Rate Breakdown

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

How Property Tax Works in Columbia County

Property taxes in Columbia County are calculated based on the assessed value of your property and the millage rate applied by local taxing authorities. The county assessor determines the fair market value of your property, which is then multiplied by the state-assigned assessment ratio (currently 100% in Wisconsin) to determine the assessed value. This assessed value is used to calculate your tax bill.

The millage rate is the amount per $1,000 of assessed value that is levied as tax. It is set by local governments, school districts, and other entities. Your total tax bill is the sum of these rates multiplied by your assessed value. For example, if your home is assessed at $200,000 and the total millage rate is 20 mills, your annual tax would be $4,000.

Available Exemptions

Columbia County offers several property tax exemptions to eligible homeowners:

• Homestead Exemption: Available to primary residents, this exemption reduces the taxable value of your property.
• Senior Citizen Exemption: Seniors aged 65 and older may qualify for a reduction in property taxes based on income limits.
• Disability Exemption: Individuals with disabilities may be eligible for tax relief, depending on their income and disability status.
• Veteran Exemption: Veterans with service-connected disabilities may qualify for property tax exemptions or credits.

To apply for exemptions, contact the Columbia County Treasurer’s Office with the required documentation.

Payment Schedule & Deadlines

Property tax payments in Columbia County are typically due in two installments:

• The first installment is due by January 31.
• The second installment is due by July 31.

If you miss a payment deadline, penalties and interest will be applied. Late payments incur a 1.5% monthly interest charge. For payment options, you can pay online, by mail, or in person at the Treasurer’s Office. Payment plans may be available for those experiencing financial hardship.

Appealing Your Assessment

If you believe your property assessment is incorrect, you have the right to appeal. Here’s how the process works in Columbia County:

• Informal Review: Contact the assessor’s office to discuss your concerns and request a review of your assessment.
• Formal Appeal: If unresolved, file a formal appeal with the Board of Review by the deadline (typically in May). Provide supporting evidence, such as comparable property values or recent appraisals.
• Hearing: Attend the Board of Review hearing to present your case. The board will make a decision based on the evidence provided.

For assistance, consult the Columbia County Assessor’s Office or a property tax professional.