FMCSA Minimum Insurance Requirements for Commercial Trucks — What Every Agent Needs to Know Cold

Federal minimums aren't suggestions. They're the floor — and for retail agents writing commercial trucking accounts, knowing the exact numbers by operation type is the difference between a compliant client and a very uncomfortable conversation after a loss.

What FMCSA Requires — Liability Limits by Operation Type

The Federal Motor Carrier Safety Administration sets minimum primary auto liability limits for interstate motor carriers based on what they haul and how they're classified. These aren't one-size-fits-all numbers, and getting them wrong creates real exposure for your client — and for you.

Here's how the federal minimums break down:

• $750,000 — General freight carriers operating vehicles with a gross vehicle weight rating (GVWR) over 10,001 lbs. This covers the majority of dry van, flatbed, and general commodity operations.
• $1,000,000 — Non-hazardous oil transported in cargo tanks, and carriers hauling specific commodities designated by FMCSA as higher risk.
• $5,000,000 — Hazardous materials classified as Class A or Class B explosives, radioactive materials, and other high-consequence commodities listed in 49 CFR Part 387.

If your client hauls oilfield equipment or crude in Texas, operates tankers, or moves anything that triggers a hazmat classification, the $750,000 number doesn't apply to them. Know the number before the DOT asks.

The MCS-90 Endorsement — What It Is and Why It Matters

The MCS-90 is one of the most misunderstood documents in commercial trucking insurance, and agents writing transportation accounts need to understand it well enough to explain it clearly to a client at 8 a.m. on a Monday.

Here's what it actually does: the MCS-90 is a mandatory endorsement attached to the primary liability policy of any federally regulated motor carrier. It obligates the insurer to pay a judgment for bodily injury or property damage caused by the carrier — even if the policy would otherwise exclude the claim. That last part is what catches people off guard. The endorsement exists to protect the public, not the carrier. If the insurer pays out under the MCS-90, they have the right to seek reimbursement from the insured for any amount paid that fell outside normal policy coverage.

A few things agents need to keep straight about the MCS-90:

• It is required for any motor carrier that operates in interstate commerce and is subject to FMCSA financial responsibility regulations.
• It does not increase the policy's liability limits — it ensures the insurer backs the minimum required limit even when a policy exclusion might otherwise apply.
• It is not a substitute for proper underlying coverage. Carriers who rely on the MCS-90 as a safety net are operating on thin ice — and so are their agents.
• It applies to the specific vehicles and operations listed on the carrier's FMCSA registration, not the policy as a whole.

If your client hauls across state lines and you haven't had this conversation yet, now is the time.

Why Federal Minimums Are the Starting Point — Not the Finish Line

FMCSA sets the floor. What actually governs your client's real-world exposure is often much higher — and agents who stop at federal compliance are leaving coverage gaps that a loss will eventually find.

Three layers frequently push required limits above the federal minimums:

• State requirements. Several states impose liability minimums that exceed FMCSA's baseline for certain operations or vehicle classes. A carrier domiciled in one state but operating across multiple states needs a coverage review that accounts for the most restrictive jurisdiction in their lane.
• Shipper and broker contractual requirements. Large shippers and freight brokers routinely require $1 million or more in auto liability as a condition of doing business — regardless of what FMCSA mandates. A carrier who is federally compliant but fails to meet a shipper's contractual threshold can lose freight contracts or face personal liability for any gap.
• Actual loss exposure. A $750,000 limit sounds substantial until a serious accident involves multiple vehicles, fatalities, or cargo that causes secondary damage. Excess liability coverage exists precisely because primary limits get exhausted faster than most carriers expect.

The review that prevents the phone call you don't want to make starts before the policy binds — not after the claim comes in.

How E&S Markets Help When Standard Markets Can't

Not every trucking risk fits a standard admitted market, and federal compliance doesn't make a risk any easier to place if the carrier's profile — commodity type, loss history, radius of operation, or equipment age — falls outside standard market appetite.

This is where E&S placement becomes a practical tool for retail agents, not a last resort. Excess and surplus lines markets are specifically structured to accommodate non-standard risks, and for commercial trucking, that means carriers who haul oilfield commodities, operate in high-loss corridors, or run specialty equipment can still get the coverage FMCSA requires — placed on a non-admitted basis with markets that understand the risk.

Partnersure places commercial trucking coverage exclusively on an E&S basis. Our programs are built for the risks that standard markets decline or price out of reach, and we work with appointed retail agents to structure coverage that meets federal minimums and goes beyond them where the client's actual exposure demands it. If you're writing transportation accounts and running into standard market walls, our programs are worth a conversation.

FMCSA Insurance Requirements — Frequently Asked Questions