Property Tax Calculator

Property tax is one of the largest ongoing costs of homeownership and varies enormously by location. Hawaii has the lowest effective rate in the US (around 0.3%), while New Jersey and Illinois exceed 2%. Even within a state, rates differ by county, school district, and city, so always check your specific assessor's office for the current millage rate.

The calculation is straightforward: annual tax = (assessed value − exemptions) × rate. Common exemptions include the homestead exemption (for primary residences), senior citizen exemptions, and veterans' exemptions. Apply for any exemption you qualify for — they can reduce your bill by hundreds or thousands per year.

Note that "assessed value" often differs from market value. Many counties assess at a fraction of market (e.g., 80%) or cap year-over-year increases (California's Prop 13 caps it at 2%). Check your assessment notice carefully and appeal if you believe it overstates your home's value.

Property taxes are typically paid through escrow with your mortgage, but you can also pay directly twice a year. They are usually deductible on federal taxes up to the SALT cap of $10,000 combined with state income taxes.

Property tax rates vary by a factor of 7 across US states, from about 0.28% in Hawaii to 2.23% in New Jersey. Within a state, rates vary further by city, school district and special assessment areas. Always check the millage rate and any voter-approved overrides for the specific parcel you are evaluating; the county assessor's website is the authoritative source. International readers should be aware that some countries (UK, France) use entirely different schemes such as council tax or taxe foncière.

The assessed value used for tax purposes is rarely the same as market value. Some jurisdictions (California's Proposition 13) cap annual assessment increases regardless of market appreciation. Others reassess on every sale, which can produce dramatic jumps for new buyers. Senior citizens, veterans, primary residence (homestead) and agricultural use often qualify for exemptions that lower the taxable base — always check whether you qualify and file the exemption paperwork on time.

Property tax bills typically fund local schools, police, fire, libraries, parks and infrastructure. This is why high-tax jurisdictions often have excellent public schools and well-maintained roads — you are paying for them directly. When comparing total cost of ownership across neighborhoods, factor in both the tax rate and the quality of services. A lower tax bill in a poorly funded district can be more expensive in the long run if it forces you to pay for private school or commute longer.

Property taxes are deductible on US federal income tax returns, but the SALT (state and local tax) cap introduced in 2017 limits the total state and local deduction to $10,000 per year. High-tax states have lobbied for relief; check current law before assuming a full deduction. Mortgage lenders typically escrow property tax payments into your monthly payment, which spreads the cost over 12 months rather than landing as one or two large bills per year.