Property tax is the largest recurring cost of homeownership after the mortgage itself, yet most homeowners have no idea how their bill is calculated, whether their assessment is accurate, or that they have the right to appeal. The average American homeowner pays roughly $2,800–$3,500 per year in property taxes, but this varies enormously — from under $1,000 in some states to over $10,000 in others for equivalent homes.
The formula is straightforward: Assessed Value × Tax Rate (Mill Rate) = Annual Tax. A “mill” is one-tenth of a cent, or $1 per $1,000 of assessed value. A mill rate of 25 means $25 per $1,000 of assessed value. A home assessed at $300,000 with a 25-mill rate pays $7,500 per year.
| State | Effective Rate | Tax on $350K Home |
|---|---|---|
| Hawaii | 0.27% | $945 |
| Colorado | 0.51% | $1,785 |
| National Average | 1.07% | $3,745 |
| Texas | 1.68% | $5,880 |
| New Jersey | 2.23% | $7,805 |
Effective tax rates combine all local taxing jurisdictions (county, city, school district, special districts). Rates vary even within states. Use the Property Tax Calculator to estimate taxes for any location.
Your county assessor determines your property’s assessed value based on comparable sales, property characteristics (square footage, lot size, condition, improvements), and market conditions. Assessed value may differ from market value — some states assess at 100% of market value, others at 50–80%. Reassessments occur on varying schedules: annually in some jurisdictions, every 2–5 years in others, and only upon sale or improvement in a few states.
How to appeal your assessment: Roughly 30–40% of properties are over-assessed, and about 50% of owners who appeal receive a reduction. The process: (1) Review your property record card at the assessor’s office for factual errors (wrong square footage, extra bathroom counted, etc.). (2) Research recent comparable sales within 0.5 miles sold in the last 6–12 months. (3) File a formal appeal by the deadline (usually 30–90 days after assessment notice). (4) Present your evidence at a hearing. Even a 5% reduction on a $350,000 assessment saves $200–$400/year, every year.
Homestead exemption reduces the taxable value of your primary residence. Availability and amounts vary: Texas offers up to $100,000 off assessed value for school district taxes. Florida caps assessment increases at 3% per year (Save Our Homes). Many states offer additional exemptions for seniors (65+), veterans, disabled individuals, and agricultural/conservation use. You must apply for exemptions — they are not automatic. Check your county assessor’s website for available programs. Read our Home Insurance Guide for the other major recurring cost of ownership.
Property taxes are included in your mortgage escrow payment, meaning they are built into your monthly housing cost. A home with $6,000/year in property taxes adds $500/month to your payment. When comparing homes in different jurisdictions, the listed price is only part of the equation — a $300,000 home in a 2% tax district costs $6,000/year more in taxes than the same-priced home in a 0.5% district. Over 10 years, that is a $60,000 difference. Use the Home Affordability Calculator to factor taxes into your budget.
Estimate property taxes for any home in any location. Use the free Property Tax Calculator to compare tax burdens — no signup required.
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