Oconomowoc, Waukesha County, Wisconsin Property Taxes

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Property Taxes in Oconomowoc, Wisconsin

Median Oconomowoc, Wisconsin effective property tax rate: 1.06%, slightly higher than the national median of 1.02%, and lower than the Wisconsin state median of 1.43%.
Median Oconomowoc, Wisconsin home value: $469,800
Median annual Oconomowoc, Wisconsin tax bill: $4,694, higher than the national median property tax bill of $2,400.

How are property taxes in Waukesha calculated?

Property taxes in Oconomowoc, Wisconsin are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.

Understanding Oconomowoc's property tax system, exemptions, and reduction opportunities can lead to significant savings. Regardless of where you live in Oconomowoc, knowing local tax details benefits homeowners and investors.

Last Updated April 13, 2026

Oconomowoc, Waukesha County, Wisconsin Property Tax Bill Calculator

Property Assessed Value

$100,000

$1,500,000

$3,000,000

Median Effective Tax Rate

1.06%

Estimate Property Tax Bill

$4,980

$4,621

How Does the Oconomowoc Property Tax Calculator Work?

Use this Oconomowoc property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and our calculator applies Oconomowoc's median effective tax rate of 1.06% — based on actual property records in Waukesha County — to generate your estimate.

Enter your property's estimated assessed value — the figure the local assessor uses to calculate your bill, which reflects any exemptions you hold and is typically lower than your home's market value. Our calculator applies Oconomowoc's median effective rate across all local levies, providing a more accurate estimate than applying a single county millage rate.

Your bill may vary by ZIP code within Oconomowoc: rates range from 1.06% in 53066 to 1.06% in 53066, primarily due to differences in school district levies and local assessment districts.

For a more precise estimate, scroll down to explore ZIP code-level tax rate trends across Oconomowoc.

About Oconomowoc Property Taxes

About Property Taxes in Oconomowoc, Waukesha, Wisconsin

Oconomowoc's median effective property tax rate of 1.06% is lower than the Wisconsin state median of 1.43% and higher than the national median of 1.02%. This rate reflects the Waukesha County base levy combined with local school district levies and special assessment districts that vary by subdivision throughout the city.

Property tax rates are not uniform across Oconomowoc. Homeowners in the 53066 ZIP code carry a median effective rate of 1.06%, while those in the same ZIP also pay 1.06%. This spread reflects how school district boundaries and local assessment districts are drawn across Waukesha County. Understanding which part of Oconomowoc you live in can make a meaningful difference to your annual tax bill.

Oconomowoc homeowners who believe their assessed value is too high can file a formal appeal with the Tax Assessor before the May 25, 2026 deadline each year.

If your estimated bill above seems higher than expected, Ownwell can review your assessment and protest on your behalf. You only pay if we save you money.

Property Tax Rates Across Oconomowoc, Waukesha County, Wisconsin

As noted earlier, local government entities set tax rates, which can vary widely within a state.

Why? Because annually, each county estimates its required budget to provide services and divides that by the total value of all taxable property within its jurisdiction. This calculation results in the property tax rate.

While there are votes and laws involved in setting tax rates and budgets, in a nutshell, this is the annual process.

Below, you can compare Oconomowoc's effective property tax rate to other cities in Wisconsin and the median property tax rates in Wisconsin and the U.S.

Property Tax Rates Across Oconomowoc, Waukesha County, Wisconsin

Source: Ownwell

0.77%

1.16%

1.55%

Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.

Median Effective Oconomowoc Tax Rate

1.06%

Median Effective Waukesha County Tax Rate

1.05%

Median Effective Wisconsin Tax Rate

1.43%

Median Effective United States Tax Rate

1.02%

Property Tax Rates Across Oconomowoc, Waukesha County, Wisconsin

Zip	10th Percentile	25th Percentile	Median Tax Rate	75th Percentile	90th Percentile
53066	0.86%	0.88%	1.06%	1.07%	1.11%

Source: Ownwell

Property Tax Assessment Values Across Oconomowoc, Waukesha County, Wisconsin

When examining property taxes in Oconomowoc, Wisconsin, understanding the distinction between "market value" and "assessed value" is crucial.

The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Waukesha County appraisal district estimates the market value for tax purposes.

The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.

Assessment notices:

In Waukesha County, assessment notices are sent in the spring each year. They'll typically reach your mailbox by the middle of the month.

Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill. By providing insights into how assessed and market values are determined, this section helps property owners navigate their tax responsibilities and understand the valuation processes affecting their property taxes in Oconomowoc.

For example, the median home price in Oconomowoc is $469,800, with tax bills ranging significantly across the county. 53066 has the highest median home price at $469,800.

Property Tax Assessment Values Across Oconomowoc, Waukesha County, Wisconsin

Source: Ownwell

$180,700

$389,800

$598,900

Median Oconomowoc Market Value

$469,800

Median Waukesha County Market Value

$390,000

Median Wisconsin Market Value

$237,700

Median United States Market Value

$235,294

Property Tax Assessment Values Across Oconomowoc, Waukesha County, Wisconsin

Zip	10th Percentile	25th Percentile	Median Home Price	75th Percentile	90th Percentile
53066	$259,800	$342,625	$469,800	$634,675	$1,048,980

Source: Ownwell

Property Tax Bills Across Oconomowoc, Waukesha County, Wisconsin

Property tax bills in Oconomowoc are based on the assessed value of a home and the local tax rate set by taxing authorities in Waukesha County. When a property’s market value rises, the assessed value can increase as well, which may lead to a higher tax bill. The median home price is $469,800, and the median property tax bill is $4,694, which is above the national median property tax bill of $2,400 and the national median property tax rate of 1.02%.

Several factors affect the final bill, including the home’s assessed value, local budgets, and the tax rates used by different jurisdictions. Bills can vary widely across homeowners, with the 25th percentile at $3,426, the 75th percentile at $6,292, and the 90th percentile at $9,765. For homeowners, this means property taxes can represent a significant ongoing cost, especially when home values and local spending increase.

Property Tax Bills Across Oconomowoc, Waukesha County, Wisconsin

Source: Ownwell

$1,533

$4,272

$7,011

Median Oconomowoc Tax Bill

$4,694

Median Waukesha County Tax Bill

$4,123

Median Wisconsin Tax Bill

$3,453

Median United States Tax Bill

$2,400

Property Tax Bills Across Oconomowoc, Waukesha County, Wisconsin

Zip	10th Percentile	25th Percentile	Median Tax Bill	75th Percentile	90th Percentile
53066	$2,603	$3,426	$4,694	$6,292	$9,765

Source: Ownwell

Don't miss the deadline to appeal!

Dates
Appeal Deadline	May 20

Links
Waukesha Tax Assessor
Website	tax.waukeshacounty.gov

Frequently Asked Property Tax Questions in Oconomowoc, Wisconsin

How are property taxes calculated in Oconomowoc, Wisconsin?

Property taxes in Oconomowoc, Wisconsin are calculated by multiplying your property's assessed value by the applicable tax rate set by local taxing authorities. The assessed value is determined by the county assessor and may differ from your property's market value depending on local assessment ratios and exemptions.

How do I appeal my property taxes in Oconomowoc, Wisconsin?

To appeal your property taxes in Oconomowoc, Wisconsin, you typically need to file a formal protest or appeal with your local appraisal district or assessor's office by the stated deadline. You'll need evidence such as comparable sales, a recent independent appraisal, or documentation of property condition issues. Ownwell can handle this entire process for you.

What property tax exemptions are available in Oconomowoc, Wisconsin?

Common property tax exemptions in Oconomowoc, Wisconsin include homestead exemptions for primary residences, senior citizen exemptions, veteran exemptions, and disability exemptions. Exemption amounts and eligibility requirements vary by county. Contact your local appraisal district or check Ownwell for details specific to your property.

When are property taxes due in Oconomowoc, Wisconsin?

Property tax deadlines in Oconomowoc, Wisconsin vary by county but typically include an assessment notice period in spring or early summer, followed by an appeal deadline, and a tax payment due date in the fall or winter. Check with your county assessor's office for specific dates in your area.

How can Ownwell help reduce my property taxes in Oconomowoc, Wisconsin?

Ownwell provides professional property tax appeal services in Oconomowoc, Wisconsin. Our team analyzes your assessment, gathers evidence, files all paperwork, and represents you at hearings — all with no upfront cost. You only pay a percentage of your savings if we successfully lower your tax bill.