Janesville property tax, in one number.
The typical Janesville homeowner pays $3,736 a year on a $223,400 home. That's above the Rock County rate (1.60%) and well above the U.S. rate (0.94%).
Estimate my taxJanesville at a glance
Five numbers that shape a typical property tax bill here.
Property tax calculator
Enter a home value to see a typical yearly bill at Janesville's average effective rate, or pick another area.
- Bills are up, rates are down.The median tax paid rose from $3,277 in 2021 to $3,657 in 2024 (+12%), while home values rose 38%. That pushed the effective rate down.
- Mortgage or not, bills are similar.Homes with a mortgage paid a median $3,712, and homes owned outright paid $3,778.
- Share of income.The median bill equals about 5.1% of the median household income of $73,446.
The data, charted
Median tax paid & effective rate
Owners vs renters
Cities in Rock County
Janesville compared
| Area | Median tax | Home value | Rate |
|---|---|---|---|
| Janesville | $3,736 | $223,400 | 1.67% |
| Rock County | $3,703 | $231,600 | 1.60% |
| Wisconsin | $3,792 | $266,500 | 1.42% |
| United States | $3,119 | $332,700 | 0.94% |
Other cities in Rock County
Effective property tax rates nearby.
Nearby
- Rock County1.60% · $3,703
- Beloit1.57% · $2,454
- Winnebago County2.39% · $3,930
- Boone County2.18% · $4,735
- Dane County1.63% · $6,420
- Green County1.60% · $4,003
- Jefferson County1.46% · $4,005
- Walworth County1.33% · $4,036
Good to know
What is the property tax rate in Janesville?
The effective rate is about 1.67%. The median homeowner pays $3,736 a year on a home worth a median $223,400 (ACS 2020–2024). The legal tax rates set by each taxing unit are different numbers; the effective rate is what owners actually pay as a share of value.
How much is property tax on a $200,000 home in Janesville?
About $3,340 a year, or roughly $278 a month, at Janesville's average effective rate of 1.67%. Homestead, senior, veteran or other exemptions can lower the real bill, and a recent purchase or reassessment can raise it.
Why is my bill different from this estimate?
Your bill depends on your home's assessed value from the municipal assessor, the exact taxing units where you live (county, city, school district, special districts) and any exemptions you get. These figures are medians across all owner-occupied homes, not a bill for any address.
How current is this data?
It comes from the U.S. Census Bureau's American Community Survey 5-year estimates for 2020–2024, the latest release. Homeowners report the taxes they paid, so the numbers lag current bills by one to two years. We update the site when the Census Bureau publishes new estimates each December.
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