Property Tax Calculator
Estimate your annual and monthly property tax by state, including homestead exemptions and assessment ratios.
Up to $50,000 (primary residence)
Tax Breakdown
Property Tax Comparison by State
| State | Avg Rate | Your Tax | Monthly |
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Last reviewed: July 3, 2026 · By the askdoss Editorial Team. This is a planning estimate, not financial advice or a quote.
Property taxes are one of the largest recurring costs of owning a home, yet they are also one of the hardest to predict, because the amount you owe depends on where the property sits. This calculator gives you a good-faith estimate of your annual property-tax bill from two inputs: the value of the home and a local tax rate. It is a planning tool, not a substitute for the official figure your county assessor or closing statement will show. Use it to sanity-check a monthly budget or compare two homes in different areas, then confirm the exact number with your county before you rely on it.
How this calculator works
The calculator applies the same basic formula that local governments use:
Assessed value × local tax rate = annual property tax
Two things drive the result:
- Assessed value. This is the taxable value your local assessor assigns to the property. It is often, but not always, close to market value — many jurisdictions assess at a fraction of market value or apply caps on how fast the assessment can grow. The calculator lets you enter a home value as a stand-in for assessed value.
- Local rate (millage or effective rate). Some areas quote a “millage” rate (dollars of tax per $1,000 of value); others are described as an “effective rate” (tax paid as a percentage of the home’s value). The calculator uses an effective-rate style input so a single percentage can stand in for the combined city, county, and school-district levies.
Rates vary enormously. The national average effective property-tax rate on single-family homes is 0.9% (ATTOM, 2025 tax year, published April 2026) of home value, but that average hides a wide spread. On the high end, New Jersey sits near 2.2%; on the low end, Hawaii is around 0.3% and Alabama near 0.4%. — figures as of the most recent Tax Foundation data (2024/2025). See the Tax Foundation property-tax data. Because two counties in the same state can differ substantially, always replace the default rate with your own county’s rate for a meaningful estimate.
Why property taxes vary so much
Three structural differences explain most of the gap between a low-tax and a high-tax address:
- Assessment method. Jurisdictions differ in how they translate market value into taxable value. Some assess at full market value; others use an assessment ratio (for example, taxing only a set percentage of value) or apply assessment caps that limit annual increases. Two homes with the same sale price can carry very different taxable values.
- What the taxes fund. Property taxes are the primary funding source for local services — schools, police, fire, roads, libraries. Areas with well-funded school districts or few alternative revenue sources tend to carry higher rates.
- Exemptions and reassessment rules. Available exemptions (below) reduce the taxable base, and some states reassess a property to current market value when it changes hands. In those states, a long-time owner and a brand-new buyer on the same street can owe very different amounts for identical homes.
Homestead & other exemptions
Many states and counties offer exemptions that lower the taxable value of a home and, therefore, the tax bill. The most common is the homestead exemption, which reduces the assessed value of a property that is the owner’s primary residence. Others may exist for seniors, veterans, people with disabilities, agricultural land, or energy-efficiency improvements.
Eligibility rules, dollar amounts, and application deadlines are set locally and change often, so this page does not quote specific exemption figures. To find what applies to you, contact your county assessor’s (or appraiser’s) office — most publish exemption lists and application forms online. An exemption you qualify for but never file for is money left on the table, so it is worth checking before your first tax bill.
Frequently Asked Questions
How are property taxes calculated?
Your local assessor sets a taxable (assessed) value for the property, and the taxing authorities apply their combined rate to it. In formula terms: assessed value × total local rate = your annual tax. Exemptions are subtracted from the assessed value before the rate is applied.
Are property taxes included in my mortgage payment?
Often, yes. Many lenders collect property taxes (and homeowners insurance) monthly through an escrow account and pay the tax bill on your behalf when it comes due. If you have an escrow, your monthly mortgage payment already includes roughly one-twelfth of the annual tax. Owners without escrow pay the county directly, usually once or twice a year.
Can I appeal my property-tax assessment?
Usually. If you believe your assessed value is too high — for example, it exceeds what the home would sell for, or comparable homes are assessed lower — most jurisdictions let you file an appeal with the assessor or a review board within a set window after assessments are mailed. Check your assessment notice for the deadline and required evidence.
Do my property taxes go up when I buy a home?
It depends on the state. In some states, a sale triggers a reassessment to current market value, which can raise the taxable value (and the bill) above what the prior owner paid. In others, assessments follow their own schedule regardless of sale. Ask your agent or the county how reassessment on sale works locally before you finalize a budget.
Why is the calculator’s estimate different from my actual bill?
The tool uses a single effective rate as a stand-in for what is really a stack of local levies, and it does not know your specific assessed value or exemptions. Treat its output as a ballpark and confirm the exact figure with your county assessor or closing statement.
Is the property-tax rate the same across my whole state?
No. Rates are set at the local level, so counties, cities, and school districts within one state can differ widely. Always use your specific county’s rate, not a statewide average.
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