Tanker truck insurance

Tanker insurance minimums by cargo

What you haul drives the minimum, not just how big the tank is. These figures are set by 49 CFR 387.9, the federal regulation covering truck liability limits.

A private carrier is a company moving its own products rather than hauling freight for others in exchange for payment. With non-hazardous cargo, only carriers hauling for pay must meet the $750,000 requirement. When it comes to oil and bulk hazardous substances, those two tiers, $1,000,000 and $5,000,000, apply whether you're being paid to haul or moving your own product.

There's also a separate category in the rule for trucks under 10,001 lbs that travel across state lines. For fleets of only these lighter trucks hauling non-hazardous goods, the $300,000 figure comes from a suspended rule, so confirm the current requirement before relying on it.

Fuel tanker insurance

Oil sits in the $1,000,000 tier. That tier covers oil plus other listed hazardous materials that don't fall into the $5,000,000 groups, and it reaches both for-hire and private carriers.

Your routes decide when the rule kicks in:

• Over state lines or into another country: even a small amount of oil counts.
• Within a single state: the federal $1,000,000 rule covers bulk loads only.

When a load qualifies as a bulk cargo tank shipment of a hazardous substance, the floor jumps to $5,000,000. That higher limit holds even when you stay within your home state the whole time.

Big tanks and the $5,000,000 tier

Hazardous substances in bulk cargo tanks fall in the $5,000,000 tier. An older version of the rule, now suspended, used a tank size of over 3,500 gallons of water, so ask your agent which one applies to your tank. That same suspended list also places lighter freight trucks rated below 10,001 lbs hauling any quantity of Division 1.1, 1.2, and 1.3 cargo at $5,000,000.

Federal filing guidance likewise puts explosives, poison gas, and radioactive materials within the $5,000,000 tier, whether the carrier is for-hire or private.

Can you stack primary and excess coverage?

Yes. You can stack layers to reach your total. The first layer, the one that responds before any other policy, is what the rule names primary security.

An excess policy is the second layer, paying over the primary one until you hit the required minimum. Ask your agent how the two layers would add up for your cargo. The rule also states that carriers are never obligated to carry more than the federal minimums. Still, brokers and shippers may demand higher limits before handing you loads.

Filings you need in place before hauling

Proof of your liability limit gets sent to the federal agency by your insurer. That filing is submitted using Form BMC-91 or BMC-91X, or through a BMC-82 bond. The main steps run in this order:

1. Get a USDOT number. Trucks rated 10,001 lbs or more in interstate service need one.
2. Apply for operating authority; the fee is $300 per authority.
3. Have your insurer submit the liability form. After the application is published, your insurer gets 20 days to send it in before the application gets dismissed.
4. The 10-day protest period begins when your application is published, and your insurer's 20-day filing window also runs from publication.
5. A process agent must submit Form BOC-3 for you. No one else is allowed to file it, and every state you operate in must be listed.
6. Sign up for UCR. The 2027 fee is $55 for 0 to 2 power units.

On top of that, your liability policy must also carry the Form MCS-90 endorsement. Mexican carriers operating in the U.S. have to carry a copy of the endorsement in every vehicle they run.

Staying within one state, or leasing to a carrier

When all your hauling stays within one state, that state decides the liability minimum and what gets filed. Often the filing is a Form E from your insurer. Keep in mind the federal oil and bulk hazardous rules may still reach you.

When you lease your tanker to a carrier, that carrier's filing protects you while you run under its dispatch. Under the lease, that carrier must receive full possession of the truck, along with control over it and the right to use it. On your own, you still need non-trucking liability, also called bobtail, along with physical damage coverage for your truck.

Questions people often ask