The tanker endorsement costs vary by state, but most charge between $10 and $100 for the endorsement test itself

The tanker endorsement (also called the Tank endorsement or T endorsement) is an add-on to your CDL that lets you haul liquid cargo in bulk tanks. The fee you pay depends entirely on which state issues your CDL. Some states bundle the endorsement test into your regular CDL renewal fee; others charge a separate test fee. A few states charge nothing at all for the endorsement itself, though you may still pay for the written test or skills test if your state requires one.

The endorsement test is almost always written only — you do not take a separate road test for it. You answer questions about tank vehicle safety, weight distribution, and emergency procedures. The test itself costs less than most CDL endorsements, but the real expense comes if you need to take a training course first, which can run $200 to $500 depending on the school and your state.

Key Takeaways

  • Most states charge $10 to $100 to add the tanker endorsement to your CDL, though some charge nothing for the endorsement test itself.
  • The tanker endorsement requires only a written test, not a road test, and covers safe handling of liquid cargo in bulk tanks.
  • Some states require a training course before you can take the endorsement test, which can cost $200 to $500 and is separate from the endorsement fee.
  • Your state's DMV or equivalent agency sets the endorsement fee and can tell you the exact cost and whether training is required in your state.

How state fees break down

Each state's DMV or transportation department sets its own endorsement fee. States that charge a flat fee typically range from $10 to $50 for the tanker endorsement test. States that charge by endorsement type or bundle fees into a larger CDL package may charge up to $100. A handful of states — including some that charge for other endorsements — do not charge a separate fee for the tanker endorsement itself, though you may still pay for the written test as part of your CDL testing costs.

The fee covers the cost of administering the written test and updating your CDL record. It does not cover any training you may need to take beforehand. If your state requires a training course (some do, some do not), that is a separate cost you pay to a training provider, not to the DMV.

Training costs, if required

Not every state requires formal training before you take the tanker endorsement test, but many do. If your state requires it, you will need to complete a course at a truck driving school or training center. These courses typically last one to three days and cover tank vehicle operations, cargo handling, emergency procedures, and weight and balance. Costs range from $200 to $500 depending on the school, location, and whether the course is in-person or online.

Some employers offer tanker training as part of hiring, which means you would not pay out of pocket. If you are paying yourself, contact your state's DMV first to confirm whether training is required — if it is not, you can skip this cost entirely and go straight to the written test.

Where to find your state's exact fee

Your state's DMV website lists the endorsement fee and any training requirements. Search for "[your state] tanker endorsement fee" or "[your state] CDL endorsements" and look for the official DMV or transportation department page. The fee information is usually in a table that lists all CDL endorsements and their costs.

If you cannot find it online, call your state's DMV directly. Have your current CDL number or driver's license number ready, and ask specifically whether your state requires training before the test and what the total cost will be (endorsement fee plus any required training). Some states also allow you to take the test at a third-party testing facility, which may charge a small additional fee.

What happens after you pay

Once you pass the written test, the endorsement is added to your CDL within a few business days to a few weeks, depending on your state. You will receive an updated CDL card in the mail with the T endorsement listed. You do not need to renew your entire CDL — the endorsement is straightforward added to your existing license.

If you already have other endorsements (such as hazmat or passenger), the tanker endorsement stacks on top of them. Your CDL card will show all your endorsements, and you can haul tanker loads as soon as the updated card arrives.

Renewing the tanker endorsement

When you renew your CDL, you will need to renew the tanker endorsement as well. Most states require you to retake the tanker written test at renewal time. The renewal fee is usually the same as the original endorsement fee, though some states charge a slightly different amount for renewals. Your state's DMV will tell you whether you need to retake training before the renewal test — many states do not require it for renewals if you have held the endorsement continuously.

Endorsement renewals are typically due at the same time as your CDL renewal, which happens every four to eight years depending on your state and age.

Frequently Asked Questions

Can I take the tanker endorsement test without training?

It depends on your state. Some states allow you to take the test without formal training; others require you to complete a training course first. Check your state's DMV website or call them directly to find out whether training is mandatory where you live.

Do I have to renew the tanker endorsement every time I renew my CDL?

Yes, in most states. When your CDL comes up for renewal, you will need to renew the tanker endorsement as well, which usually means retaking the written test. Some states waive the training requirement for renewals if you have held the endorsement continuously.

What if I fail the tanker endorsement test?

You can retake the test. Most states allow you to retake it the same day or within a few days. You will likely have to pay the test fee again. Some states allow unlimited retakes; others limit the number of attempts per day or per month. Ask your DMV about their retake policy.

Is the tanker endorsement fee the same in every state?

No. Fees range from $0 to $100 depending on the state. Some states charge nothing for the endorsement itself, while others charge $50 to $100. Always check your specific state's DMV for the exact fee.

Can my employer pay for the tanker endorsement?

Many employers do pay for tanker training and the endorsement fee as part of hiring or job training. Ask your employer whether they cover these costs. If they do, you will not pay out of pocket, though you will still need to pass the written test yourself.