Rate Breakdown

Property taxes in Winnebago County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Winnebago County

Property taxes in Winnebago County are based on the assessed value of your property and the combined millage rates (tax rates) set by local taxing authorities, such as school districts, municipalities, and the county. Here’s how the process works:

• Assessment: The Winnebago County Assessor’s Office evaluates your property’s market value annually. This assessed value is used to calculate your tax liability.
• Millage Rates: Tax rates are applied per $1,000 of assessed value. For example, if your home is valued at $200,000 and the combined millage rate is 20 mills, your annual tax would be $4,000.
• Tax Calculation: Your tax bill is determined by multiplying the assessed value (after exemptions) by the total millage rate.

Available Exemptions

Winnebago County offers several exemptions that can reduce your property tax burden. Eligibility requirements vary, so verify with the Assessor’s Office:

• Homestead Exemption: Reduces the taxable value for primary residences.
• Senior Citizen Exemption: Available to homeowners aged 65+ with income limits. May freeze or lower taxes.
• Disability Exemption: For individuals with permanent disabilities, offering partial tax relief.
• Veteran Exemptions: Veterans with service-connected disabilities or wartime service may qualify for reduced assessments.

Applications for exemptions must typically be filed by December 31 for the following tax year.

Payment Schedule & Deadlines

Winnebago County property taxes are due annually, with options for installment payments:

• Full Payment Deadline: Typically due by January 31. Late payments incur interest and penalties.
• Installment Plan: Taxes may be paid in two installments—the first half by January 31 and the second half by July 31.
• Late Payments: Delinquent taxes accrue interest at 1.5% per month and may result in a tax lien or foreclosure if unpaid for extended periods.

Payments can be made online, by mail, or in person at the Winnebago County Treasurer’s Office.

Appealing Your Assessment

If you believe your property’s assessed value is inaccurate, you can appeal:

• Step 1: Contact the Winnebago County Assessor’s Office to discuss your valuation. Errors may be corrected without a formal appeal.
• Step 2: File a written appeal with the Board of Review by the deadline (usually in May or June). Provide evidence, such as recent comparable sales or an independent appraisal.
• Step 3: Attend the hearing to present your case. The Board will issue a decision, which can be further appealed to the Wisconsin Department of Revenue if necessary.

Deadlines and requirements are strict, so act promptly if you disagree with your assessment.