What Does Millage Rate Mean and How is it Calculated

Property Tax Millage Calculator

This is often a percentage of market value (e.g., 50% or 100% depending on location).

Enter the total millage rate (sum of school, county, city, etc.).

Calculation Results

What Does Millage Rate Mean?

The term millage rate is the amount of property tax charged per $1,000 of the property's assessed value. The word "mill" comes from the Latin word "millesimum," meaning "thousandth." It is the standard unit used by local governments to calculate property tax liability.

Unlike a standard percentage tax rate (like sales tax), millage is expressed in mills. One mill represents one dollar in tax for every one thousand dollars of assessed property value.

Simple Conversion:
1 Mill = 0.001 (decimal)
1 Mill = 0.1% (percent)
1 Mill = $1.00 tax per $1,000 value

How is Millage Rate Calculated?

The millage rate for a specific property is usually a summation of various tax levies from different jurisdictions. Your total millage rate typically includes:

• County Government: Funds public safety, courts, and infrastructure.
• School District: Often the largest portion, funding local public education.
• Municipal/City: Funds local police, fire departments, and parks.
• Special Districts: Libraries, emergency services, or water districts.

To find your property tax, you apply the total millage rate to the assessed value of your home using this formula:

Tax = (Assessed Value × Millage Rate) ÷ 1,000

Assessed Value vs. Market Value

It is critical to distinguish between Market Value (what you could sell the house for) and Assessed Value (the value used for tax purposes). In many jurisdictions, the assessed value is only a percentage (assessment ratio) of the market value.

For example, if your home has a market value of $300,000 and your local assessment ratio is 50%, your Assessed Value is $150,000. You would enter $150,000 into the calculator above, not the full market price.

Real-World Example Calculation

Let's assume you own a home with an assessed value of $200,000. Your local tax breakdown is as follows:

• School District: 20 mills
• County: 5 mills
• City: 5 mills
• Total Millage Rate: 30 mills

The calculation would be:

($200,000 × 30) ÷ 1,000 = $6,000

In this scenario, your annual property tax bill would be $6,000.

Why Do Millage Rates Change?

Millage rates are set annually by local government bodies based on their budgetary needs. If a town needs to build a new school or repair roads, they may vote to increase the millage rate. Conversely, if property values in an area skyrocket (increasing the tax base), the government might lower the millage rate to keep the total tax revenue constant (a process sometimes called a "rollback").