How Property Taxes Are Calculated
Property tax is calculated by multiplying your home's assessed value by the local tax rate (mill rate). The assessed value may differ from market value depending on your state's assessment ratio. Some jurisdictions offer exemptions (homestead, senior, veteran, disability) that reduce the taxable value. Property taxes fund local schools, fire departments, roads, and government services.
Property Tax Formula
Annual Tax = (Market Value x Assessment Ratio - Exemptions) x Tax Rate
Where:
Market Value = Your home's estimated market value
Assessment Ratio = Percentage of market value used for tax (varies by state)
Exemptions = Homestead and other tax exemptions
Tax Rate = Local property tax rate (mill rate)
Property Tax Estimation Example
Given
Home Value
$350,000
Assessment Ratio
100%
Tax Rate
1.1%
Exemptions
$25,000 homestead
Calculation Steps
- 1Assessed value: $350,000 x 100% = $350,000
- 2Taxable value: $350,000 - $25,000 (homestead) = $325,000
- 3Annual property tax: $325,000 x 1.1% = $3,575
- 4Monthly escrow: $3,575 / 12 = $297.92
Result
On a $350,000 home with a $25,000 homestead exemption at a 1.1% tax rate, your annual property tax is $3,575 or about $298 per month.
Average Property Tax Rates by State (2026)
| State | Effective Rate | Annual Tax on $350K Home |
|---|---|---|
| New Jersey | 2.23% | $7,805 |
| Illinois | 2.08% | $7,280 |
| Connecticut | 2.01% | $7,035 |
| New Hampshire | 1.93% | $6,755 |
| Vermont | 1.83% | $6,405 |
| Texas | 1.68% | $5,880 |
| National Average | 1.10% | $3,850 |
| Colorado | 0.51% | $1,785 |
| South Carolina | 0.57% | $1,995 |
| Alabama | 0.41% | $1,435 |
| Hawaii | 0.28% | $980 |
Common Property Tax Exemptions
- Homestead exemption: Reduces taxable value for primary residence ($25,000-$100,000+ depending on state)
- Senior citizen exemption: Additional reduction for homeowners over 65
- Veteran exemption: Partial or full exemption for military veterans, especially disabled vets
- Disability exemption: For homeowners with qualifying disabilities
- Agricultural exemption: Reduced rates for land used for farming
- Property tax freeze: Some states freeze assessed values for seniors (e.g., Texas over 65)
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SALT Deduction Cap
The State and Local Tax (SALT) deduction is capped at $10,000 for federal income tax purposes. This means if your combined property tax and state income tax exceeds $10,000, you cannot deduct the excess on your federal return. This cap significantly impacts homeowners in high-tax states like New Jersey, Connecticut, and New York.
How to Lower Your Property Tax Bill
- Apply for all available exemptions (homestead, senior, veteran)
- Challenge your assessment if it exceeds market value (success rate is 30-40%)
- Review your tax bill for errors in lot size, square footage, or features
- Check if neighboring comparable homes have lower assessments
- File an appeal before the deadline (usually 30-90 days after assessment notice)
- Consider hiring a property tax consultant for high-value properties