Property tax on a house is not a fixed number — it depends on your home's assessed value, your local tax rate, and what exemptions your state or county allows

The amount you pay each year is calculated by multiplying your home's assessed value by your local property tax rate, usually expressed as a percentage or per $1,000 of value. A house assessed at $300,000 in a county with a 1% tax rate costs $3,000 per year. The same house in a county with a 0.5% rate costs $1,500. That difference — $1,500 — is real money that depends entirely on where you live, not on the house itself.

Property tax rates vary dramatically by state and county. Some states average under 0.5% of home value annually; others average over 1.5%. Within a single state, one county might tax at 0.8% while a neighboring county taxes at 1.3%. Your mortgage lender or county assessor's office can tell you the exact rate for your address, but you cannot know what you will pay without knowing both the assessed value and the local rate.

Key Takeaways

  • Your annual property tax is your home's assessed value multiplied by your local tax rate, which varies by county and state.
  • Assessed value is usually lower than market value — assessors use sales data, not what you paid or what your house is worth today.
  • Most states offer exemptions that reduce your tax bill: homestead exemptions, senior exemptions, disability exemptions, and agricultural exemptions are common.
  • Your property tax bill arrives once or twice per year from your county assessor or tax collector, and the amount can change if your home is reassessed or your exemptions change.
  • If you have a mortgage, your lender typically collects property tax through escrow and pays the county on your behalf.

How assessed value differs from what your house is worth

The assessed value on your tax bill is not the same as your home's market value or what you paid for it. Assessors use a formula based on recent sales of similar homes in your area, not on individual appraisals. This means a house you bought for $400,000 might be assessed at $350,000, or assessed at $420,000 if the market has moved since you purchased.

Assessments happen on a schedule set by your county — some reassess every year, others every three to five years. When your house is reassessed, the assessed value can go up or down. If your county reassesses and your home's value has risen, your tax bill will rise too. If you believe your assessment is wrong — too high compared to similar homes — most counties allow you to file a formal challenge called an assessment appeal or tax assessment protest. The process and deadline vary by county.

Common exemptions that lower your tax bill

Most states reduce property tax for certain owners. A homestead exemption is the most common: it reduces the assessed value of your primary residence by a set amount or percentage. In some states, a homestead exemption cuts $50,000 off your assessed value; in others, it reduces your tax by a fixed percentage. You usually must apply once and renew every few years, and you must live in the home as your main residence.

Other exemptions target specific groups. Senior exemptions reduce tax for homeowners over a certain age (often 65 or older). Disability exemptions reduce tax for owners with disabilities or surviving spouses of veterans. Agricultural exemptions apply to land used for farming. Some states offer exemptions for solar panels or energy-efficient improvements. Each state and county sets its own list and rules. Your county assessor's office publishes which exemptions are available in your area and how to request them.

What happens if you do not pay property tax

Property tax is mandatory. If you do not pay, your county can place a lien on your home, meaning they have a legal claim against it. After a set period — usually one to three years, depending on your state — the county can foreclose and sell your home to recover the unpaid tax and penalties. If you have a mortgage, your lender will not allow this to happen; they will pay your tax from escrow and add the cost to your loan balance.

If you fall behind on property tax and do not have a mortgage, contact your county tax collector immediately. Many counties offer payment plans or tax deferral programs for seniors or people with disabilities. Some offer temporary relief during hardship. The longer you wait, the more penalties and interest accumulate, and the closer you move toward a tax sale.

How property tax bills are paid and when they arrive

Property tax bills are sent by your county assessor or tax collector, usually once or twice per year depending on your state. The bill shows your assessed value, your tax rate, any exemptions applied, and the total amount due. Payment is due on a date set by your county — often in the fall for the following year's tax, or split into two payments in spring and fall.

If you have a mortgage, your lender collects property tax through an escrow account. Your monthly mortgage payment includes a portion set aside for tax and insurance. The lender pays the county directly on your behalf when the bill is due. You do not write a separate check, but you are still responsible if the escrow amount is too low — your lender will ask you to increase your monthly payment. If you own your home outright, you pay the county directly by the due date, usually by check, online, or in person at the tax collector's office.

Why property tax varies so much between states and counties

Property tax rates reflect how each state and county funds schools, roads, police, and other services. States that rely heavily on property tax to fund schools have higher rates. States that fund schools through income tax or sales tax have lower property tax rates. Within a state, wealthier counties with higher home values sometimes have lower tax rates because they collect more total revenue from fewer homes.

This variation is why property tax is often the biggest difference in housing costs between regions. A $400,000 home in a low-tax state might cost $2,000 per year in property tax; the same home in a high-tax state might cost $8,000 per year. Over a 30-year mortgage, that difference adds up to hundreds of thousands of dollars. When comparing where to buy or move, property tax rate is as important as home price.

How to find your property tax rate and estimate your bill

Your county assessor's website lists the tax rate for your area, usually broken down by district or neighborhood. Search "[your county] assessor" or "[your county] property tax rate." You can also call the assessor's office directly and give them your address; they will tell you the rate and your current assessed value.

To estimate your annual bill, multiply your assessed value by your tax rate. If your assessed value is $300,000 and your rate is 1.2%, your bill is $3,600 per year. If you have exemptions, subtract those from the assessed value first. For example, if you have a $50,000 homestead exemption, your taxable value is $250,000, and your bill is $3,000. This is an estimate only — your actual bill may differ if your assessment changes or exemptions are added or removed.

Frequently Asked Questions

Can property tax go down if my home loses value?

Yes, but only if your county reassesses and the assessed value drops. If your home's market value falls but your county does not reassess for several years, your tax bill will not change. If you believe your assessment is too high compared to similar homes, you can file an assessment appeal with your county assessor.

What if I disagree with my assessed value?

File a formal appeal with your county assessor's office. The process and deadline vary by county, but you usually have 30 to 60 days from the date your assessment notice is mailed. Bring evidence that your home is worth less than the assessed value — recent sales of comparable homes, an independent appraisal, or documentation of needed repairs. Contact your assessor's office for the exact steps and forms required in your county.

Do I have to pay property tax if I rent?

No. The property owner pays property tax. As a renter, you do not owe property tax directly, though your rent may reflect the landlord's tax costs. Homeowners and owners of investment property pay property tax to the county.

What happens to property tax when I sell my house?

Property tax is tied to the property, not the owner. When you sell, the new owner becomes responsible for property tax going forward. At closing, property tax is usually prorated — you pay tax for the months you owned the home, and the buyer pays for the remaining months. Your closing statement will show this calculation.

Can I deduct property tax on my federal income tax return?

You may be able to deduct property tax on your federal return if you itemize deductions. The deduction is capped at $10,000 per year for state and local taxes combined (including income tax and sales tax). Consult a tax professional or the IRS website for current rules and whether deducting makes sense for your situation.