Updated · Property tax data: Census ACS 2024 5-year estimates · Transfer tax verified April 2026 · Methodology · Editorial policy
Waukesha County's 1.14% median tax-to-value ratio falls in the middle 50% of US counties, close to the national median of 0.81%. Within Wisconsin's 72 counties, it's the 14th lowest. On the county's median home value of $398,200, the typical homeowner pays $4,554 annually in property tax, $2,925 more than the national median of $1,629. At closing, Wisconsin's 0.30% combined real estate transfer tax adds roughly $1,195 on a median-priced home, typically paid by the seller. FEMA data shows 21.6% of the county's land area sits within a Special Flood Hazard Area, a high exposure level that may trigger mandatory flood insurance on mortgaged properties.
Enter any purchase price to see the full cost breakdown for Waukesha County.
The two rows above, added together: everything due at closing plus your first twelve months of ownership.
High flood risk. Flood insurance likely required by your lender. Verify the flood zone at msc.fema.gov.
All figures are estimates for planning purposes only. Mortgage payment assumes a 30-year fixed rate of 7.28%, the Freddie Mac PMMS average for the week ending October 1, 2026. Your lender will confirm the actual rate. Closing costs vary by lender and transaction. Consult a licensed real estate attorney and lender before making any financial decisions.
Ways buyers in Waukesha County may reduce their annual property tax. These programs apply statewide; verify county specifics with your local assessor.
Direct property tax credit on a primary residence, typically $150-$350/year, funded by Wisconsin Lottery and gaming proceeds. Must be a Wisconsin resident and owner-occupy by January 1.
View official source →Two automatic credits applied to all property tax bills: School Levy Credit reduces the school portion; First Dollar Credit applies a flat credit on improved residential property.
View official source →Veterans with 100% service-connected disability or individual unemployability receive a refundable credit equal to property tax paid on the primary residence. Surviving spouses also qualify.
View official source →Income-based refundable credit up to $1,168 for homeowners and renters with household income under $24,680. Claimed on the Wisconsin income tax return.
View official source →Last verified April 2026. Exemption amounts and eligibility change frequently. Always confirm with your county assessor before claiming.
Answers to common questions about buying a home in Waukesha County.
There is no single property tax rate for Waukesha County. The 1.14% figure commonly quoted is a county-wide median: the median annual property tax paid ($4,554) divided by the median home value ($398,200), from 2024 US Census ACS 5-year estimates. It is a statistic describing the county, not a rate levied on any particular property. Your own bill depends on your assessed value, the millage set by your overlapping taxing districts, any homestead or senior exemptions you qualify for, and special assessments. One thing to watch: the median reflects taxes actually paid by current owners, many of whom hold homestead exemptions and assessment caps, so a new buyer paying today's market price often pays more than 1.14% of the purchase price.
Wisconsin's combined real estate transfer tax is approximately 0.30% of the purchase price. On the median Waukesha County home value of $398,200, this adds roughly $1,195 at closing. $0.30/$100 (0.3%) Real Estate Transfer Fee per Wis. Stat. 77.22, seller-paid. 80/20 state/county revenue split but uniform statewide rate. Wisconsin prohibits local governments from imposing additional transfer fees.
Partially. 21.6% of Waukesha County's land area lies within a FEMA Special Flood Hazard Area. Whether flood insurance is required depends on your specific property. Check msc.fema.gov before making an offer.
On Waukesha County's median home value of $398,200 with 20% down, buyer closing costs work out to roughly $5,205–$9,128, or 1.3–2.3% of the purchase price. That covers title insurance $800–$2,000; loan origination fee $1,593–$3,186; home appraisal $400–$700; home inspection $350–$600; recording fees $100–$300; prepaid mortgage interest $953; homeowners insurance (2 months) $250; property tax escrow (2-3 months) $759–$1,139. Transfer tax is listed separately. These are national ranges for each line item rather than Waukesha County quotes, so treat them as a planning range and use the calculator above for your own purchase price.
Every county-specific figure on this page links to the exact public dataset it comes from. Verify the numbers yourself against the original source.
Source for the $4,554/yr median taxes paid (ACS 2024 5-year estimates, variable B25103_001E).
Source for the $398,200 median home value (variable B25077_001E). The 1.14% effective rate is median taxes paid divided by median home value.
Source for the transfer tax used in the calculator (buyer 0.00%, seller 0.30%). Verified April 2026.
Source for the county's flood hazard exposure (coastal and inland flood exposure area as a share of county area).
The national dataset behind the county report, including its technical documentation and release notes.
Look up a specific property's flood zone and insurance rate map before making an offer on a home in Waukesha County.
Closing cost line items are national ranges, not county data. The methodology lists each range's source and the calculator's assumptions (mortgage rate, insurance, PMI).
Wisconsin property tax exemptions: official sources
Verified April 2026.
What every buyer should read before making an offer.
An HOA capped rentals at 10 of 50 homes and grandfathered the existing landlords. How to find rental restrictions before closing, and what they cost you.
Read the guide →A buyer closed on a house and only then found out about ongoing HOA lawsuits. Six checks you can run yourself before your contingencies expire.
Read the guide →HOA special assessment not on the disclosure? One buyer got a $15,000 bill the day after closing. How to catch it before, and what to do after.
Read the guide →