Rate Breakdown

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

How Property Tax Works in Ozaukee County

Property taxes in Ozaukee County are calculated based on the assessed value of your property and the combined millage rates (tax rates) set by local taxing authorities. Here’s how the process works:

• Assessment: The Ozaukee County Assessor's Office evaluates properties annually to determine their fair market value. Assessments are typically based on recent sales of comparable properties.
• Millage Rates: Tax rates (mill rates) are applied per $1,000 of assessed value. These rates are set by school districts, municipalities, and the county. For example, if your home is assessed at $300,000 and the combined mill rate is 20, your annual tax would be $6,000.
• Tax Calculation: Taxes = (Assessed Value × Mill Rate) ÷ 1,000. Adjustments may apply for exemptions or credits.

Available Exemptions

Ozaukee County offers several exemptions that can reduce your property tax burden:

• Homestead Exemption: Available to Wisconsin residents who own and occupy their primary residence as of January 1 of the tax year.
• Senior Citizen Exemption: Residents aged 65+ may qualify for a tax credit based on income limits. Apply with the Wisconsin Department of Revenue.
• Disability Exemption: Individuals with qualifying disabilities may be eligible for property tax relief under state programs.
• Veteran Exemptions: Veterans with service-connected disabilities or unremarried surviving spouses may qualify for exemptions or credits.

Check with the Ozaukee County Treasurer’s Office for eligibility requirements and application deadlines.

Payment Schedule & Deadlines

Ozaukee County property taxes are typically due in two installments:

• First Installment: Due by January 31 to your local municipal treasurer. This payment is an estimate, usually 50% of the prior year’s tax.
• Second Installment: Due by July 31 to the Ozaukee County Treasurer. This payment reflects the finalized tax amount after adjustments.

Late Payments: Penalties apply for missed deadlines, including interest charges (typically 1.5% per month). Delinquent taxes may result in a tax lien or foreclosure. Payment plans may be available—contact the County Treasurer for details.

Appealing Your Assessment

If you believe your property is overassessed, you can appeal in Ozaukee County:

• Step 1: Review your assessment notice, which is mailed in spring. Compare your valuation to similar properties.
• Step 2: Contact the Assessor’s Office to discuss discrepancies. Many issues are resolved informally.
• Step 3: File a formal appeal with the Board of Review by the deadline (usually in May). Provide evidence like recent appraisals or sales data.

For complex cases, consider hiring a property tax professional. Deadlines are strict, so act promptly.