Property Tax Calculator
Estimate Property Tax totals, payments, rates, and costs for financial planning.
This property tax calculator estimates your annual property tax bill by applying your local tax rate (often expressed as a mill rate or percentage) to your home's assessed value, which may differ from its market value depending on your local assessment rules.
Enter your home's assessed value and local tax rate, and the calculator returns your estimated annual property tax.
Worked Calculation Examples
| Scenario | Result | Calculation Step |
|---|---|---|
| $300,000 assessed value, mill rate 20 | $6,000/year | Tax = $300,000 × (20 ÷ 1000) = $6,000. |
| $450,000 assessed value, mill rate 15 | $6,750/year | Tax = $450,000 × (15 ÷ 1000) = $6,750. |
Assessed Value vs. Market Value
Assessed value is the figure your local government uses for tax purposes and is often a percentage of market value (or based on a reassessment cycle that lags behind current market prices), not necessarily what the home would sell for today - this is why two similarly priced homes in the same area can have different tax bills.
Understanding Mill Rates
Property tax rates are often expressed in mills, where one mill equals $1 of tax per $1,000 of assessed value. A mill rate of 20 on a $300,000 assessed home equals $6,000 in annual property tax (20/1000 x $300,000) - converting between mill rate and percentage rate is a common source of confusion when comparing tax rates across areas.
How to Use the Property Tax Calculator
- Open the Property Tax Calculator and enter the values requested in the input fields.
- Check the units, percentages, dates, or time periods before reading the answer.
- Review the instant result and adjust any value to compare another scenario.
- Use the formula, example, and FAQs below to understand how the property tax calculator works.
Frequently Asked Questions
How is property tax calculated?
Multiply your home's assessed value by your local property tax rate (expressed as a percentage or mill rate) to find your annual property tax bill.
What is a mill rate?
A mill rate is a property tax rate expressed as dollars of tax per $1,000 of assessed value - a mill rate of 20 means $20 of tax per $1,000 of assessed value, or 2%.
Is assessed value the same as market value?
Not always - assessed value is set by the local tax authority and may be a percentage of market value or based on a periodic reassessment, so it can lag behind or differ from what a home would actually sell for.
How do I use this property tax calculator?
Enter the known values, review the units or settings, and the calculator updates the result instantly. The formula and example on this page show how the answer is produced.
What does the Property Tax Calculator calculate?
Estimate Property Tax totals, payments, rates, and costs for financial planning. It is designed for fast browser-based calculations without sign-up, downloads, or manual spreadsheet setup.
What formula does this property tax use?
The formula is: Property Tax = Assessed Value × (Mill Rate ÷ 1000). A mill rate expresses tax owed per $1,000 of assessed value; the term comes from the Latin millesimum, meaning 'thousandth,' reflecting a unit of currency (one-tenth of a cent) once used in early American tax administration. Property tax itself is one of the oldest forms of taxation in recorded history, tracing back to ad valorem land levies in ancient Egypt and Rome, and it remains the primary funding source for local government services like schools and emergency services in the US precisely because real estate cannot be hidden or relocated, making it a stable, easily assessed tax base.
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Last updated: September 27, 2026.