my new home after only two years?

You can transfer whatever new SOH differential you've built on that property, plus any remaining portability benefit that was applied, to your next homestead, subject again to the $500,000 cap and two-year abandonment rule. Portability resets with each move. You don't lose the concept, but the dollar amount depends on how much cap savings built up during each ownership period.

Sources

1. Florida Constitution, Article VII, Section 4 (Save Our Homes Amendment): Florida's Save Our Homes amendment caps annual assessment increases on homestead property at 3% or the CPI, whichever is lower
2. Florida Statutes, Section 193.155 (Homestead Assessments): The maximum transferable SOH differential is $500,000; the old homestead must have been abandoned no more than two tax years before the new homestead is established; and ownership of record as of January 1 determines eligibility
3. Florida Department of Revenue, Form DR-501T and Instructions: Form DR-501T is the official form for transferring homestead assessment differences; it is filed with the new county property appraiser; the instructions include a proportional calculation worksheet
4. Florida Statutes, Section 196.011(8) (Annual application for exemption): The property appraiser may accept a late homestead exemption application filed before the VAB deadline if the applicant shows good cause
5. Florida Department of Revenue, Property Tax Exemptions page: The standard Florida homestead exemption is $50,000: the first $25,000 applies to all taxing authorities and the second $25,000 applies only to non-school levies; additional exemptions for seniors, disabled, and widows/widowers apply on top
6. California State Board of Equalization, Proposition 19 information: California's Proposition 19 (effective February 2021) allows homeowners 55 or older, severely disabled, or disaster victims to transfer their assessed value to a replacement home anywhere in California
7. Florida Department of Revenue, Value Adjustment Board process: Homeowners who disagree with their portability calculation or assessment can file a petition with the county Value Adjustment Board by the deadline printed on the TRIM notice
8. Florida Department of Revenue, TRIM Notice explanation: The Notice of Proposed Property Taxes (TRIM notice) arrives in August and shows the assessed value including any portability benefit; it also shows the VAB petition deadline
9. Miami-Dade County Property Appraiser, Portability information: Miami-Dade County property appraiser describes the inter-county data exchange process for portability applications and estimated processing timelines
10. Orange County Florida Property Appraiser, Homestead and Portability page: Orange County property appraiser confirms the March 1 annual deadline for portability applications and the requirement to file DR-501T simultaneously with the homestead exemption application