What happens if you don't pay property tax: penalties, liens and tax sales

Property tax is one of the few debts that can cost you your home even if you have no mortgage. Counties are patient compared with most creditors, and the process usually takes years. But the costs grow quickly, and the rules are strict once the deadlines pass. This guide walks through what happens, step by step, and what you can do at each stage.

Step 1: penalties and interest start right away

The day after a due date, most counties add a penalty, often a few percent of the unpaid amount, and then interest every month. The rates are set by state law and are usually much higher than a bank loan. A year behind can easily add 10% to 18% to what you owe.

Payments are normally applied to the oldest bill first, so a partial payment still helps, but it may not stop the newest bill from falling behind.

Step 2: the tax becomes a lien on the property

Unpaid property tax becomes a lien: a legal claim against the property itself, not just against you. A property tax lien ranks ahead of almost every other claim, including your mortgage. That is why lenders watch tax payments closely. If you have a mortgage and stop paying the tax, your lender will usually pay it for you and add it to your loan, then set up an escrow account and raise your monthly payment.

A tax lien also travels with the property. You cannot sell or refinance with clear title until it is paid, and it is usually paid off from the sale at closing.

Step 3: the county moves to collect

After a set period, often a year or more, the county starts formal collection. States use one of two main systems.

Tax lien states

In about half the states, the county sells tax lien certificates. An investor pays your overdue tax to the county and gets the right to collect it back from you with interest. In Florida, for example, investors bid the interest rate down from a maximum of 18% a year.

You do not lose the home right away. You get a redemption period to pay the full amount plus interest and fees, commonly one to three years. If you do not redeem in time, the certificate holder can apply for a tax deed or start a foreclosure, and the home can be sold.

Tax deed states

In other states, the county itself takes the property or sells it at a tax deed auction after the delinquency period runs out. Some states give a redemption period after the sale. Others give very little time once the sale is held, so the notices before the sale matter most.

Some states use a mix, and rules can differ by county. Your county treasurer or tax collector publishes the schedule and the list of properties headed for sale.

Your equity is protected

If a home is sold for unpaid tax and brings more than the debt, the extra money belongs to the owner. In 2023, the US Supreme Court ruled in Tyler v. Hennepin County that a government cannot keep the surplus value of a home beyond the taxes, interest and costs owed. Many states have since changed their laws to return surplus funds, though you may have to file a claim to get them.

Ways to catch up before it gets serious

• Call the treasurer early. Many counties offer installment plans for back taxes, especially for homeowners who live in the home. Some stop new penalties while you keep to the plan.
• Check your exemptions. A missing homestead exemption or senior or disability exemption can cut the bill going forward, and a few states allow corrections for past years.
• Ask about deferral. Many states let older or disabled homeowners put off paying property tax until the home is sold or the owner dies. The deferred amount becomes a lien, usually at a low interest rate.
• Look for hardship programs. Some states and cities have funds for homeowners behind on taxes after a job loss, illness or disaster.
• Appeal the value next time. If the bill is high because the assessment is wrong, an appeal can prevent the problem next year. An appeal does not usually pause what you already owe.

Watch for mail and scams

Tax sale notices come by mail and are often printed in a local newspaper. Keep your mailing address current with the county, especially if you own a property you do not live in. After a lien is sold, you may also get letters from investors or companies offering to “help.” Always confirm the amount due directly with your county’s tax office. The official website is listed on every county page on this site.

If you are buying a property

Unpaid taxes are a common surprise on inherited homes and properties bought at auction. A title search before closing should find any liens. If you are buying a home, our home buying guide explains how the current year’s tax is split at closing.