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2026-07-03T23:57:55.788Z
2026-07-03T23:57:55.788Z
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Estimate Overage: State Rules One-Pager
Can a mechanic charge more than the estimate? Verified state caps & authorization rules
Free resource by
garageauto.app
Shop management from $39/mo
State Rules at a Glance
State
Rule for exceeding a written estimate
Statute / authority
California
Consent required for ANY amount over the estimate — no tolerance. Oral OK must be logged (date, time, name).
Bus. & Prof. Code §9884.9 (BAR)
Connecticut
No charge above the estimate without your oral or written consent, recorded on the invoice.
Conn. Gen. Stat. §14-65f
Florida
Cap: estimate + greater of $10 or 10%, never more than $50 over, without new authorization. Written estimate required over $150.
Fla. Stat. §§559.905, 559.909
Illinois
Final bill may not exceed the written estimate by more than 10% without your consent.
815 ILCS 306 (Automotive Repair Act)
Maryland
No charge more than 10% above the written estimate without consent; unauthorized repairs can't be billed.
Md. Code, Com. Law §14-1008
Massachusetts
Shop must notify you and get authorization if the price will exceed the authorized amount by more than $10.
940 CMR 5.05(7)
Michigan
Consent required; narrow exception up to the LESSER of 10% or $50 over the estimate.
MCL 257.1332
Minnesota
Final price may not exceed the written estimate by more than 10% without prior authorization. Ask for it in writing — oral estimates aren't covered.
Minn. Stat. §325F.62
New Jersey
No work beyond the estimate without authorization; oral OKs must be noted with date, time, and name. No fixed % tolerance.
N.J.A.C. 13:45A-26C.2
New York
Final bill may not exceed the written estimate without your consent. Complaints go to the NY DMV (90 days / 3,000 miles).
Veh. & Traf. Law §398-d (Repair Shop Act)
Oregon
No charge for work or parts in excess of the estimate without consent; extra safeguards when the estimate exceeds $200.
ORS 646A.480–.486
Texas
No repair-specific statutory cap — Deceptive Trade Practices Act applies. AG advises written estimates and written authorization.
Tex. Bus. & Com. Code ch. 17 (DTPA)
Virginia
Charge may not exceed the written estimate by more than 10% without authorization (20% for vehicles 25 or more model years old); shops must post a sign saying so.
Va. Code §59.1-207.3
Washington
Final bill capped at 110% of the written estimate unless the shop gets your authorization first (the classic "10% rule").
RCW 46.71.025, .035
Wisconsin
Shop must contact you with a revised estimate and get authorization BEFORE exceeding; can't force payment above what you authorized.
Wis. Admin. Code ATCP 132
All other states
No specific statutory cap verified — general consumer-protection (UDAP) and authorization rules apply. Check your state AG or consumer-affairs office.
State UDAP laws
Authorization Checklist
For Customers
Ask for a written estimate before any work begins — your right in most states.
Tell the shop to call you before exceeding the estimate; note the threshold in your state above.
Approve extra work in writing (text or email) whenever possible — keep the message.
At pickup, get the itemized final invoice and compare it line by line to the estimate.
If overcharged: raise it with the owner → file with your state AG / consumer affairs → small claims court.
For Shops
Written, signed estimate for every job — parts, labor, fees — before any wrench turns.
Stop work the moment scope changes; contact the customer with a revised figure first.
Log every re-authorization on the repair order: date, time, name, amount approved.
Final invoice mirrors the estimate line for line, with approved overages shown separately.
Keep estimates, ROs, and invoices with the vehicle history in case of a dispute.
Last reviewed July 2026.
Laws change and this one-pager is a summary, not legal advice. Thresholds may depend on repair cost, whether the estimate was written, and waivers. Verify the current rule with your state attorney general or consumer-affairs agency before relying on it.
Free one-pager by
garageauto.app
— estimates, repair orders, and invoices for auto repair shops, starting at $39/mo.
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