How much does a truck accident lawyer cost?
Short answer
Truck and 18-wheeler accident lawyers almost always work on contingency, commonly quoted at one-third and often stepping up if suit is filed; Michigan caps injury fees at one-third and Florida and Connecticut use sliding scales. Cases cost more to build because firms advance money for ELD and engine data, experts and depositions. Federal rules require at least $750,000 in liability coverage for for-hire interstate freight carriers (more for hazardous cargo) and only 6 months of hours-of-service record retention.
How truck accident lawyers charge
Truck and 18-wheeler crash cases are almost always taken on a contingency fee: the firm is paid a percentage of the recovery and nothing if there is none. The agreement must be written and signed, state the percentage for settlement, trial and appeal, list the expenses that will be deducted, and say whether they come out before or after the fee is calculated.[1] One-third is the most commonly quoted starting percentage and is the maximum for injury cases in Michigan;[2] Florida presumes fees above 33⅓% of the first $1 million excessive before an answer is filed and above 40% after,[3] and Connecticut uses a sliding scale starting at 33⅓% of the first $300,000.[4]
The percentage is usually the same as for a car crash. The difference is the investment: commercial-truck cases involve a motor carrier, its insurer and often a defense team that starts working the day of the crash, so the plaintiff's firm may advance far more in experts and data recovery before any settlement talk.
Federal insurance minimums for trucks
Interstate motor carriers must carry at least the public liability amounts set by the Federal Motor Carrier Safety Administration. These minimums matter for cost because they set a floor on the coverage likely to be available, which in turn affects how much a firm is willing to invest in a case.
| Type of carriage (vehicles 10,001+ lbs GVWR unless noted) | Minimum |
|---|---|
| For-hire, interstate or foreign commerce, nonhazardous property | $750,000[5] |
| For-hire and private, oil listed in 49 CFR 172.101 and hazardous materials not in the $5 million categories | $1,000,000[5] |
| For-hire and private, certain hazardous substances in bulk and specified explosives, poison-inhalation and radioactive materials | $5,000,000[5] |
| For-hire and private, vehicles under 10,001 lbs carrying specified high-hazard materials | $5,000,000[5] |
The schedule's amounts carry a January 1, 1985 date in the regulation.[5] They are minimums: many carriers buy more, and intrastate carriers are generally covered by state rules instead. Private (non-for-hire) carriers of ordinary freight are not in the $750,000 row,[5] so coverage there depends on the policy and state law.
Evidence that must be preserved early
The single biggest cost-and-value issue in a truck case is evidence that the carrier controls and may lawfully discard after a short period. A lawyer will usually send a preservation (spoliation) letter quickly, asking the carrier to keep:
- Hours-of-service records and ELD data. Carriers must keep drivers' records of duty status and supporting documents for at least 6 months from receipt.[6] These records show whether the driver stayed within the federal limits for property carriers: no driving beyond the 14th hour after coming on duty, no more than 11 hours of driving in that window, a 30-minute break after 8 hours of driving, and the 60-hour/7-day or 70-hour/8-day limit.[7]
- Engine control module and telematics data: speed, braking and throttle before impact.
- Dash-camera and driver-facing video, which some systems overwrite automatically.
- Driver qualification file, drug and alcohol testing, and maintenance and inspection records.
- Dispatch, load and bill-of-lading records, which can show who loaded the cargo and the delivery schedule the driver was under.
Downloading and interpreting this data takes specialists, and those invoices are case costs. Ask the firm in the first meeting whether it has already sent a preservation letter and who will pay for data downloads.
What pushes the cost up
- Several defendants: driver, motor carrier, broker, shipper, trailer owner or a maintenance company, each with its own insurer and lawyer.
- Accident reconstruction and trucking-safety experts to tie the crash to hours-of-service, maintenance or training failures.
- Medical and economic experts where injuries are permanent or the claim involves a death.
- Litigation: once suit is filed, many agreements step up the percentage, and depositions of company personnel add transcript and travel costs.
We do not publish typical expert invoices because we could not find a reliable source for them; ask each firm for its own expected cost range and a consent threshold before large expenses.
Worked example: same settlement, two agreements
Illustrative example only (not a prediction of any case's value). A case resolves for $400,000 after suit was filed. Costs advanced: $45,000 (reconstruction, ECM download, depositions, medical experts).
Agreement 1: 40% after filing, taken from the gross. Fee $400,000 × 0.40 = $160,000. Client before liens: $400,000 − $160,000 − $45,000 = $195,000.
Agreement 2: 33⅓% after filing, taken after costs. Fee ($400,000 − $45,000) × 1/3 ≈ $118,333. Client before liens: $400,000 − $118,333 − $45,000 ≈ $236,667.
Difference: about $41,667, from two lines of the fee agreement. Medical liens and reimbursement claims are then paid from the client's share; see the lien example on the personal injury lawyer cost page.
Florida, for reference, would presume a fee above 40% of the first $1 million excessive once an answer is filed,[3] and Michigan would cap the fee at one-third in any injury case.[2]
Questions to ask a truck accident firm
- Has a preservation letter gone to the carrier, and when?
- What percentage applies before suit, after filing and at trial, and is it calculated on the gross or net of costs?[1]
- Do I owe advanced costs if we lose?[1]
- Will my case be referred to or co-counseled with another firm, and how is the fee split?
- Will you ask me before spending above a set amount on experts?
- What is my filing deadline? General injury deadlines are listed on each state page.
Frequently asked questions
Why do truck accident cases cost more than car accident cases?
The percentage is often the same, but the firm usually advances more money: ELD and engine data downloads, reconstruction and trucking-safety experts, and depositions of company staff, with several defendants and insurers involved. Those costs are repaid from the recovery.
How much insurance does a semi-truck have to carry?
Federal rules set minimum public liability of $750,000 for for-hire interstate carriers of nonhazardous freight, $1 million for oil and some hazardous materials, and $5 million for certain high-hazard cargo (49 CFR 387.9). Many carriers carry more; intrastate carriers follow state rules.
How long does a trucking company keep logbook or ELD records?
Federal rules require carriers to keep records of duty status and supporting documents for at least 6 months. That is why lawyers send preservation letters quickly after a crash.
Is an 18-wheeler lawyer different from a truck accident lawyer?
No. The terms describe the same kind of case, and the fees, insurance rules and evidence issues are the same.
Sources
- ABA Model Rule 1.5: Fees — American Bar Association. Contingent fee agreements must be written and say whether expenses come out before or after the fee; Rule 1.5(d) limits (checked October 11, 2026)
- Ethics opinion RI-122 (quoting MCR 8.121 contingent fee limit) — State Bar of Michigan. Michigan one-third maximum contingent fee in personal injury and wrongful death claims (checked October 11, 2026)
- Rules Regulating The Florida Bar, Chapter 4 (Rule 4-1.5(f)(4)(B)) — The Florida Bar. Florida schedule of contingent fees presumed excessive in personal injury cases (checked October 11, 2026)
- Conn. Gen. Stat. 52-251c — FindLaw (statute text). Connecticut sliding-scale cap on contingency fees in personal injury and wrongful death claims (checked October 11, 2026)
- 49 CFR 387.9: Financial responsibility, minimum levels — eCFR (National Archives). $750,000 / $1,000,000 / $5,000,000 minimum public liability levels for motor carriers (checked October 11, 2026)
- 49 CFR 395.8: Driver's record of duty status — eCFR (National Archives). Carriers must keep records of duty status and supporting documents for at least 6 months (checked October 11, 2026)
- 49 CFR 395.3: Maximum driving time for property-carrying vehicles — Legal Information Institute, Cornell Law School. 11-hour driving, 14-hour window, 30-minute break and 60/70-hour limits (checked October 11, 2026)