Tanker Endorsement vs Hazmat Endorsement

If you’re deciding between a tanker endorsement (N) and a hazmat endorsement (H), the short answer is: they cover different risks and lead to different jobs. A tanker endorsement lets you haul liquids in bulk, while a hazmat endorsement lets you carry hazardous materials. Many drivers get both, but each has its own requirements, costs, and career implications. Here’s what you need to know to choose wisely.

What Each Endorsement Covers

Tanker Endorsement (N)

This endorsement is required to operate a commercial vehicle that transports liquids or gases in bulk, such as tanker trucks carrying fuel, milk, chemicals, or water. The key skill is managing liquid surge, which affects braking and handling. The test focuses on safe driving techniques for tankers, including how to accelerate, brake, and turn with a partially filled tank.

Hazmat Endorsement (H)

This endorsement is required to transport hazardous materials as defined by the Department of Transportation (DOT). This includes explosives, flammable liquids, corrosive substances, and other dangerous goods. The endorsement requires a background check through the Transportation Security Administration (TSA) and a written test on hazardous materials regulations, including proper placarding, handling, and emergency response.

Requirements and Costs

Both endorsements require you to pass a written knowledge test at your state’s DMV or licensing office. You must also hold a valid CDL and pass a background check for hazmat. Here’s a breakdown of typical costs and steps (as of 2026):

Endorsement	Written Test Fee	TSA Background Check	Endorsement Fee (varies by state)	Total Estimated Cost
Tanker (N)	$10-$30	Not required	$10-$30	$20-$60
Hazmat (H)	$10-$30	$86.50 (renewal every 5 years)	$10-$30	$106-$146 (initial)

Note: Some states bundle endorsement fees with the CDL renewal. Check your state’s fee schedule.

Training and Testing

Tanker Endorsement

You can prepare with a tanker manual from your state’s DMV or online practice tests. Many trucking schools include tanker training in their CDL program, but it’s not mandatory. The written test typically has 20-30 questions, and you need a passing score (usually 80%). No additional road test is required if you already have a CDL.

Hazmat Endorsement

You must pass a TSA background check, which includes fingerprinting and a review of your criminal history. The written test covers hazardous materials regulations, which are more complex than tanker rules. Expect 30-40 questions, and you need a score of 80% or higher. Some employers require hazmat training (such as the 8-hour HAZWOPER course) even though it’s not a CDL requirement.

Career Opportunities and Pay

Tanker Endorsement

Tanker jobs are common in fuel delivery, food-grade liquid transport (milk, cooking oil), and chemical hauling. Pay often ranges from $50,000 to $80,000 per year for experienced drivers, with some regional fuel haulers offering $70,000-$90,000. Tanker work can be more physically demanding and often involves more stops, but it’s steady.

Hazmat Endorsement

Hazmat jobs include hauling chemicals, explosives, or waste, and they often pay a premium. Drivers with hazmat can earn $55,000 to $85,000 annually, with specialized hazmat tanker roles (combining N and H) reaching $90,000 or more. Hazmat also opens doors to jobs with major carriers that require the endorsement for certain lanes.

Which Should You Get First?

If you’re just starting, consider your target job. Fuel haulers often require both tanker and hazmat because fuel is a hazardous liquid. If you want to haul milk or water, only tanker is needed. If you want to haul packaged chemicals, only hazmat is needed. Many drivers get both to maximize opportunities, but the hazmat background check can take 4-6 weeks, so plan ahead.

Practical Steps You Can Take This Week

1. Check your state’s CDL manual for endorsement sections. Download it from your DMV website.
2. Take a free practice test for tanker and hazmat to gauge your knowledge.
3. Schedule your TSA background check if you’re leaning toward hazmat. You’ll need to provide fingerprints and pay the fee.
4. Talk to local trucking companies about which endorsements they prefer. Ask about pay differences and job availability.
5. Study the hazmat regulations if you choose that path, as the test is more detailed.

FAQ

Can I get both endorsements at the same time?

Yes, you can take both written tests on the same day at most DMVs. You’ll need to pass both and pay separate fees. The hazmat background check is separate and must be completed before the hazmat endorsement is issued.

Do I need a hazmat endorsement for a tanker carrying water?

No, water is not a hazardous material. You only need the tanker endorsement for bulk liquid transport. However, if the tanker carries a hazardous liquid like gasoline, you need both.

How long does the hazmat background check take?

Typically 4-6 weeks, but it can vary. Start early if you have a job offer pending.

Do endorsements expire?

Yes, both are tied to your CDL renewal, which is usually every 5-8 years depending on your state. Hazmat also requires a TSA background check renewal every 5 years.

The Bottom Line

The tanker endorsement is simpler, cheaper, and faster to get, making it a good first step. The hazmat endorsement requires more paperwork and a background check, but it can unlock higher-paying jobs and more diverse opportunities. If you’re serious about tanker work, plan to get both, as many employers prefer or require the combination. Start with the tanker manual and a practice test to see which feels more relevant to your goals.