Enter your home value, pick your state, and get an instant property tax estimate based on 2024 effective tax rates. Free, accurate, no sign-up needed.
How to Calculate Property Tax
Property tax is calculated by multiplying your property's assessed value by the local tax rate (also called a mill rate). The formula is straightforward, but the inputs — assessed value, exemptions, and rates — vary significantly by state and county.
Annual Property Tax = Assessed Value × Tax Rate
Assessed Value = Market Value × Assessment Ratio
Example: $350,000 home × 0.88% rate = $3,080/year
What is an Effective Property Tax Rate?
The effective property tax rate is the actual tax paid as a percentage of the home's market value. This is the most useful comparison metric because it accounts for differences in how states assess property. Our calculator uses 2024 effective rates from the U.S. Census Bureau American Community Survey — the most recent comprehensive data available.
Why Do Property Tax Rates Vary So Much?
Property taxes are primarily a local tax used to fund schools, roads, fire departments, and other local services. States with less income tax revenue tend to lean more heavily on property taxes. New Jersey's high rates stem largely from how local schools are funded — almost entirely through property taxes. Hawaii's low rates are offset by high tourism-driven state revenue.
How to Lower Your Property Tax Bill
- Apply for exemptions — Most states offer homestead exemptions for primary residences, plus additional breaks for seniors, veterans, and disabled homeowners. These can reduce your taxable assessed value by $25,000–$50,000+.
- Appeal your assessment — If you believe your home is assessed above its market value, you can file an appeal with your county assessor. This is worth doing after any market correction.
- Pay on time — Many counties offer a small discount (1–3%) for early or lump-sum payment. Missing deadlines typically triggers penalties of 5–10%.
- Check for errors — Assessors sometimes record incorrect square footage, lot size, or bedroom counts. These errors can increase your bill unfairly and are usually correctable with documentation.
Frequently Asked Questions
How accurate is this property tax calculator?
This calculator uses 2024 effective tax rates from the U.S. Census Bureau American Community Survey — the most comprehensive and recent state-level data available. Because property taxes are set at the county and city level, your actual bill may be higher or lower than the state average. For a precise figure, contact your county assessor's office.
What's the difference between assessed value and market value?
Market value is what your home would sell for today. Assessed value is the value your county uses to calculate your tax bill — it's often a percentage (called the assessment ratio) of market value. In some states like California, assessed value can be much lower than market value due to Proposition 13-style limits that cap annual increases.
How often are property taxes reassessed?
It varies by state and county — anywhere from annually to only when the property changes hands. States like California only reassess at sale. Others like New Jersey reassess every few years. Frequent reassessments mean your bill can jump sharply after a hot real estate market.
Are property taxes deductible on federal taxes?
Yes — up to $10,000 per year ($5,000 for married filing separately) under the SALT deduction cap established by the 2017 Tax Cuts and Jobs Act. You must itemize deductions rather than take the standard deduction to benefit. For most homeowners in high-tax states, the $10,000 cap significantly limits this deduction.
What happens if I don't pay my property taxes?
Unpaid property taxes accumulate penalties and interest, and can eventually result in a tax lien on your property. If left unpaid long enough, the government can foreclose on the property even if you own it outright. Most jurisdictions give homeowners 1–3 years to pay before foreclosure proceedings begin.