Potosi, Grant County, Wisconsin Property Taxes
Property Taxes in Potosi, Wisconsin
Median Potosi, Wisconsin effective property tax rate: 1.09%, significantly lower than the national median of 1.02%, and lower than the Wisconsin state median of 1.43%.
Median Potosi, Wisconsin home value: $189,800
Median annual Potosi, Wisconsin tax bill: $2,058, lower than the national median property tax bill of $2,400.
How are property taxes in Grant calculated?
Property taxes in Potosi, Wisconsin are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding Potosi's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Potosi, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Potosi, Grant County, Wisconsin Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.09%
Estimate Property Tax Bill
$2,069
$1,920
How Does the Potosi Property Tax Calculator Work?
Use this Potosi property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Potosi's median effective tax rate of 1.09% — based on actual property records in Grant County — to generate your estimate.
Enter your property's estimated assessed value — the figure the local appraisal district uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Potosi's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.
Your bill may vary by ZIP code within Potosi: rates range from 1.09% in 53820 to 1.09% in 53820, primarily due to differences in school district levies and local assessment districts.
For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Potosi.
About Potosi Property Taxes
About Property Taxes in Potosi, Grant, Wisconsin
Potosi’s median effective property tax rate of 1.09% is higher than the Wisconsin state median of 1.43% and lower than the national median of 1.02%. This rate reflects the Grant County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.
Property tax rates are not uniform across Potosi. Homeowners in the 53820 ZIP code carry a median effective rate of 1.09%, while those in the same ZIP code pay 1.09%. This spread reflects how school district boundaries and local assessment districts are drawn across Grant County. Understanding which part of Potosi you live in can make a meaningful difference to your annual tax bill.
Potosi homeowners who believe their assessed value is too high can file a formal appeal with the local Tax Assessor before the May 25, 2026 deadline each year.
If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.
Property Tax Rates Across Potosi, Grant County, Wisconsin
As noted earlier, local government entities set tax rates, which can vary widely within a state.
Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.
While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.
Below, you can compare Potosi's effective property tax rate to other cities in Wisconsin and the median property tax rates in Wisconsin and the U.S.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Potosi Tax Rate
1.09%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Grant County Tax Rate
1.35%
Median Effective Wisconsin Tax Rate
1.43%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Potosi, Grant County, Wisconsin
| Zip | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 53820 | 0.96% | 1.03% | 1.09% | 1.16% | 1.23% |
Source: Ownwell
Property Tax Assessment Values Across Potosi, Grant County, Wisconsin
When examining property taxes in Potosi, Wisconsin, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Grant County assessor estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices are sent in the spring each year and typically reach your mailbox by the middle of the month. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill.
For example, the median home price in Potosi is $189,800, with tax bills ranging across the county. ZIP code 53820 has the highest median home price at $189,800.
Property Tax Assessment Values Across Potosi, Grant County, Wisconsin
Source: Ownwell
$100,250
$165,275
$230,300
Median Potosi Market Value
$189,800
Median Grant County Market Value
$175,400
Median Wisconsin Market Value
$237,700
Median United States Market Value
$235,294
Property Tax Assessment Values Across Potosi, Grant County, Wisconsin
| Zip | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 53820 | $99,040 | $135,000 | $189,800 | $248,100 | $365,900 |
Source: Ownwell
Property Tax Bills Across Potosi, Grant County, Wisconsin
How are property tax bills calculated in Potosi?
Property tax bills in Potosi are based on the assessed value of a home and the local tax rate set by taxing authorities. When a property’s market value changes, the assessed value can change too, which affects the final bill. For a home with a median price of $189,800, the property tax bill is influenced by how that value is assessed and the rates applied in Grant County.
What factors affect the amount homeowners pay?
Local budgets, school funding, and other public services all play a role in determining the tax rate. That means two homes with similar market values can still have different bills if their assessments or tax rates differ. In Potosi, the median property tax bill is $2,058, while bills can range from $1,397 at the 25th percentile to $4,367 at the 90th percentile.
How does this affect homeowners?
Because property taxes are tied to home value and local rates, homeowners may see their bills rise when assessments increase. Compared with the national median property tax rate of 1.02% and national median bill of $2,400, Potosi homeowners may pay more or less depending on their specific assessment and location.
Median Potosi Tax Bill
$2,058
Median Grant County Tax Bill
$2,384
Median Wisconsin Tax Bill
$3,453
Median United States Tax Bill
$2,400
Property Tax Bills Across Potosi, Grant County, Wisconsin
| Zip | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| 53820 | $979 | $1,397 | $2,058 | $2,898 | $4,367 |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | May 2 |
Links | |
|---|---|
| Grant Tax Assessor | |
| Website | landrecords.co.grant.wi.gov |