Property tax is the biggest regional cost variable in US housing
Across all 50 states, effective property tax rates range from under 0.3% (Hawaii) to over 2.5% (New Jersey). On an identical $400,000 home, that's the difference between $1,200 a year and $10,000 a year. Property tax is the single biggest regional cost variable in American homeownership — larger than the variation in home prices, mortgage rates, or insurance costs.
When comparing home prices across states — say, a $500,000 home in Austin vs. a $500,000 home in suburban New Jersey — the monthly property tax can differ by $800+ per month. That's equivalent to financing $120,000 of extra home price at current rates. It's the hidden multiplier that makes low-priced homes in high-tax states more expensive than they look and high-priced homes in low-tax states more affordable than they look.
How property tax is calculated
The formula is straightforward: assessed value × tax rate = annual tax. The details matter:
- Assessed value is set by your county assessor and may equal market value (most states) or some fraction of it (some states use 50–70%). Reassessments happen every 1–5 years.
- Tax rate (millage rate) is set by your local jurisdictions combined — state, county, city, school district, special districts (fire, water, library). These can number 10+ taxing authorities, each adding their own slice.
- Exemptions can reduce your taxable value: homestead exemption for primary residences, senior exemptions, veteran exemptions, agricultural exemptions. These vary wildly by state and can save $100–$3,000 annually if you qualify.
The 10 highest property-tax states (and why)
As of the most recent Tax Foundation data, the highest average property tax rates are:
- New Jersey: 2.47% — combines high home values with high school spending.
- Illinois: 2.23% — heavy pension liabilities pushed onto property taxes.
- New Hampshire: 1.93% — no state income or sales tax; property tax funds everything.
- Vermont: 1.78% — small tax base, strong public services.
- Connecticut: 2.14% — wealthy suburbs with high school spending.
- New York: 1.73% — varies enormously by county; upstate can be 3%+.
- Texas: 1.68% — no state income tax; makes up for it with property tax.
- Nebraska: 1.63% — agricultural state with heavy property reliance.
- Wisconsin: 1.61% — strong education system funded by property tax.
- Ohio: 1.59% — varies heavily by county, especially Cuyahoga.
Notice the pattern: states without income tax (Texas, New Hampshire) or with high spending on public services (Illinois, Connecticut) lean heavily on property tax. States like Tennessee and Florida have low property tax because they fund services through sales tax and tourism.
The 10 lowest property-tax states
On the flip side, Hawaii (0.32%), Alabama (0.41%), Colorado (0.51%), Louisiana (0.55%), South Carolina (0.57%), Delaware (0.58%), West Virginia (0.58%), Utah (0.57%), Nevada (0.55%), and Wyoming (0.56%) all have effective rates under 0.6%. Hawaii's famously low rate is partially offset by the country's highest home prices, so absolute dollar amounts aren't as low as the percentage suggests.
Your monthly escrow payment
If you have a mortgage, your lender usually requires an escrow account for property taxes. You pay 1/12 of the annual tax bill each month as part of your total PITI (principal, interest, taxes, insurance) payment. The lender holds the money in escrow and pays your county directly when taxes come due — typically once or twice a year.
If your taxes rise at the next reassessment, your lender will recalculate your monthly escrow to keep the account funded. Most homeowners are shocked by a $150–300/month payment increase after reassessment. Use our mortgage payment calculator to see your full PITI breakdown with escrowed taxes and insurance.
How to appeal your assessment
If you think your assessed value is too high, you can appeal — and many homeowners who do succeed. The basic process:
- Get your property record.Request it from the county assessor's website or office. Verify every detail: square footage, bedrooms, bathrooms, lot size, year built, condition grade, features (garage, basement, fireplace). Errors here favor the county and reducing them is free money.
- Pull comparable sales.Find 3–5 homes that are similar to yours (same neighborhood, same general size and age) that sold within the last 12 months for less than your assessed value. Use Zillow, Redfin, or your county's public records.
- File within the deadline. Most counties have a 30–60 day window after assessment notices go out. Miss the deadline and you wait a full year.
- Present your case.Most informal appeals are handled via phone or email with the assessor's staff. If you're not satisfied, the formal appeal goes to a board of review — a 15-minute hearing where you present your evidence.
Success rates vary, but roughly 30–40% of appeals result in reductions of 10–20%. On a $500,000 home in a 2% state, a 15% reduction saves $1,500 a year — every year, compounding.
Caps and exemptions worth knowing
- Homestead exemption. Available in most states for your primary residence. Reduces taxable value by $5,000–$50,000 depending on state. File it — many first-time buyers forget.
- Senior freeze / 65+ exemption. Many states let homeowners over 65 freeze assessed value or apply age-based exemptions.
- Veteran exemption. Partial or full exemption in many states for disabled veterans or service members.
- Prop 13 (California) and similar caps.California caps annual assessed value increases at 2%, meaning long-term owners pay far less than new buyers. Prop 19 changed inheritance rules — if you're a California resident, the details are worth a conversation with a local CPA.
Related calculators
Property tax is one of four monthly costs in your total mortgage payment — see our mortgage calculator for the full PITI picture. Buying in a high-tax state? Check our affordability-by-city calculator to compare how far your income goes across metros when property tax varies.