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Updated 2025 Tax Year

Calumet County
Property Tax Guide

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

10 Official Sources
8 min read
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Quick Facts
Tax Rate
1-2% of assessed value, varies by school district and municipality
Exemptions
5+ Available
Section 1

How Property Tax Works

Calumet County, Wisconsin operates under a property tax system that funds essential local services including county government operations, schools, technical colleges, and various special districts. Property taxes are assessed annually based on the assessed value of real estate and personal property within the county. The effective tax rate in Calumet County is approximately 1-2% of assessed value, though this varies significantly depending on your specific location within the county due to different school districts, municipal boundaries, and special taxing districts.

The county follows Wisconsin's standard assessment practices, with properties assessed at fair market value without an assessment cap. Tax bills reflect levies from multiple jurisdictions - the county itself, your local municipality, school district, technical college district, and any applicable special districts. For the 2025 tax year, Calumet County's portion of the tax rate increased by $0.02 compared to the previous year, reflecting ongoing commitments to county services and infrastructure.

Section 2

What Makes Up Your Tax Bill

ComponentApproximate Rate RangeDescription
County Levy$2.00-4.00 per $1,000County government operations, sheriff, courts, social services
School District$8.00-12.00 per $1,000Local school district operations and debt service
Municipality$2.00-6.00 per $1,000City/town/village services (varies significantly)
Technical College$0.50-1.50 per $1,000Northeast Wisconsin Technical College district
Special Districts$0.25-2.00 per $1,000Fire districts, sanitary districts, library districts (if applicable)
Total Estimated$12.75-25.50 per $1,000Combined rate varies by location

Rates shown are for FY 2025 and vary significantly based on your specific location within Calumet County. The county portion increased by $0.02 per $1,000 assessed value for 2025. Contact the Calumet County Treasurer for exact rates in your taxing jurisdiction.

Section 3

When Are Property Taxes Due?

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

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 property taxes in Calumet County are additional tax assessments that occur when there are changes to property ownership, value, or use during the tax year. The most common triggers include property sales that result in reassessment, completion of new construction or major improvements, and changes in property classification or exemption status.

When a supplemental tax is triggered, the county assessor calculates the difference between the previous assessment and the new assessed value, then applies the current tax rate to determine the additional tax owed. For example, if you complete a $100,000 home addition in March and your total tax rate is $20 per $1,000 assessed value, you would owe an additional $2,000 in supplemental taxes prorated from the completion date through the end of the tax year. Supplemental tax bills are typically mailed within 60-90 days of the triggering event and become due within 30 days of the bill date.

Example Calculation

Example 1: $300,000 Home

  • Assessed Value: $300,000
  • Less: Homestead Credit (if applied for): -$1,200
  • Net Taxable Value: $298,800
  • Tax Rate (estimated): $18.00 per $1,000
  • Annual Tax: $5,378
  • Monthly Escrow: $448

Example 2: $600,000 Home

  • Assessed Value: $600,000
  • Less: Homestead Credit (if applied for): -$1,200
  • Net Taxable Value: $598,800
  • Tax Rate (estimated): $20.00 per $1,000
  • Annual Tax: $11,976
  • Monthly Escrow: $998

Example 3: $1,000,000 Home

  • Assessed Value: $1,000,000
  • Less: Homestead Credit (if applied for): -$1,200
  • Net Taxable Value: $998,800
  • Tax Rate (estimated): $22.00 per $1,000
  • Annual Tax: $21,974
  • Monthly Escrow: $1,831

Note: Tax credits shown require annual application and are not automatic. Actual rates vary by specific location within Calumet County.

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Section 5

Escrow & Property Taxes

Most homeowners with mortgages in Calumet County have their property taxes collected through monthly escrow payments to their lender. Your mortgage servicer estimates your annual tax liability, divides it by 12, and collects this amount with your monthly mortgage payment. The lender then pays your property taxes directly to Calumet County when they become due on January 31st.

Lenders typically maintain an escrow cushion of 1-2 months of tax payments to ensure adequate funds are available. Each year, your servicer will conduct an escrow analysis to compare actual tax payments with collected escrow funds, resulting in either a refund if you overpaid or an increase in monthly payments if taxes rose more than anticipated. You should receive an annual escrow statement showing all deposits, payments, and account balance. If you believe your escrow analysis is incorrect, you can request the tax bills and assessment information directly from Calumet County to verify the calculations.

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Section 6

Frequently Asked Questions

Q: When are property taxes due in Calumet County for the current tax year? A: Property taxes are due January 31st for full payment. There may be installment options available - contact the Calumet County Treasurer for specific payment schedules and any applicable deadlines.

Q: What tax credits are available and do I need to apply? A: Wisconsin offers several tax credits including the Homestead Credit for qualifying homeowners, Veterans Disability Credit, and Senior Citizens Credit. These are tax credits that reduce your tax bill and require annual application - they are NOT automatic. Application deadlines vary, so contact the county assessor's office for specific requirements and deadlines.

Q: How does the Homestead Credit work? A: The Homestead Credit is designed to limit assessment increases for qualifying homeowners, not reduce the market value itself. You must apply annually to receive this credit, and it provides tax relief based on your income and property value. This requires a separate application process through the Wisconsin Department of Revenue.

Q: How often are properties reassessed in Calumet County? A: Wisconsin requires properties to be assessed annually at fair market value. The county assessor reviews all properties each year, though not every property receives a physical inspection annually. Property owners receive assessment notices in spring and have appeal rights if they disagree with the assessed value.

Q: What are the penalties for late property tax payments? A: Late payments incur interest and penalties as specified by Wisconsin statute. Contact the Calumet County Treasurer for specific penalty rates and collection procedures, as these can compound quickly and may result in tax lien proceedings.

Q: Can I pay my property taxes online? A: Contact the Calumet County Treasurer's office or visit their official website to determine current online payment options, accepted payment methods, and any associated convenience fees.

Q: Why did my taxes increase if I made no improvements to my property? A: Tax increases can result from rising property values in your area, increased levies by taxing jurisdictions (county, school district, municipality), or changes in special district assessments. Your tax rate is comprised of multiple components that can change independently.

Q: How do special district taxes affect my bill? A: Depending on your location in Calumet County, you may pay taxes to fire districts, sanitary districts, library districts, or other special purpose districts. These appear as separate line items on your tax bill and vary significantly by geographic location within the county.

Verified Sources

Backed by 10 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
Tax Doc
2025 Tax Bill Update from Mayor Hammondmenashawi.gov
02
Mill Rates (2018-2025)co.calumet.wi.us
03
Common Council Meeting Agenda Tuesday, November 18, 2025 ...chiltonwi.gov
04
NEWSLETTERchiltonwi.gov
05
VILLAGE OFFICE HOURSvillageofstockbridgewi.gov
06
Tax Doc
Property Tax Bills | Village of Harrison Wisconsinharrison.wi.gov
07
Wisconsinirs.gov
08
County
Chapter 62 LAND DIVISION - Calumet Countyco.calumet.wi.us
09
County
ZONING Chapter 82 - Calumet Countyco.calumet.wi.us
10
County
Calumet Countyco.calumet.wi.us
All sources verified as of 2025 Tax Year

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