Wisconsin sets no statutory cap on the dealer documentation fee, but requires it to be disclosed (Wis. Admin. Code Trans 139.05(8)(a) (effective 1 August 2002): a dealer may charge a service fee only after full disclosure, may not raise it after disclosure, must print the prescribed notice on the contract, and must itemise the services on request; the Department may audit the fee for reasonableness).
Doc-fee rule: Not state-capped
The rule
Standing
Not state-capped
Statute
Wis. Admin. Code Trans 139.05(8)(a) (effective 1 August 2002): a dealer may charge a service fee only after full disclosure, may not raise it after disclosure, must print the prescribed notice on the contract, and must itemise the services on request; the Department may audit the fee for reasonableness · statute text
Disclosure
The fee must be disclosed to the buyer.
Verification
Checked against the statute text; our last review was 2026-09-14. Statutes change — confirm with the state before you rely on it.
5.44% (state 5% + average local 0.44%)state rate verified against a primary source; local average approximation from an aggregator — verify with the state · source
Trade-in tax credit
yes — a trade-in reduces the taxable amountverify with the state
State table checked 2026-07-14
Wisconsin sets no statutory ceiling on the documentation fee. The amount is limited by negotiation, not by law.
Reading this page
Legal and expensive are two different questions.
The documentation fee is the dealership’s charge for preparing the paperwork. It sits next to the government fees on the buyer’s order and is easily mistaken for one. It is not: it is dealer revenue, not a tax. Where the state sets a cap, a fee above it is a question for the dealer and the statute. Where the state sets none, the fee can be entirely legal and still worth negotiating. This page answers only the first question; your report answers the second against your actual quote.
Where the rule is unverified
When a jurisdiction’s rule on file rests on a secondary source or an internal estimate, this page says so and points you at the state agency instead of asserting a figure. That is the same posture the report takes: a cap is never fabricated, and neither is its absence.
What Carlarity checks
Your quoted documentation fee against this rule — and, where a verified cap exists, whether the quote exceeds it.
Title, registration and sales tax on your deal, computed from the same state table shown here.
Every dealer add-on on the order, classified and benchmarked, with the government and lender lines kept out of the negotiable total by construction.
The out-the-door price, so the doc fee is judged as part of the whole and not as a line on its own.
Nearby states
Doc-fee rules stop at the state line, and a dealership an hour away may be operating under a different one. Wisconsin borders:
Figures come from Carlarity’s documentation-fee regulation table and state tax table; each shows the date we last reviewed it, and statutes change after we look. Nothing on this page is legal advice. Verify with the state agency before relying on a cap, and check the quoted fee against your own buyer’s order.
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