Property Taxes Explained: How They’re Calculated and Why They Matter

Property taxes are one of the biggest “non-mortgage” costs of homeownership. Even if you have a great interest rate, higher property taxes can push your total monthly housing cost higher than expected.

To estimate your annual and monthly property taxes, use the Property Tax Calculator.

How property taxes are calculated (simplified)

Most estimates follow the same core structure:

1. Start with a value (market value or assessed value)
2. Subtract exemptions (if any)
3. Multiply by a local tax rate

Example:

• Home value: $450,000
• Property tax rate: 1.10%
• Exemption: $0

Estimated annual tax ≈ $450,000 × 1.10% = $4,950

Assessed value vs market value

Some counties tax a property based on an assessed value, which may differ from market value. In those cases:

• use assessed value if you can find it, or
• use market value as a planning estimate

Exemptions (homestead and other reductions)

Many jurisdictions offer exemptions that reduce taxable value, such as:

• homestead exemption (primary residence)
• senior/disabled exemptions
• veteran exemptions

If you have an exemption amount, include it in the Property Tax Calculator to estimate the reduced bill.

How taxes affect your mortgage payment (escrow)

If your loan uses escrow, your lender collects property taxes monthly:

Monthly escrow estimate ≈ (Annual property taxes) / 12

That’s why two homes with the same price and interest rate can have very different total payments. Model the full monthly cost with the Mortgage Payment Calculator.

Planning tips for buyers

• Always estimate taxes before setting your max home price: Mortgage Affordability Calculator
• Budget for closing costs and prepaid escrows: Closing Costs Calculator
• Re-check taxes after purchasing: reassessments and local rate changes can increase the bill

FAQ

Why did my property taxes go up?

Taxes can rise due to reassessment, local budget changes, new construction/renovations, or changes in the tax rate.

Do lenders always require escrow?

Not always. Some loans require escrow, while others allow you to pay taxes directly. Escrow rules vary by loan type and down payment.

Are property taxes included in APR?

No. Property taxes are not typically included in mortgage APR. APR focuses on finance charges (interest plus certain fees).

How accurate is an online property tax estimate?

It’s a planning estimate. Exact taxes depend on assessed value and local rules. The goal is to prevent surprises in monthly housing cost.

How do property taxes affect affordability?

Higher taxes raise the monthly payment, reducing the home price you can comfortably afford. Use the Mortgage Affordability Calculator and include taxes.