Property tax amounts depend on your home's assessed value and your local tax rate
There is no single property tax amount that applies everywhere. What you pay depends on two things: what your local assessor says your home is worth, and what percentage your city or county charges on that value. A home worth $300,000 in one county might generate $3,000 in annual tax, while an identical home in another county generates $6,000. The difference is entirely the local rate.
Your property tax bill arrives once or twice a year, depending on where you live. The amount is calculated by multiplying your home's assessed value by the local tax rate, which is usually expressed as a percentage or as dollars per $1,000 of assessed value. Some states publish their average effective tax rates (the percentage of home value paid in tax each year), but your actual bill depends on your specific address and your assessor's valuation of your property.
Key Takeaways
- Property tax is calculated by multiplying your home's assessed value by your local tax rate, which varies significantly by county and state.
- Your assessed value is not the same as your home's market value — assessors use their own methods and update values on different schedules.
- You can find your assessed value and tax rate on your county assessor's website or your property tax bill.
- If you believe your assessed value is too high, you can file a formal challenge called an assessment appeal or reassessment request.
- Some homeowners may reduce their tax through exemptions for age, disability, military service, or agricultural use, depending on state law.
How to find your assessed value and tax rate
Start with your property tax bill — it lists both your assessed value and the tax rate your county or municipality applies. If you don't have a recent bill, visit your county assessor's website. Most counties now publish searchable databases where you can enter your address and see the assessed value on file. The assessor's office is a county function, not a state one, so you need the office for your specific county.
The tax rate is usually posted on the same county website or on your local government's finance or budget page. It may be listed as a percentage (for example, 1.2% of assessed value) or as a dollar amount per $1,000 of assessed value (for example, $12 per $1,000). Both methods describe the same thing — multiply your assessed value by the rate to get your annual tax.
If you own property in multiple counties or states, each one taxes it separately. You will receive a bill from each assessor's office. Assessed values and rates do not transfer between jurisdictions.
Why assessed value differs from what you paid for your home
Your assessed value is what the county assessor estimates your home is worth for tax purposes. This is often different from the price you paid, the price you could sell it for today, or the value your bank used when you got a mortgage. Assessors use their own methods — some use recent sales of similar homes, some use income approaches for rental properties, and some use a combination of methods.
Assessors also update values on different schedules. Some counties reassess every year. Others reassess every three to five years, or only when a property changes hands. A few states use a "market value" approach where assessed value tracks actual market prices closely. Others use a "fractional assessment" where assessed value is intentionally kept at a percentage of market value — for example, 50% or 60% of what the home would sell for.
You can usually find out when your county last assessed your property and when the next assessment is scheduled. This information is on the assessor's website or on your tax bill. If your home's market value has dropped significantly since the last assessment, you may be able to challenge the assessed value.
Understanding your tax bill and payment schedule
Property tax bills arrive on different schedules depending on where you live. Some counties send one bill per year, usually in the fall or winter. Others send two bills per year, typically in spring and fall. A few send quarterly bills. Your bill will show the assessed value, the tax rate, the total tax owed, and the due date or dates.
If you have a mortgage, your lender may require you to pay property tax through an escrow account. You send money to the lender each month, and the lender pays the tax bill when it comes due. If you own your home outright, you pay the tax bill directly to your county treasurer or tax collector. The payment address is on your bill.
Late payments usually trigger penalties and interest. The amount and timing vary by county — some charge penalties when ready, others allow a grace period of 30 days or more. If tax goes unpaid for several years, the county may place a lien on your property or eventually foreclose and sell it to recover the tax debt. This is rare for homeowners who pay late by accident, but it does happen if tax goes unpaid for years.
How to challenge your assessed value
If you believe your assessed value is too high, you can file a formal challenge. The process and important date vary by state and county, but the general steps are the same. First, find the important date — it is usually 30 to 60 days after your tax bill arrives, though some counties have different windows. Check your assessor's website or call the office to confirm.
Next, gather evidence that your assessed value is wrong. This might include a recent appraisal, a professional home inspection, recent sales of similar homes in your area, or documentation of major damage or needed repairs. You do not need a professional appraisal — many successful challenges use comparable sales data that homeowners find themselves.
File your challenge with your county assessor's office. Most counties now accept challenges online through their website, though some still require a paper form mailed or delivered in person. The form asks you to state why you believe the value is wrong and to provide your evidence. After you file, the assessor's office will review your claim. If they agree, they lower the value and you receive a credit or refund. If they disagree, you may have the right to appeal to a county board or to tax court, depending on your state.
Tax exemptions that may lower your bill
Many states offer exemptions that reduce assessed value or tax for certain homeowners. Common exemptions include homestead exemptions (available to primary residents in many states), exemptions for seniors, exemptions for people with disabilities, exemptions for military veterans or active-duty service members, and exemptions for agricultural property. Some states also offer exemptions for historic properties or properties with environmental conservation easements.
Exemptions are state and county specific — what is available in one state may not exist in another, and the amount of the exemption varies widely. A homestead exemption might reduce assessed value by $25,000 in one state and $50,000 in another. You typically must file for an exemption with your county assessor's office, usually by a important date in the spring or early summer. The assessor's website lists which exemptions are available in your county and the process process.
Exemptions are not automatic — you must request them. If you think you may be may be able to access, contact your assessor's office or visit their website to see the list and process forms. Missing the important date usually means you cannot claim the exemption until the following year.
How property tax varies across states and counties
Effective property tax rates (the percentage of home value paid in tax each year) range from under 0.3% in some states to over 2% in others. States with lower rates include Hawaii, Alabama, Louisiana, and Wyoming. States with higher rates include New Jersey, Illinois, Connecticut, and Texas. Within each state, rates can vary significantly between counties — a county in a high-tax state might have a lower rate than a county in a low-tax state.
The variation reflects different choices about how to fund schools, roads, and local services. States that rely more on income tax or sales tax tend to have lower property taxes. States that rely more on property tax to fund schools and local government tend to have higher rates. Some counties have voted to increase tax rates to fund specific projects like school improvements or infrastructure repairs.
If you are considering moving or buying property in a new area, property tax is worth researching. A difference of 0.5% in tax rate means $1,500 per year on a $300,000 home — a real cost to factor into your decision.
Frequently Asked Questions
Is property tax the same as my mortgage payment?
No. Your mortgage payment covers principal and interest on the loan. Property tax is a separate bill from your county. If you have a mortgage, your lender may require you to pay property tax through an escrow account, so it comes out of your monthly payment, but it is not part of the loan itself.
Can my property tax go up every year?
It can, but the rules vary by state. Some states allow assessors to raise assessed values every year based on market conditions. Others cap the annual increase — for example, California limits increases to 2% per year unless the property changes hands. Check your state's rules on your assessor's website or by calling the office.
What happens if I don't pay my property tax?
Late payments trigger penalties and interest, which vary by county. If tax remains unpaid for several years, the county may place a lien on your property, preventing you from selling or refinancing. In extreme cases, the county can foreclose and sell the property to recover the debt. Contact your tax collector's office when ready if you cannot pay on time.
Do I pay property tax on a rental property I own?
Yes. Rental properties are taxed the same way as owner-occupied homes — assessed value times local tax rate. Some states offer exemptions for agricultural or conservation land, but residential rental properties do not may have access to for homestead exemptions. You can deduct property tax as a business expense on your income tax return.
How often does my assessed value get updated?
It depends on your county's reassessment schedule. Some counties reassess every year. Others reassess every three to five years, or only when a property is sold. Check your assessor's website or your tax bill to find out when your property was last assessed and when the next assessment is scheduled.