Property tax and stamp duty are two different taxes that hit real estate owners at two different moments. Stamp duty, known in most U.S. states as a transfer tax, documentary stamp tax, deed excise tax, or conveyance tax, is a one-time charge paid when a property deed changes hands. Property tax is a recurring bill from your local government that arrives every year for as long as you own the home. One shows up once, at closing. The other follows you until you sell.
If you’re buying, both may apply. If you’re already an owner, only the recurring one still concerns you. The distinction matters because the deadlines, the amounts, and the consequences of missing a payment are completely different for each.
The One-Time Tax at Closing
In the United States, what other countries call stamp duty goes by a handful of names depending on the state: transfer tax, documentary stamp tax, deed excise tax, or conveyance tax. The mechanism is the same. The government charges a percentage of the sale price when a deed changes hands, and payment is usually required before the deed can be recorded in public records.
About 36 states and the District of Columbia impose some form of statewide real estate transfer tax. The rest, including Texas, Alaska, and Montana, have no statewide version, though some cities and counties in those states charge their own. Where transfer taxes exist, rates generally fall between a fraction of a percent and roughly 5%, with most states clustering well under 2%. Who owes the tax depends on local custom and whatever the purchase contract spells out; it may be the buyer, the seller, or split between them.
Transfer taxes are almost always handled at closing. A title company or closing attorney calculates the amount, collects it from whoever is responsible, and submits it with the deed. In many jurisdictions the recorder’s office will reject a deed that arrives without proof the transfer tax was paid, which makes this a hard deadline. Skip it and your ownership isn’t on the public record, leaving you exposed to competing claims on the property. Where a grace period exists, it tends to run about 30 days from the transfer date.
Common Exemptions
Not every transfer triggers the tax. Most states exempt at least some of these situations:
- Transfers between spouses, including during divorce.
- Transfers to or from a government entity.
- Property passing through a will, intestate succession, or joint tenancy with right of survivorship.
- Transfers between parents and children, sometimes extending to grandchildren and in-laws.
- Deeds that move property within a family or between a trust and its beneficiary without a real purchase price.
The specific list varies by state, so checking the local statute before assuming you qualify is worth the few minutes it takes.
The Recurring Tax You Pay Every Year
Property tax is the bill that arrives every year for as long as you hold title. Local governments, not the federal government, levy it to fund schools, fire departments, road maintenance, libraries, and law enforcement. It’s the single largest revenue source for most municipalities, which is why they pursue unpaid balances aggressively.
Depending on where you live, the bill comes annually, semiannually, or quarterly, with payments due on fixed dates set by the local fiscal calendar. The obligation persists regardless of whether you have a mortgage, whether the property generates income, or whether you actually live there.
Many homeowners never write a check directly because their mortgage lender handles it through an escrow account. The lender adds a fraction of the estimated annual tax to each monthly mortgage payment, holds the money, and pays the tax bill when it comes due. Lenders aren’t universally required to set up escrow accounts, but many loan programs make it a condition of the mortgage. Where escrow is in place, the lender must analyze the account annually and notify you of any shortage or surplus.
How Property Tax Is Calculated
The formula is simple: assessed value multiplied by the millage rate equals the tax owed. Each piece has its own process behind it.
Assessed Value
A local tax assessor estimates the fair market value of every property in the jurisdiction using mass appraisal methods. They look at recent sales of comparable homes, the size and condition of the structure, any improvements or additions, and neighborhood trends. In many jurisdictions the taxable value isn’t the full market value. Instead, an assessment ratio is applied. If your home’s market value is $400,000 and the local assessment ratio is 60%, your taxable assessed value is $240,000. These ratios vary widely.
The Millage Rate
The millage rate, sometimes called a mill levy, is the tax rate your local government sets each year based on its budget needs. One mill equals $1 of tax for every $1,000 of assessed value.1Legal Information Institute. Millage A rate of 25 mills on an assessed value of $240,000 produces an annual bill of $6,000. Multiple taxing authorities (county, city, school district, special districts) each set their own millage rate, and the total is what appears on your bill.
How Often Values Get Updated
Reassessment frequency depends entirely on where the property sits. Some states require annual reassessments, others mandate them every six to ten years, and a few leave it to individual counties. California reassesses only when ownership changes or new construction is completed, rather than on a fixed schedule.2Tax Foundation. State Provisions for Property Reassessment In states with long cycles, your assessed value can lag actual market conditions for years, then jump sharply when the reassessment catches up. Some jurisdictions cap the annual increase to smooth this out.
Supplemental Bills for New Buyers
New buyers sometimes get an unpleasant surprise. In states that reassess upon a change of ownership, if the new assessed value is higher than the previous owner’s, you owe the difference for the remaining portion of the current tax year. These supplemental bills arrive separately from the regular annual bill, often months after closing, so budget for the possibility.
Homestead Exemptions
Most states offer some version of a homestead exemption that reduces the taxable value of a primary residence. Some exempt a flat dollar amount, some apply a percentage reduction, and some cap the annual increase for homesteaded properties. If you buy a home and plan to live in it, filing for the exemption through your county assessor or tax office is one of the first things to do after closing. Miss the filing deadline and you pay the full amount for that year.
Side-by-Side Comparison
- When it’s paid: transfer tax is a one-time payment at closing; property tax recurs every year you own the home.
- Who charges it: transfer tax comes from the state or locality where the property sits, and about 14 states have none; property tax is levied by local governments in every state.
- How it’s calculated: transfer tax is a percentage of the sale price, typically under 2%; property tax is assessed value multiplied by the local millage rate, recalculated periodically.
- Federal deductibility: transfer tax adds to your cost basis but isn’t directly deductible; property tax is deductible as part of the SALT deduction, subject to the $40,400 cap in 2026.3Office of the Law Revision Counsel. 26 USC 164 – Taxes
- Consequences of nonpayment: unpaid transfer tax blocks deed recording; unpaid property tax leads to liens, interest, and eventual loss of the property.
Over a full ownership period, property tax is the far larger obligation. A $3,000 transfer tax at closing is small compared with 20 or 30 years of annual property tax bills.
Federal Income Tax Treatment
Both taxes affect your federal return, but in different ways.
If you itemize, property taxes paid during the year count toward the state and local tax (SALT) deduction. For 2026, the combined SALT cap is $40,400 for most filers, or $20,200 if married filing separately.3Office of the Law Revision Counsel. 26 USC 164 – Taxes That cap covers property taxes, state income taxes, and local taxes combined, so in high-tax states property taxes alone may absorb most or all of it. Taxpayers with modified adjusted gross income above $500,000 ($250,000 for married filing separately) face a further phase-down of the cap.4Internal Revenue Service. How to Update Withholding to Account for Tax Law Changes for 2025
Transfer taxes aren’t separately deductible. The IRS treats them as part of the cost basis of the property, which matters when you sell. When you sell your primary residence, you can exclude up to $250,000 of capital gain from income ($500,000 for married couples filing jointly) as long as you owned and lived in the home for at least two of the five years before the sale.5Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence Your cost basis includes the purchase price plus the transfer tax you paid, plus any capital improvements you made. A higher basis means less taxable gain, so keeping the closing paperwork is worth the space.6Internal Revenue Service. Topic No 701, Sale of Your Home
What Happens When Property Tax Goes Unpaid
Governments don’t write off unpaid property taxes. The enforcement process is gradual but relentless, and it can end with the loss of the home. This is the biggest practical reason the recurring tax deserves more attention than the one-time one.
Interest and penalties start accruing the day after a deadline passes. Late interest rates vary by jurisdiction but commonly run about 1% to 1.5% per month, which compounds fast. A $5,000 bill at 1.5% monthly interest reaches nearly $6,000 within a year, before any additional penalties.
If the balance stays outstanding, the taxing authority places a lien on the property. A tax lien takes priority over nearly all other claims, including most mortgages. With a lien attached, you effectively cannot sell or refinance, because no buyer or lender will close while unpaid taxes cloud the title.
Eventually the government can sell either the lien or the property itself at a tax sale. In a lien sale, an investor buys the right to collect the debt plus interest. In a deed sale, the property itself is auctioned. Most states give the original owner a redemption period after the sale, often up to a year, during which the property can be reclaimed by paying the full outstanding balance plus penalties, interest, and the buyer’s costs. The window is limited and the price at that point is steep.
Which One Should You Plan For
If you’re buying, treat the transfer tax as a closing cost and confirm with your title company or attorney who owes it under your contract and your state’s rules. It’s a single line item on the settlement statement. If you’re already an owner, or once you become one, property tax is the ongoing number to build into your budget. It reassesses, it changes with local budgets, and it doesn’t stop until you sell.