CDL state guide
Missouri CDL Requirements — Complete Guide (2026)
Get your CDL in Missouri. Learn the knowledge test requirements, fees, minimum age, CLP process, and where to apply for your Missouri Commercial Driver's License. This guide is a planning page built from official Missouri Department of Revenue source links, with reminders to verify final fees and test availability before you apply.
Quick answer
Start with the CLP, medical certification, and the General Knowledge test
Most Missouri CDL applicants need a valid regular driver license, must be at least 18 for intrastate commercial driving or 21 for interstate operation, and must pass the required knowledge tests before the CDL skills test. The CLP must be held at least 14 days before skills testing.
At a glance
Missouri CDL at a glance
| Minimum age | 18 intrastate / 21 interstate |
|---|---|
| General Knowledge test | 50 questions, 80% to pass |
| CLP fee | Class A/B/C instruction permit: $7.50 |
| CDL fee | CDL: $22.50 for 3-year / $45 for 6-year, plus processing where applicable |
| CLP holding period | 14 days minimum before the CDL skills test |
| CDL valid for | 3 or 6 years, depending on issuance term |
| Issuing agency | Missouri Department of Revenue |
Classes
CDL classes available in Missouri
Missouri follows the federal CDL class structure: Class A for qualifying combination vehicles, Class B for many single heavy vehicles, and Class C for certain passenger or hazardous-material vehicles below Class A/B thresholds. The class you apply for should match the vehicle you will test in and the commercial work you plan to do.
Missouri CDL applicants should verify medical certification, endorsement testing, and how DOR handles CLP renewals or retests.
Process
How to get your CDL in Missouri
- Confirm eligibility with Missouri Department of Revenue and make sure your regular driver license is valid.
- Complete any required DOT medical certification and keep your medical status current.
- Study the official Missouri CDL manual before taking knowledge tests.
- Pass General Knowledge and any class or endorsement tests needed for your CLP.
- Hold the CLP for at least 14 days and practice with a qualified CDL holder when required.
- Complete ELDT when it applies, especially for first-time Class A/B, Hazmat, Passenger, or School Bus paths.
- Missouri applicants should confirm CDL skills-test locations and whether third-party testing applies.
Use Missouri DOR commercial licensing and office locator pages before testing or applying.
Knowledge tests
CDL knowledge tests in Missouri
The General Knowledge test is the common starting point. Additional tests depend on your class, vehicle, air-brake system, cargo, and endorsements. Test counts below are practical planning figures; verify the current testing screen and endorsement list with Missouri Department of Revenue.
| Test | Questions | Passing score | When it matters |
|---|---|---|---|
| General Knowledge | 50 questions | 80% | Required starting test for most CDL applicants. |
| Air Brakes | Usually 25 questions | 80% | Needed if the vehicle has air brakes and you do not want an air-brake restriction. |
| Combination Vehicles | Usually 20 questions | 80% | Common for Class A combination vehicle applicants. |
| Hazardous Materials | Usually 30 questions | 80% | Requires extra federal/TSA and ELDT steps when applicable. |
| Passenger | Usually 20 questions | 80% | Needed for passenger-carrying commercial vehicles. |
| School Bus | Usually 20 questions | 80% | Usually requires Passenger plus school-bus-specific testing. |
| Tank Vehicle | Usually 20 questions | 80% | Needed for qualifying tank vehicles or certain liquid/gas cargo. |
Endorsements
CDL endorsements in Missouri
Missouri CDL applicants can usually pursue the standard federal endorsements: H Hazardous Materials, N Tank Vehicle, P Passenger, S School Bus, T Double/Triple Trailers, and X Tanker plus Hazmat. Hazmat, Passenger, and School Bus paths can involve extra checks, ELDT, or skills-test requirements.
Fees
Missouri CDL fees
| CLP application fee | Class A/B/C instruction permit: $7.50 |
|---|---|
| CDL application/license fee | CDL: $22.50 for 3-year / $45 for 6-year, plus processing where applicable |
| Skills test fee | May be separate if a third-party skills tester is used; confirm with Missouri Department of Revenue or the approved tester. |
| Endorsement fees | Often listed separately by endorsement or transaction; verify before adding Hazmat, Passenger, School Bus, Tanker, or other endorsements. |
| Renewal fee | Renewal cost can differ from original issuance. Check your state fee schedule before renewal. |
Official resources
Official Missouri CDL resources
Study path
Next steps for Missouri CDL prep
FAQ
Missouri CDL questions
How old do I need to be to get a CDL in Missouri?
Plan for 18 for intrastate commercial driving and 21 for interstate driving, hazardous materials, and many cross-state jobs. Verify final restrictions with Missouri Department of Revenue.
How long do I have to hold a CLP in Missouri?
Federal CDL rules require at least 14 days before taking the CDL skills test. Missouri may add scheduling or documentation steps.
What score do I need on CDL knowledge tests?
Use 80% as the planning benchmark for CDL knowledge tests unless Missouri Department of Revenue states a different rule for a specific test.
Where should I verify Missouri CDL fees?
Use the official Missouri Department of Revenue CDL page, fee schedule, or office because CLP, CDL, endorsement, renewal, duplicate, and skills-test fees can be listed separately.
Other state CDL guides
Compare nearby state CDL rules
Commercial driver license fees, testing offices, and skills-test scheduling can differ across state lines. Use these related state pages when comparing CDL paths.
Source note: Last checked June 29, 2026 against the official Missouri Department of Revenue CDL page and linked manual/office resources. US Permit Prep is independent and not affiliated with any DMV, state agency, or FMCSA.
