Property tax is a yearly bill you owe to your local government based on what your home or land is worth

Property tax is not a one-time payment when you buy a home. Instead, your county or city assesses the value of your property and sends you a bill once or twice a year for a percentage of that value. The amount you pay depends on three things: what your property is worth, the tax rate in your area, and any exemptions you might have. Most homeowners pay property tax through their mortgage payment — the lender collects it and passes it to the local government — but if you own your home outright or rent, you may pay directly.

Property tax funds local services you use: schools, roads, fire departments, libraries, and police. The rate varies dramatically by location. A home worth $300,000 might cost $3,000 a year in property tax in one county and $6,000 in another, depending on the local tax rate and what services the area provides.

Key Takeaways

  • Your property tax bill is based on your home's assessed value multiplied by your local tax rate, which is set by your county or city.
  • Most homeowners pay property tax through their mortgage payment as part of escrow, though the lender sends the actual money to the government.
  • Property tax rates and assessment methods vary by state and county, so two identical homes in different locations will have different tax bills.
  • You can challenge your property's assessed value if you believe it is too high, usually through a formal appeal process at your county assessor's office.
  • Homeowners may reduce their tax bill through exemptions like homestead exemptions, senior exemptions, or disability exemptions, depending on what your state offers.

How your property's assessed value is determined

Your county assessor's office estimates what your property is worth — this is called the assessed value, and it is usually lower than the actual market price. The assessor may use recent sales of similar homes in your area, the cost to rebuild your house, or the income your property generates if it is a rental. Some counties reassess every year; others do it every few years. You will receive a notice in the mail when your property is reassessed, and it will show the new assessed value.

The assessed value is not the same as the market value. A home you could sell for $400,000 might have an assessed value of $350,000 or $380,000 depending on the county's method. This gap exists because assessors cannot personally inspect every property every year, so they use formulas and comparable sales to estimate. If you believe the assessed value is wrong — because your home needs major repairs, or because similar homes nearby were assessed lower — you can file a challenge, usually called a reassessment appeal or assessment appeal.

The tax rate and how it is calculated

Once your property is assessed, the local government applies a tax rate to that value. The rate is expressed as a percentage or as a dollar amount per $1,000 of assessed value. For example, if your assessed value is $300,000 and the tax rate is 1.2 percent, you owe $3,600 per year. If the rate is stated as $12 per $1,000, the math is the same: $300,000 divided by $1,000 equals 300, times $12 equals $3,600.

Tax rates are set by your county, city, or school district — sometimes all three levy a tax on the same property. Your bill shows each portion separately. A single property tax bill might include county tax, city tax, school tax, and library tax, each with its own rate. The total is what you owe. Rates change year to year based on local government budgets and voter decisions, so your bill may go up or down even if your home's value stays the same.

How property tax is paid through your mortgage

If you have a mortgage, your lender likely collects property tax as part of your monthly payment. This money goes into an escrow account — a separate account the lender holds in your name. When your property tax bill comes due, the lender pays it from that account using your money. You do not write a separate check to the county; the lender handles it.

Your lender estimates how much you will owe in property tax for the year and divides it by 12, adding that amount to your monthly mortgage payment. If your assessed value increases, your lender will increase the monthly escrow amount. You will receive a statement each year showing how much was collected and paid. If you pay off your mortgage, you become responsible for paying property tax directly to your county — the lender will no longer handle it for you.

Property tax exemptions and reductions

Many states and counties offer exemptions that lower your property tax bill if you meet certain conditions. The most common is a homestead exemption, which reduces the assessed value for your primary residence. Some states exempt a flat dollar amount — say, $50,000 of your home's value — while others exempt a percentage. Other exemptions exist for seniors, disabled homeowners, veterans, and agricultural land. The exemptions you can use depend on your state and county.

To use an exemption, you typically file a form with your county assessor's office. The form asks you to prove your status — for example, a homestead exemption requires proof that the property is your primary residence, usually a driver's license or utility bill. Once approved, the exemption reduces your assessed value, which lowers your tax bill. You may need to renew the exemption every few years or whenever you move.

Challenging your property tax assessment

If you believe your assessed value is too high, you can file a formal challenge. The process and important date vary by state, but most counties have a window of 30 to 60 days after you receive your assessment notice to file an appeal. You will submit a form to your county assessor's office explaining why you think the value is wrong. Common reasons include recent major repairs that lower the home's value, errors in the property description, or comparable homes in your area that sold for less.

To support your appeal, gather evidence: recent appraisals, photos of damage or needed repairs, or sales prices of similar homes nearby. Some counties hold a hearing where you can present your case in person; others decide based on written submissions. If you disagree with the county's decision, you may be able to appeal to a higher board or court, though this usually requires hiring a property tax attorney. The appeal process is free at the county level.

What happens if you do not pay property tax

Property tax bills have a due date, usually once or twice a year depending on your county. If you do not pay by the important date, you will owe a penalty and interest. The penalty is typically a percentage of the unpaid tax — often 10 to 20 percent — and interest accrues monthly. After a set period of non-payment, usually two to three years, the county can place a tax lien on your property, which means the government has a legal claim against your home.

If the tax debt remains unpaid long enough, the county may foreclose on the property and sell it at a tax sale to recover the money owed. This is rare for homeowners with mortgages, because lenders pay the tax from escrow to protect their investment. But if you own your home outright and stop paying, foreclosure is a real risk. If you cannot pay your full bill, contact your county assessor's office — some counties offer payment plans or hardship deferrals.

How property tax differs by state and county

Property tax rates, assessment methods, and exemptions vary widely. New Jersey and Illinois have some of the highest effective property tax rates in the country, while states like Hawaii and Alabama have lower rates. Within a state, rates also differ between counties and cities. A county might tax at 1 percent of assessed value while a neighboring county taxes at 0.8 percent. Some states reassess property every year; others do it every three to five years.

Exemptions also differ. Some states offer a homestead exemption; others do not. Some exempt agricultural land; others tax it at the same rate as residential property. If you are moving or buying property in a new area, research the local property tax rate and assessment method — they can significantly affect your housing costs. Your county assessor's website usually lists the current rate and shows how to file for exemptions.

Frequently Asked Questions

Can I deduct property tax from my federal income taxes?

Yes, if you itemize deductions on your federal tax return. The State and Local Tax (SALT) deduction allows you to deduct up to $10,000 per year in combined state, local, and property taxes. Most homeowners with mortgages benefit from this deduction. If you take the standard deduction instead, you cannot deduct property tax. Consult a tax professional to determine which option saves you more money.

What is the difference between assessed value and market value?

Assessed value is what the county estimates your home is worth for tax purposes, while market value is what it would actually sell for. Assessed value is usually lower because assessors use formulas rather than individual appraisals. Market value changes with the real estate market; assessed value changes on the county's schedule, often every few years. Your property tax is based on assessed value, not market value.

Do renters pay property tax?

Renters do not pay property tax directly — the landlord does. However, property tax is often factored into the rent you pay, since the landlord's costs include the tax bill. Property tax is a cost of owning rental property, and landlords typically pass some or all of it to tenants through higher rent.

What if I disagree with the county assessor's decision on my appeal?

Most states allow a second appeal to a county board of review or assessment review board. If you lose there, you may be able to appeal to state court, though this usually requires an attorney and costs money. The process and timeline vary by state. Contact your county assessor's office to learn what appeals are available in your area.

How often does my property tax bill change?

Your bill can change every year because the tax rate changes, your assessed value changes, or both. If your county reassesses annually, your assessed value may shift based on the market. Even if your assessed value stays the same, the tax rate might increase if the local government raises it. You will receive a new bill each tax year showing the current amount owed.