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Updated 2025 Tax Year

Marinette County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
0.93% effective rate after credits (varies by district due to different school districts and special taxing districts)
Exemptions
5+ Available
Section 1

How Property Tax Works

Marinette County, Wisconsin operates on a property tax system that funds essential local services including schools, county government, municipalities, and various special districts. Property taxes are the primary revenue source for these local governments, supporting everything from public safety and road maintenance to education and library services.

The effective property tax rate in Marinette County for the 2025 tax year is estimated at approximately 0.93% after applicable tax credits. However, actual rates vary significantly by location within the county due to different combinations of special taxing districts, school districts, and municipal boundaries. Property owners may also be subject to additional assessments for fire districts, sanitary districts, lake protection districts, or other special purpose units of government depending on their specific location.

Property taxes in Marinette County are assessed annually based on the fair market value of real estate as of January 1st. The Wisconsin Department of Revenue oversees assessment practices to ensure uniformity and fairness across all municipalities within the county.

Section 2

What Makes Up Your Tax Bill

ComponentRateDescription
County General~0.25%County operations, highways, health services
School District~0.45%K-12 education (varies by district)
Municipal~0.15%City/town/village services
Technical College~0.05%Northeast Wisconsin Technical College
Special Districts~0.03%Fire, sanitary, lake districts (location-dependent)
Total Effective Rate~0.93%After school tax credit of $1,413,553.32

Rates shown are estimates for FY 2025 and vary by specific location within Marinette County. The school tax credit rate is 0.016823714 mills as established under Act 15 provisions. Actual rates depend on which combination of taxing jurisdictions apply to your specific property address.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Marinette 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 taxes in Marinette County are additional property tax bills issued when there are mid-year changes that affect a property's assessed value or tax liability. Common triggers include new construction completion, property improvements, ownership transfers that remove existing exemptions, or the addition of previously omitted property to the tax roll.

Supplemental taxes are calculated by applying the current year's tax rate to the difference between the new assessed value and the previous assessed value, prorated for the remaining months in the tax year. For example, if a $50,000 addition is completed and assessed in July, the supplemental tax would be calculated on that $50,000 at the applicable tax rate for the remaining 6 months of the tax year.

Property owners receive a separate supplemental tax bill with its own due date, typically 30 days from the issue date. These taxes are in addition to the regular annual property tax bill and must be paid separately. Failure to pay supplemental taxes by the due date results in the same penalties and interest charges as regular property taxes.

Example Calculation

Example 1: $300,000 Home

  • Assessed Value: $300,000
  • School Tax Credit Applied: -$50 (estimated)
  • Net Taxable Value: $299,950
  • Annual Tax (0.93%): $2,790
  • Monthly Escrow: $233

Example 2: $600,000 Home

  • Assessed Value: $600,000
  • School Tax Credit Applied: -$100 (estimated)
  • Net Taxable Value: $599,900
  • Annual Tax (0.93%): $5,579
  • Monthly Escrow: $465

Example 3: $1,000,000 Home

  • Assessed Value: $1,000,000
  • School Tax Credit Applied: -$168 (estimated)
  • Net Taxable Value: $999,832
  • Annual Tax (0.93%): $9,298
  • Monthly Escrow: $775

Note: School tax credit amounts are estimates and require annual application. Actual tax credits vary based on state funding levels and individual circumstances. Other tax credits may be available and must be applied for separately.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Marinette County require borrowers to maintain an escrow account for property taxes and homeowners insurance. The lender collects monthly payments equal to 1/12th of the annual tax bill plus insurance premiums, holding these funds in a separate account to pay bills when due.

Property tax payments from escrow accounts are typically made by lenders in two installments: the first half by the January 31st deadline and the second half by July 31st. Lenders must provide annual escrow account statements showing all deposits, payments, and account balances. If your escrow account has a surplus over $50, the lender must refund the excess or offer to apply it to the following year.

Property owners should verify their tax payments are made timely by checking with the Marinette County Treasurer's office, as lenders occasionally make errors or late payments. You remain ultimately responsible for ensuring your property taxes are paid even when using an escrow account. If you pay your own taxes, remember that you can pay the full annual amount by January 31st or split payments with half due January 31st and half due July 31st.

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 Marinette County for 2025? A: First half payment is due January 31, 2025. Second half is due July 31, 2025. You may pay the full annual amount by January 31st. Reminder notices are mailed in September.

Q: What tax credits are available and do I need to apply? A: Wisconsin offers several tax credits including the School Levy Tax Credit (automatic), Lottery Credit (automatic), and First Dollar Credit (automatic). The Homestead Credit requires annual application and must be filed by your income tax deadline. Veterans may qualify for additional credits that require separate application.

Q: How does the Homestead Credit work? A: The Homestead Credit limits annual assessment increases to help control property tax growth for qualified homeowners. It does not reduce your property's market value but caps how much your assessment can increase year-over-year. You must apply annually through the Wisconsin Department of Revenue, and eligibility depends on income limits and residency requirements.

Q: How often are properties assessed in Marinette County? A: Wisconsin law requires all property to be assessed annually as of January 1st. However, physical inspections may not occur every year. The county must maintain assessments at fair market value and complete a full revaluation cycle periodically.

Q: Can I appeal my property assessment? A: Yes. You may file an appeal with your local Board of Review, typically meeting in May. Appeals must be filed by specific deadlines, usually within 30 days of receiving your assessment notice. You can also appeal to the Wisconsin Department of Revenue if unsatisfied with the Board of Review decision.

Q: What are the penalties for late payment? A: Wisconsin charges 1% interest per month on delinquent property taxes. Properties become tax delinquent if first half payments aren't made by January 31st or second half by July 31st.

Q: Can I pay my property taxes online? A: Contact the Marinette County Treasurer's office directly for current online payment options and accepted payment methods. Many Wisconsin counties offer online payment systems for property taxes.

Q: What are special district taxes? A: Special districts provide specific services like fire protection, sanitary services, or lake management. These appear as separate line items on your tax bill and rates vary by location depending on which districts serve your property.

Q: Do I qualify for any exemptions as a senior citizen or veteran? A: Wisconsin offers various exemptions and credits for seniors, veterans, and disabled persons. Most require annual application and have specific eligibility requirements including income limits, age requirements, or disability status. Contact the Marinette County Clerk for specific application procedures and deadlines.

Q: What if I disagree with special assessments on my property? A: Special assessments for improvements like roads or utilities have separate appeal processes from regular property taxes. You typically have 30 days from notification to file an appeal with the local governing body that imposed the assessment.

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