Millage Rate Calculator
Convert between mills, percent, and dollar amounts of property tax. Enter your home value and millage rate (or effective rate) — see your estimated annual and monthly property tax instantly, with the equivalent in the other format.
Annual Tax
$6,750
15.00 mills on $450,000
Monthly Tax
$563
Typically escrowed with mortgage
Effective Rate
1.500%
= 15.00 mills
Mills ↔ Percent quick reference
| Mills | Effective Rate | Tax on a $450,000 home |
|---|---|---|
| 5 mills | 0.50% | $2,250 |
| 10 mills | 1.00% | $4,500 |
| 15 mills | 1.50% | $6,750 |
| 20 mills | 2.00% | $9,000 |
| 25 mills | 2.50% | $11,250 |
| 30 mills | 3.00% | $13,500 |
Millage rates vary widely by county and school district. A typical effective property tax rate in the US is 10–20 mills (1.0–2.0%). Your county assessor publishes the exact millage rates for your address — combine the mills from all applicable districts (school, city, county, fire, etc.) for your total.
How to use it
A two-minute guide.
Start by entering your home value — this is your home's market value (typically close to what you'd sell for today). Your county may use a different "assessed value" for tax purposes; if so, enter the assessed value instead.
Toggle between Mills and Percent (%) at the top — most US counties publish property tax rates in mills, but Zillow, Redfin, and most consumer sites quote rates as percentages. The calculator handles both and shows the equivalent in the other format.
Enter your millage rate (mills) or effective rate (percent). The calculator shows your annual tax, monthly tax (typically escrowed with your mortgage), and a quick-reference conversion table at the bottom for common millage values.
How it works
The math behind the result.
A mill is one one-thousandth of a dollar — meaning 1 mill = $1 of tax per $1,000 of assessed property value. It's an old taxation term that survives because property tax bills are usually built from multiple overlapping millage rates (school district + city + county + special districts), and adding small whole numbers like "12 mills + 8 mills + 4 mills" is easier than adding small decimals like "1.2% + 0.8% + 0.4%".
The conversion is simple. 1 mill = 0.1% effective rate. So divide mills by 10 to get the effective percent, or multiply percent by 10 to get mills:
- 10 mills = 1.0% effective rate
- 15 mills = 1.5% effective rate
- 20 mills = 2.0% effective rate
- 25 mills = 2.5% effective rate (high-tax states like New Jersey)
Why some states use millage and others use percent. Historically, US property taxes were always quoted in mills (the term dates to the 18th century). Today, many states and counties — especially in the Northeast and Midwest — still use mills on official tax bills. Other states (California, Texas, Florida) tend to publish effective rates as percentages on consumer-facing sites. Both express the same underlying tax; the calculator above converts between them.
Your total millage is usually a sum. Most homeowners pay multiple millage rates simultaneously: one for the school district, one for the city, one for the county, and often one each for the fire district, water district, or library district. The county assessor publishes the full breakdown — your "total millage" is the sum of all applicable rates for your specific address.
Questions
Frequently asked.
Related tools