Annual tax A
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Estimated annual and monthly tax from assessed value and millage, plus a second-jurisdiction compare.
Page updated 2026-09-04.
Annual tax A
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Annual tax B
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B minus A
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Monthly A
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Two identically valued $380,000 homes in different tax jurisdictions -- one at an 18.4 mill rate, the other at 22.1 -- produce annual tax bills of $6,992.00 and $8,398.00, a difference of $1,406.00/year purely from location. That's $117.17/month more just from which side of a tax district line the home sits on.
A mill rate is tax per $1,000 of assessed value: annual tax = assessed value / 1,000 x mill rate. At 18.4 mills, $380,000 / 1,000 x 18.4 = $6,992. The mill rate itself is set by local taxing authorities (school district, county, municipality) and can vary significantly even between neighboring towns.
Monthly A ($582.67) is what typically gets escrowed into a mortgage payment -- this is the piece the Mortgage Payment & Amortization Calculator doesn't include, since that page is P&I only.
Mill rate times assessed value. Exemptions and appeals are not applied. Assessed value is frequently lower than market value (many jurisdictions assess at a fraction of market value, or reassess only periodically), and homestead exemptions, senior exemptions, or successful appeals can all reduce the taxable amount below what a naive market-value calculation would suggest.
This is a planning estimate for comparing two known mill rates, not a substitute for the county assessor's actual bill, which may include special district levies not captured in a single blended mill rate.
When shopping between two towns or counties, the mill rate difference matters as much as the price difference -- a cheaper home in a higher-mill-rate district can carry a similar total monthly cost to a pricier home in a lower-mill-rate one.
If you're comparing two homes at different prices and different mill rates, feed both scenarios into the Home Affordability Calculator to see how the tax difference affects what you can actually qualify for.
Buying mid-year? The Property Tax Proration Calculator splits the annual bill between buyer and seller at closing.
Mill rate is per $1,000 of assessed value: ($380,000 / 1,000) x 18.4 = $6,992.00. A mill is literally one-tenth of one percent, so an 18.4 mill rate is equivalent to a 1.84% effective tax rate on assessed value.
Because assessed value isn't always market value. Jurisdictions may assess at a percentage of market value, cap annual increases regardless of market changes, or apply homestead and other exemptions -- none of which this calculator applies automatically, since it takes assessed value as a direct input.
No. Mill rate times assessed value. Exemptions and appeals are not applied. If you qualify for a homestead, senior, or veteran exemption, enter the reduced assessed value after the exemption rather than full market value.
It's set by your local taxing authorities and published by the county or municipal assessor's office, usually as a combined rate covering school district, county, and municipal levies. It is not something this calculator looks up for you.
It's a reasonable planning estimate (annual tax / 12), but actual escrow calculations by a lender may include a cushion above the straight monthly average and get reconciled annually against the real bill.
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