A CDL DUI lawyer usually costs a few thousand dollars for a case that ends in a plea, and considerably more if the case goes to trial. Published fee examples for DUI defense run from about $1,000 to well over $10,000, and the price depends on your state, your county, the attorney, and how hard the case is to defend. Because a conviction costs a commercial driver at least a year of driving work, the real comparison is the fee against a year of lost pay.
Key takeaways
- Most DUI lawyers charge a flat fee, often split into stages (plea, motions, trial). Some bill hourly.
- Published examples range from roughly $1,000 to more than $10,000. Trial can add thousands on top of the base fee.
- The administrative license hearing, expert witnesses, test retesting and investigators may cost extra.
- CDL cases tend to cost more because the stakes are higher and federal rules limit the usual plea options.
- A first DUI conviction means a 1 year CDL disqualification. At the BLS median wage for heavy truck drivers, that is more than $58,000 of income at risk.
How CDL DUI lawyers charge
There are two common billing models, and many attorneys combine them.
Flat fee
A flat fee is one set price for a defined scope of work. Many DUI attorneys quote a flat fee because clients like knowing the number up front. The catch is the word “scope.” A flat fee may cover the criminal case through a plea but not a trial, not the administrative license hearing, and not appeals. Some lawyers quote a tiered flat fee: one price if the case resolves before trial and a second payment if it goes to trial.
As one example, a Price Benowitz LLP page on South Carolina DUI cases says flat fees there typically fall between $2,000 and $5,000. A Los Angeles County DUI firm, Greg Hill & Associates, gives about $3,000 as a typical attorney fee for a first time misdemeanor DUI resolved by plea, while noting the number can range quite a bit.
Hourly billing
Hourly billing means you pay for the time the lawyer actually spends, usually against an upfront retainer. It is less common for DUI cases, but it shows up in complex cases, appeals, and some larger firms. The same Price Benowitz page puts hourly DUI rates in South Carolina at roughly $200 to $500 per hour. Hourly billing can be cheaper for a quick resolution and much more expensive if the case drags on.
What the overall numbers look like
These figures come from different states and years, so treat them as a rough picture, not a quote.
| Source | What it reports |
|---|---|
| Nolo reader survey (first offense DUI) | Average of $1,900 in attorney fees and expenses |
| Price Benowitz LLP (South Carolina) | $1,000 to over $10,000 overall; flat fees often $2,000 to $5,000; hourly $200 to $500 |
| Greg Hill & Associates (Los Angeles County) | About $3,000 for a plea; trial may add $3,500 to $15,000 |
Fees vary widely. Survey averages also mix simple and complex cases, and none of these figures are specific to commercial drivers, whose cases tend to sit at the higher end for the reasons below.
What drives the price up or down
Plea or trial
The biggest single factor is whether the case goes to trial. Trial means jury selection, witness preparation, cross examination of the officer, and often expert testimony. That is why many lawyers price trial separately.
The administrative license hearing
Most states run a separate administrative process at the DMV or a state hearing office, apart from the criminal case. For a CDL holder this hearing matters a lot, because an administrative finding of refusal or a 0.04 test result can lead to disqualification on its own. Ask whether the fee includes it. Our guide to the CDL DUI administrative hearing explains how that track works.
Your state and county
Legal fees track local costs, court procedures, and how aggressively a given prosecutor’s office handles DUI cases. A firm in a large metro area often charges more than a solo attorney in a rural county. The Greg Hill page notes that the arrest location and even the assigned judge can move costs by hundreds or thousands of dollars.
Hazmat, prior offenses and aggravating facts
A hazmat load turns a 1 year disqualification into 3 years. A prior DUI or refusal means a second major offense, which carries a lifetime disqualification under 49 CFR 383.51. A crash, injuries, a high BAC, or a refusal all add work. Higher stakes and more work mean a higher fee. See CDL DUI penalties for the full breakdown.
The type of test and the evidence
Blood test cases can involve lab records, chain of custody issues, and retesting. Breath test cases can involve the machine’s maintenance and calibration records. Dash cam and body cam footage takes time to review. Every motion to suppress evidence is billable work, whether it is built into a flat fee or not.
Hidden and extra costs to budget for
- Expert witnesses. Toxicologists and breath testing experts are often billed separately from the attorney fee. Ask whether the lawyer expects to need one.
- Retesting and investigators. The Greg Hill page lists blood sample retesting at about $150 to $350 and a private investigator at roughly $1,000.
- Administrative hearing fees. Some states charge to request the hearing. Florida’s review application lists a $25 filing fee and Georgia’s hearing request form lists a $150 fee.
- Fines and court costs. Nolo’s survey found average court fines of about $1,100 on a first offense DUI.
- SR-22 and insurance. Many states require proof of insurance filing (often called an SR-22) to reinstate your license after a DUI. Nolo’s readers reported insurance increases averaging about $800 per year, and commercial insurability can be a much bigger problem for a trucking career than the personal premium.
- Classes, evaluations and interlock devices. State ordered alcohol education, ignition interlock fees, and reinstatement fees add up. If a DOT drug or alcohol violation is also involved, you will pay for the SAP process covered in our return to duty guide.
Why CDL DUI cases cost more than a regular DUI
A regular driver with a first DUI may be able to accept a diversion program or a deferred judgment and keep driving on a restricted license. A CDL holder usually cannot. Federal law under 49 CFR 384.226 forbids states from masking, deferring, or diverting a CDL holder’s traffic conviction, in any vehicle. Our article on the CDL masking law covers this in detail.
That changes the math for the defense. The easy exits are closed, a plea to DUI means automatic disqualification, and there is no hardship license for driving a commercial vehicle during the disqualification. So more CDL cases are fought on the facts: suppressing the stop, attacking the test, or going to trial. That takes more hours and more skill, and lawyers who regularly handle CDL cases price accordingly. The rules also apply in your personal car, as explained in CDL DUI in a personal vehicle.
Comparing the fee to a year of lost income
According to the U.S. Bureau of Labor Statistics, the median annual wage for heavy and tractor trailer truck drivers was $58,640 in May 2025. A first DUI conviction or refusal brings a minimum 1 year disqualification, so a typical driver puts more than $58,000 of wages at risk, before counting lost seniority, the job search afterward, and higher insurance.
That does not mean the most expensive lawyer is always the right choice, or that a lawyer can win every case. Some cases have strong evidence and the best realistic outcome is limiting the damage. But a fee of a few thousand dollars looks different next to a year of income, and many drivers find it worth paying for at least a consultation. Our guide on whether you need a lawyer for a CDL DUI walks through that decision. To see how long your disqualification could be, use our free CDL disqualification checker.
Questions to ask about fees
- Is this a flat fee or hourly? If flat, exactly what does it cover?
- Does the fee include the administrative license hearing, and do you handle it yourself?
- What happens to the fee if the case goes to trial? Is trial a separate charge?
- Are expert witnesses, retesting, investigators, and records requests included or extra?
- Is any part of the fee refundable if the case ends early or is dismissed?
- How many CDL DUI cases have you handled, and how do you approach the masking rule in this county?
- Will you be the one appearing in court and at the hearing, or another attorney in the firm?
- Do you offer a payment plan, and is the agreement in writing?
Get the answers in a written fee agreement. If you have a prepaid legal plan through a trucking association or employer, check what it covers before you sign with anyone.
Know the rules before you need a lawyer
Reference
FMCSR pocketbook
A cab friendly copy of the federal rules, including the disqualification tables in Part 383.
Prevention
Fuel cell breathalyzer
A personal tester to check yourself well before a shift, since 0.04 comes sooner than many drivers expect.
As an Amazon Associate we earn from qualifying purchases.
Frequently asked questions
How much does a CDL DUI lawyer cost?
Published DUI fee examples range from about $1,000 to more than $10,000, with many plea cases quoted in the $2,000 to $5,000 range and trials adding thousands more. CDL cases often cost more because federal rules block diversion and deferral. Fees vary widely by state, county, and attorney.
Is a flat fee better than hourly for a CDL DUI?
A flat fee gives you price certainty, but only for the work it covers. Read the scope carefully: it may exclude trial, the administrative license hearing, experts, or appeals. Hourly billing can cost less if the case ends quickly and more if it does not.
Does the DUI lawyer fee include the DMV hearing?
Not always. The administrative license hearing is a separate proceeding, and some attorneys charge for it separately. For a CDL holder it is important, because an administrative finding of refusal or a 0.04 result can lead to disqualification on its own.
Why is a CDL DUI more expensive to defend than a regular DUI?
Federal law forbids states from masking, deferring, or diverting a CDL holder’s conviction, and there is no hardship license for driving a commercial vehicle during disqualification. With fewer easy exits, more cases are fought on the facts, which takes more time and expertise.
Is hiring a lawyer worth it for a CDL DUI?
Compare the fee to the cost of a conviction. The BLS median wage for heavy and tractor trailer truck drivers was $58,640 in May 2025, and a first conviction means at least a 1 year disqualification. A lawyer cannot guarantee a result, but a consultation with a licensed attorney in your state is usually worth it.
What other costs come with a CDL DUI besides the lawyer?
Expect possible fines and court costs, administrative hearing fees, expert or retesting costs, license reinstatement fees, SR-22 insurance filings, alcohol education classes, and possibly ignition interlock fees, on top of lost income during disqualification.
Sources
- U.S. Bureau of Labor Statistics: Heavy and tractor trailer truck drivers, Occupational Outlook Handbook
- 49 CFR 383.51: Disqualification of drivers (eCFR)
- 49 CFR 384.226: Prohibition on masking convictions (eCFR)
- Nolo: How much does a first offense DUI cost? (reader survey)
- Price Benowitz LLP: How much does a DUI lawyer cost?
- Greg Hill & Associates: How much does a DUI really cost?
- Florida HSMV: Application for formal or informal review (form 78065)
- Georgia DDS: ALS hearing request form (DDS 1206)
CommercialDUI.com is an independent information resource for commercial drivers. We are not a law firm and nothing on this site is legal advice. Laws change and vary by state, so confirm details with your state licensing agency or a licensed attorney.