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On the notice

What Is a Mill in Property Taxes? The $1 Per $1,000 Unit

FairAppeal Editorial Team · August 21, 2026 · 2 min read

On the notice

A mill in property taxes is a unit of rate: one mill equals one dollar of tax per one thousand dollars of taxable value. Millage is the stacked local rate written in those units. Changing the mill moves every house in the district. Changing one house's value moves only that bill.

Look up if you are overpaying.

How much tax is one mill on a property?

The formula is one mill = $1 per $1,000 of the value being taxed, which is the same as 0.001. The IAAO glossary calls a mill one-thousandth of one dollar. Ten mills is one percent. Twenty mills is two percent. The millage rate page is about the stacked local total; this page is about the unit those totals are written in.

Example: 10 mills on $200,000 of taxable value is $2,000 ($200,000 × 0.010 = $2,000). That round-number walkthrough is an example, not a district's adopted levy.

Is a mill the same as a millage rate?

No. A mill is the unit. A millage rate is how many of those units a city, a school, or a special district stacked on the parcel. A property tax appeal does not rewrite the mill. It is aimed at the value underneath. The property tax glossary keeps the unit next to the stack. You pay only if FairAppeal saves you money, and there are no upfront costs with Fair Appeal.