What actually sets Wisconsin apart
The lottery and gaming credit is small but routinely missed by new buyers, because it attaches to the owner rather than the parcel. If your first bill after closing does not show it, contact the municipal treasurer rather than assuming the property does not qualify.
Property taxes in Wisconsin at a glance
- Average effective tax rate: 1.51% of home value per year
- Median home value: $247,400
- Estimated tax on a median-value home: $3,746 per year (about $312 per month)
- Rank by tax rate: 8th of 50, highest first
- Rank by amount actually paid: 15th of 50, highest first
- Where these figures come from: U.S. Census Bureau, American Community Survey 5-year estimates, for the Wisconsin statewide averages shown above — ACS 2019-2023 5-year estimates, last reviewed September 2026.
What the Wisconsin rate leaves out
Wisconsin is 8th of the fifty by rate and 15th by the bill a median-value owner receives — a shift of 7 places, and the $247,400 median home value is what causes it. The rate is a reasonable shorthand here, but it is not the whole answer, and both numbers are worth checking before comparing Wisconsin with anywhere else.
How Wisconsin works out what you owe
Municipal assessors value property locally, and the state calculates an equalized value for each municipality so that county and school levies can be shared fairly between them.
Levy limits restrict how much municipalities and counties can increase their levies without a referendum, tied largely to growth from new construction.
Exemptions Wisconsin homeowners should claim
Each of these reduces a Wisconsin bill every year you hold the property, and almost none are granted without a claim:
- Lottery and gaming credit: A credit against the bill on a primary residence, funded by lottery proceeds. It must be claimed, and it does not follow automatically when a property changes hands.
- School levy tax credit and homestead credit: The school levy credit is applied directly to the bill, while the income-tested homestead credit is claimed on the state income tax return by lower-income owners and renters.
Where you buy inside Wisconsin changes the bill
A statewide average hides its extremes. Where they show up in Wisconsin:
- Milwaukee County: the highest combined rates in the state, with the city of Milwaukee well above the surrounding suburbs
- Dane County: Madison, where fast appreciation and strong school funding referenda have pushed bills up quickly
- Waukesha County: the western suburbs, with lower rates and a long-standing draw for buyers leaving Milwaukee
Wisconsin and its neighbours
The same $247,400 — the Wisconsin median — taxed at each neighbouring state's average rate:
- Michigan at 1.28%: about $3,167 a year, roughly $579 less than the $3,746 a Wisconsin owner would pay on the same value.
- Minnesota at 1.04%: about $2,573 a year, roughly $1,173 less than the $3,746 a Wisconsin owner would pay on the same value.
- Iowa at 1.43%: about $3,538 a year, roughly $208 less than the $3,746 a Wisconsin owner would pay on the same value.
- Illinois at 2.07%: about $5,121 a year, roughly $1,375 more than the $3,746 a Wisconsin owner would pay on the same value.
Appealing a Wisconsin assessment
If the assessed value on your Wisconsin home overstates what it is worth, the route is an appeal to the municipal Board of Review, then the Department of Revenue or circuit court. The window is objections must be filed before the Board of Review's first session, which follows the open book period, and it is strict — missing it means waiting a full cycle.
Frequently asked questions
When are Wisconsin property taxes due, and when must exemption claims be filed?
Bills are issued in December. The full amount or the first instalment is due 31 January, with the second instalment due 31 July. The lottery and gaming credit is claimed with the municipal treasurer, generally by 31 January; the homestead credit is claimed with the state return.
Does this calculator use my exact Wisconsin county tax rate?
No — it applies the Wisconsin statewide average of 1.51%. Rates are set locally, and the spread inside Wisconsin is wide enough to matter: on a $247,400 home, $1,297 a year separates Wisconsin from an averagely taxed state before any county variation is counted. Check the parcel's own rate with its Wisconsin county before relying on this figure.
Reference sources
Related calculators
How this estimate is built
Principal and interest come from the standard amortization formula, worked through in full on the formula reference page. Property tax, insurance, PMI and loan-program figures layer on top from published assumptions — each one sourced, dated and listed on the methodology page. Every result here is an estimate built from public data, not a quote: confirm the specifics with a lender before relying on it.
For developers
This calculation is also available as a REST API and through an MCP server, both running the same engine as this page — so the figures match by construction rather than by convention. No key required.