CDL licenses are valid for four or eight years, depending on whether you drive commercial vehicles across state lines

A Commercial Driver's License (CDL) is valid for either four or eight years from the date of issue. The length depends on whether you drive only within your state or cross state lines. If you drive interstate — meaning you haul cargo or passengers across state borders — your CDL must be renewed every four years. If you drive only within your state, you can renew every eight years. Your license will show an expiration date printed on the front.

The four-year requirement for interstate drivers comes from federal law. The Federal Motor Carrier Safety Administration (FMCSA) sets this standard for anyone operating a commercial vehicle in interstate commerce. States cannot extend this period, even if a driver has a clean record. If you are unsure whether your work counts as interstate, check with your employer or your state's Department of Motor Vehicles — the distinction affects your renewal timeline.

Your renewal date is locked in when you first receive your CDL. You do not get to choose between four and eight years at renewal time; the state assigns the length based on your driving classification at that moment. If you switch from intrastate to interstate driving, your next renewal will follow the four-year rule.

Key Takeaways

  • Interstate CDL holders must renew every four years; intrastate drivers can renew every eight years.
  • Your expiration date is printed on your license card and is set when you first receive it.
  • You should begin the renewal process 30 to 60 days before expiration to avoid driving with an expired license.
  • Renewing before expiration keeps your license valid during processing; renewing after expiration may result in a lapsed status that requires retesting.
  • Medical certification must be renewed every two years regardless of your CDL renewal cycle, and an expired medical card can suspend your driving privileges.

When to start the renewal process

Start your renewal 30 to 60 days before your expiration date. Most states process renewals within two to four weeks, but delays happen — especially during busy seasons or if documents are missing. Starting early gives you a buffer so your license does not lapse while you are waiting.

If your license expires while you are in the middle of renewal, the rules vary by state. Some states allow you to continue driving on a receipt or temporary permit while your new license is being processed. Others do not. Contact your state's Department of Motor Vehicles to learn the specific rule where you hold your license. Driving with a fully expired CDL — without any temporary authorization — is illegal and can result in fines and out-of-service orders.

Medical certification renewal is separate and happens every two years

Your medical certification — the document proving you passed a Department of Transportation (DOT) physical — must be renewed every two years. This is separate from your CDL renewal cycle. If your medical card expires, your CDL is automatically suspended, even if your license itself does not expire for years.

You renew your medical certification by visiting a certified medical examiner and passing a DOT physical. The examiner checks your vision, hearing, blood pressure, and other health factors. Once you pass, the examiner issues a new medical certificate valid for two years. You must carry this certificate with you while driving, and you must submit it to your state's DMV to keep your CDL active.

Many drivers miss their medical renewal important date because they think their CDL renewal date is the only one that matters. It is not. Mark both dates on your calendar — your CDL expiration and your medical certificate expiration — and renew the medical certificate first if they fall close together.

What happens if your CDL expires

Driving with an expired CDL is a violation. You can be cited, fined, and placed out of service — meaning you cannot operate a commercial vehicle until you renew. Your employer may also face penalties if they knowingly allow you to drive with an expired license.

If you let your license expire and then renew it late, some states require you to retake the written test or skills test. Others allow a grace period of 30 to 90 days after expiration before testing is required. Check your state's rules before your license expires so you know what to expect if renewal is delayed.

Renewing your CDL in your home state

To renew, visit your state's Department of Motor Vehicles in person. Bring your current CDL, proof of identity, proof of residency, and your medical certificate. Some states allow you to renew by mail if you meet certain conditions — usually if you have no violations and your address has not changed — but most require an in-person visit.

The renewal fee varies by state, typically ranging from $50 to $150. Some states charge more if you are renewing after expiration rather than before. Payment methods and processing times also differ by state. Check your state's DMV website for the exact requirements and fees before you go.

Renewing a CDL in a different state

If you move to a new state, you must obtain a CDL from that state within a set period — usually 30 to 60 days after establishing residency. You cannot straightforward renew your old state's license while living elsewhere. You will need to pass the written test and skills test again in your new state, even if you have held a valid CDL for years.

Your new state's CDL will have a new expiration date based on when you receive it. If you held an interstate CDL in your previous state, your new state's CDL will also be interstate and will expire in four years. The renewal cycle does not carry over from your old license; it restarts with your new one.

Keeping track of multiple renewal dates

CDL holders often juggle three dates: the CDL expiration, the medical certificate expiration, and sometimes a hazmat endorsement expiration if they carry hazardous materials. Missing any one of them can suspend your ability to work.

Set phone reminders for 60 days before each expiration date. Write the dates in a calendar you check regularly. Some drivers keep a small card in their wallet listing all three dates. The extra minute spent organizing now prevents the scramble and potential lost income that comes from an expired license.

Frequently Asked Questions

Can I renew my CDL before the expiration date?

Yes. Most states allow you to renew up to six months before expiration. Renewing early is a smart move because it ensures your new license arrives before the old one expires, keeping you legal to drive without interruption.

What if I let my CDL expire by accident?

You cannot legally drive a commercial vehicle with an expired CDL. Contact your state's DMV when ready to renew. Depending on your state, you may need to retake tests if you are renewing significantly after expiration. The sooner you renew, the fewer complications you will face.

Does my medical certificate expiration affect my CDL?

Yes. If your medical certificate expires, your CDL is automatically suspended even if the license itself is still valid. You must renew your medical certificate every two years to keep driving. This is a separate process from CDL renewal and happens on its own schedule.

If I move states, do I keep my four or eight year renewal cycle?

No. When you move and obtain a new CDL in your new state, your renewal cycle restarts. If you were on a four-year cycle (interstate), your new state's CDL will also be four years. If you were on an eight-year cycle (intrastate) and move to a state with different rules, your new cycle follows your new state's law.

Can I renew my CDL online?

Most states require an in-person visit to renew a CDL, though a few allow mail-in renewal under specific conditions — usually if you have no violations and your address has not changed. Check your state's DMV website to see if online or mail renewal is an option for you.