Wisconsin Car Bill of Sale: Form + Requirements

Wisconsin recommends a bill of sale for private vehicle transfers. The state doesn't publish a single mandatory form. Notarization is not required.

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Is a bill of sale required in Wisconsin?

Recommended but not strictly required.

Notarization

Not required.

State-specific form

Wisconsin doesn't publish a single mandatory bill of sale form. Generic templates with the required fields are acceptable.

The bill of sale should include:

Seller's full legal name, address
Buyer's full legal name, address
Vehicle year, make, model, body type, VIN
Odometer reading
Sale price
Date of sale
Both signatures

Sales tax implications

Wisconsin state sales tax: 5% + local. Major counties:

Milwaukee County: 5.5%
Dane County (Madison): 5.5%

Lower than most US metros.

The buyer pays at the WI DOT at title transfer.

State-specific seller disclosures

Odometer disclosure: federally required for vehicles under 20 years old
No statewide emissions testing: limited program in 7 SE Wisconsin counties (Milwaukee area)
Salvage title disclosure: required if branded

Where to file

The buyer files at any Wisconsin DOT office or DMV service center within 30 days of sale.

For a more complete national reference, see the national bill of sale guide and our Milwaukee guide.

Frequently asked questions

Do I need a bill of sale in WI?

Recommended but not strictly required.

Does WI require a notarized bill of sale?

No.

What's the sales tax on a private car sale in WI?

State 5% + local. Milwaukee County 5.5%; Dane County (Madison) 5.5%.

What form do I use?

No single mandatory form. Generic templates with the required fields are acceptable.

Where do I file the bill of sale in WI?

At any WI DOT office, with the signed title. Within 30 days of sale.

Does WI require emissions testing?

Yes in 7 SE Wisconsin counties (Milwaukee metro area).

What if I lost the title in WI?

Apply for a duplicate at the WI DOT.

Should I disclose flaws on the bill of sale?

The "as-is" disclosure covers most. Disclose salvage or rebuilt status and major defects.

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