Property Taxes Explained: How They Work and How They’re Calculated

Property taxes are local taxes paid by homeowners and property owners to fund public services such as schools, police, fire departments, and infrastructure.

Understanding how they’re calculated can help you estimate your bill, plan your budget, and even challenge an assessment if necessary.

Property taxes are typically administered by your local county assessor’s office and collected by local taxing authorities.

Here’s how they work.

What Are Property Taxes?

Property taxes are based on the value of real estate you own, including:

• Homes
• Land
• Rental property
• Commercial property

Local governments use property taxes to fund services like:

• Public schools
• Road maintenance
• Emergency services
• Libraries
• Parks

Unlike federal income taxes, property taxes are determined at the local level.

Step 1: Determining Assessed Value

The first step in calculating property taxes is determining the assessed value of your property.

An assessor estimates your property’s value based on factors such as:

• Market sales of similar homes
• Property size and square footage
• Location
• Improvements or renovations
• Local market conditions

The assessed value may be equal to market value or a percentage of market value, depending on state law.

Example: If your home’s market value is $400,000 and your county assesses property at 90% of market value, your assessed value would be $360,000.

Step 2: Applying Exemptions

Many homeowners qualify for exemptions that reduce taxable value.

Common exemptions include:

• Homestead exemption
• Senior exemptions
• Veteran exemptions
• Disability exemptions

Exemptions lower the taxable portion of your property value.

Example: If your assessed value is $360,000 and you qualify for a $25,000 homestead exemption, your taxable value becomes $335,000.

Step 3: Applying the Tax Rate (Mill Rate)

Property taxes are calculated using a tax rate often called a mill rate.

A mill represents $1 of tax for every $1,000 of taxable property value.

To calculate your property tax:

Taxable value ÷ 1,000 × mill rate

Example: If your taxable value is $335,000 and the mill rate is 20 mills:

335,000 ÷ 1,000 × 20 = $6,700 in annual property taxes.

Mill rates vary by county, city, and school district.

Why Property Taxes Increase

Your property taxes may increase because of:

• Rising home values
• Reassessments
• Voter-approved levies
• Expiring exemptions
• Local budget increases

Even if tax rates stay the same, higher property values can increase your bill.

What Is a Reassessment?

Local governments periodically reassess property values to reflect current market conditions.

If your property value increases during reassessment, your property taxes may rise accordingly.

If you believe your assessed value is too high, you may have the right to appeal.

Are Property Taxes Included in Your Mortgage?

If you have a mortgage, property taxes are often included in your monthly payment through an escrow account.

Your lender collects a portion each month and pays the annual tax bill on your behalf.

If property taxes increase, your monthly mortgage payment may rise.

Can You Deduct Property Taxes?

Property taxes may be deductible on your federal return if you itemize deductions.

They are claimed on Schedule A (Form 1040) and subject to the federal SALT deduction limit under rules set by the Internal Revenue Service.

Only certain property taxes based on assessed value qualify.

How to Estimate Property Taxes Before Buying

Before purchasing a home, you can estimate property taxes by:

• Reviewing the current tax bill
• Checking the local mill rate
• Asking how often reassessments occur
• Understanding exemption eligibility

Keep in mind that buying a home may trigger reassessment at the purchase price.

Example: If a home was assessed at $250,000 years ago but sells for $400,000, taxes may increase significantly after reassessment.

How to Lower Your Property Taxes

You may reduce your bill by:

• Applying for exemptions
• Appealing your assessment
• Verifying property records for errors
• Checking for senior or disability relief programs

Deadlines for appeals are usually limited.

💻 Electronic Filing Recommendation

If you itemize deductions, e-filing makes it easier to properly report property taxes.

Benefits include:

• Automatic SALT deduction limit tracking
• Real-time itemized vs standard deduction comparison
• Reduced math errors
• Faster refund processing

Most tax software ensures property tax deductions are correctly entered and limited under federal rules.

Property taxes are based on assessed value, local tax rates, and available exemptions.

Understanding how they are calculated helps homeowners budget accurately, evaluate purchases wisely, and take advantage of potential savings opportunities.