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Updated 2025 Tax Year

Polk County
Property Tax Guide

Everything you need to know about property taxes in Polk County, WI. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
Quick Facts
Tax Rate
Approximately 1% of assessed value (varies by municipality and special districts within Polk County)
1st Due
Jan 31
2nd Due
Jul 31
Exemptions
5+ Available
Section 1

How Property Tax Works

Polk County, Wisconsin operates under a property tax system that funds essential local services including public safety, schools, county operations, and various special districts. Property taxes are the primary revenue source for local governments, with the county collecting taxes on behalf of multiple taxing jurisdictions including the county itself, municipalities, school districts, and special purpose districts.

The effective tax rate in Polk County varies significantly by location within the county due to overlapping taxing districts, but generally ranges around Wisconsin's statewide average of approximately 1% of assessed value. Your actual tax rate depends on which municipality, school district, and special taxing districts (such as fire protection or lake districts) serve your property. The county assessor determines property values based on fair market value, with assessments conducted on a rotating schedule throughout different municipalities within the county.

Section 2

What Makes Up Your Tax Bill

ComponentApproximate RateDescription
County GeneralVariesCounty operations, public safety, health services
MunicipalVaries by City/TownLocal government services, varies significantly by municipality
School DistrictVaries by DistrictK-12 education funding, largest component for most properties
Technical College~0.15-0.25 millsWisconsin Indianhead Technical College district
Special DistrictsVaries by LocationFire protection, lake districts, drainage districts where applicable
Total Effective Rate~18-25 millsVaries significantly by specific location within county

Note: These rates apply to the 2025 levy year (taxes payable in 2026). One mill equals $1 per $1,000 of assessed value. Your actual rate depends on the specific combination of taxing districts serving your property.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Polk County, property taxes are due in two installments:

First Installment
Jan 31
Delinquent after Dec 10
Second Installment
Jul 31
Delinquent after Apr 10
Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes in Wisconsin are relatively uncommon compared to other states. However, additional tax bills may be issued when significant changes occur to a property after the main assessment period. This can include substantial new construction completed after the assessment date, major improvements that weren't captured in the regular assessment, or corrections to assessment errors.

When supplemental taxes are levied, they are calculated by applying the current tax rates to the additional assessed value created by the change. For example, if you complete a $50,000 home addition after the assessment date and your total effective tax rate is 20 mills, you could receive a supplemental bill for approximately $1,000 ($50,000 × 0.020). These supplemental assessments are prorated based on the portion of the tax year remaining when the improvement was completed.

Example Calculation

Example 1: $300,000 Home (with typical tax credits)

  • Assessed Value: $300,000
  • Less: School Levy Tax Credit: -$1,200
  • Less: First Dollar Credit: -$300
  • Net Taxable Value: $298,500
  • Tax Rate: 20.0 mills
  • Annual Tax: $5,970
  • Monthly Escrow: $498

Example 2: $600,000 Home (with typical tax credits)

  • Assessed Value: $600,000
  • Less: School Levy Tax Credit: -$1,200
  • Less: First Dollar Credit: -$300
  • Net Taxable Value: $598,500
  • Tax Rate: 22.0 mills
  • Annual Tax: $13,167
  • Monthly Escrow: $1,097

Example 3: $1,000,000 Home (with typical tax credits)

  • Assessed Value: $1,000,000
  • Less: School Levy Tax Credit: -$1,200
  • Less: First Dollar Credit: -$300
  • Net Taxable Value: $998,500
  • Tax Rate: 23.0 mills
  • Annual Tax: $22,966
  • Monthly Escrow: $1,914

Note: Tax credits shown require annual application and amounts vary. Rates vary by specific taxing districts.

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Section 5

Escrow & Property Taxes

Most mortgage lenders require property tax escrow accounts, where you pay a portion of your annual tax bill with each monthly mortgage payment. Lenders typically collect 1/12 of your annual tax bill plus a cushion amount (usually 2 months) to ensure adequate funds are available when taxes are due. In Polk County, taxes are due in two installments: the first payment is due February 2, 2026, and the second half is due July 31, 2026.

Your lender will receive tax bills directly from Polk County and make payments on your behalf from your escrow account. The lender is required to provide you with an annual escrow analysis showing how your money was used and any adjustments needed for the coming year. If your tax bill increases significantly due to reassessment or rate changes, your monthly escrow payment may be adjusted upward. You can verify that your taxes have been paid by checking the Polk County Treasurer's online tax lookup system.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Polk County? A: For the 2025 tax year (taxes payable in 2026), the first installment is due February 2, 2026, and the second installment is due July 31, 2026. The county does not accept payments before February 2nd.

Q: What tax credits are available and do I need to apply? A: Wisconsin offers several tax credits including the School Levy Tax Credit and First Dollar Credit, but most require annual application. The Homestead Credit is available for qualifying homeowners and must be applied for each year. Contact the Wisconsin Department of Revenue or your local assessor for application requirements and deadlines.

Q: How does the Homestead Credit work? A: The Homestead Credit doesn't reduce your property's assessed value - instead, it caps how much your assessment can increase year-over-year (typically 10% for qualifying properties). This limits assessment growth rather than reducing market value, and you must file annually to maintain eligibility.

Q: How often is my property reassessed? A: Wisconsin law requires properties to be assessed annually, but Polk County may use a rotating schedule for different municipalities. You'll receive notice if your assessment changes significantly, and you have the right to appeal if you believe it's incorrect.

Q: What happens if I pay my taxes late? A: Late payments incur interest and penalty charges. Interest accrues monthly on unpaid balances, and additional penalties may apply. Contact the Polk County Treasurer's office for specific penalty rates and payment options if you're unable to pay on time.

Q: Can I pay my property taxes online? A: Yes, Polk County accepts online property tax payments. Visit the county treasurer's website to access the online payment system, though payments are not accepted before February 2nd for the current tax year.

Q: Why do special district taxes vary so much within the county? A: Properties may be located within different combinations of fire districts, lake management districts, drainage districts, or other special purpose districts. Each provides specific services to properties within their boundaries and levies taxes accordingly.

Q: How do I appeal my property assessment? A: Assessment appeals must typically be filed by specific deadlines (often in June or July). Contact your municipal assessor first for an informal review, or file a formal appeal with the Board of Review. The Wisconsin Department of Revenue provides detailed appeal procedures and deadlines.

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