Property Tax by State Calculator
Property tax is the single largest local tax most homeowners pay, and the rate varies widely by state and county. This calculator multiplies your home value by your state's effective property tax rate to estimate annual and monthly property tax. Because rates differ by locality and change over time, the effective rate is an editable input: look up your state or county figure from the US Census Bureau's American Community Survey (median real estate taxes divided by median home value), enter it, and the calculator does the rest.
Property tax formula
Taxable value = home value - exemptions Annual tax = taxable value x effective rate% Monthly tax = annual tax / 12
The effective rate folds in local assessment ratios. For an exact figure use your county assessor's millage and assessment ratio.
Worked example
A 350,000 home with no exemptions at a 1.1% effective rate: annual tax = 350,000 x 0.011 = 3,850. Monthly tax = 3,850 / 12 = 320.83.
Property tax by state: frequently asked questions
How is property tax calculated?
Property tax is your home's assessed value multiplied by the local tax rate (often expressed as a millage rate or an effective percentage). This calculator uses the effective rate (annual tax as a percentage of market value), which is the most comparable figure across states because it folds in assessment ratios and exemptions.
Why is the tax rate an editable input?
Effective property tax rates differ by state, county and even district, and they change as local budgets and assessments change. Rather than show a figure that could be stale or wrong for your locality, this calculator asks you to enter the effective rate. The US Census Bureau publishes median real estate taxes and home values by state so you can compute or look up your rate.
What is an effective property tax rate?
The effective rate is the annual property tax divided by the property's market value, shown as a percentage. For example, if a 300,000 home pays 3,000 a year, the effective rate is 1.00%. It differs from the nominal millage rate because of assessment ratios, caps and homestead exemptions that vary by jurisdiction.
Where can I find my state's rate?
The US Census Bureau's American Community Survey reports median real estate taxes paid and median home value for each state and county. Dividing the median tax by the median value gives an approximate effective rate. Your county assessor or treasurer publishes the exact millage and assessment ratio for your specific parcel.
Official sources
- US Census Bureau: American Community Survey (median real estate taxes and home values).
- US Census Bureau: Wealth and Asset Ownership.
Reviewed by the CalculatorHub team, edited by James Graham, 19 June 2026. See our methodology.