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MCS90 Insurance Requirements to Stay DOT Compliant

September 15, 2025

When operating in the trucking and transportation industry, staying compliant with the Department of Transportation (DOT) is not just a legal requirement, but also an essential part of protecting your business. One of the most important compliance elements is MCS90 Insurance. Designed to guarantee financial responsibility for carriers and freight operators, MCS90 Insurance ensures that victims are compensated in the event of an accident, even if the carrier’s primary policy doesn’t cover it.

In this blog, we’ll break down what MCS90 Insurance is, why it’s necessary, and the requirements you need to meet to remain DOT compliant.

Minimum Liability Coverage Requirements for Trucking Companies

Before understanding MCS90 Insurance, it’s important to know the minimum liability coverage requirements set by the FMCSA. The coverage you need depends on the type of freight you haul and the weight of your vehicle:

  • Non-hazardous cargo in vehicles weighing over 10,001 pounds: Minimum coverage of $750,000.
  • Hazardous material carriers: Must maintain $5,000,000 in liability coverage.
  • Oil transport trucks: Require $1,000,000 of coverage.
  • Non-hazardous freight in vehicles under 10,001 pounds: Minimum coverage of $300,000.

These baseline requirements form the foundation of DOT compliance, and the MCS90 endorsement ensures these responsibilities are met, even if your liability policy doesn’t fully cover an incident.

What is MCS90 Insurance?

MCS90 Insurance is an endorsement required by the Federal Motor Carrier Safety Administration (FMCSA) for certain motor carriers. It acts as a safety net, ensuring that compensation is available to the public if a trucking company’s liability policy does not cover damages resulting from an accident involving hazardous materials or interstate operations.

In short, the MCS90 Insurance endorsement is not coverage for your trucking company itself. It’s a legal guarantee of financial responsibility to protect others on the road.

Why is MCS90 Insurance Important?

DOT compliance requires motor carriers to prove financial responsibility. Without MCS90 Insurance, your authority to operate could be suspended or revoked. Some of the key reasons MCS90 Insurance matters include:

  • DOT Compliance: Carriers must meet federal financial responsibility requirements to operate legally.
  • Public Protection: Ensures compensation is available for bodily injury, property damage, or environmental restoration.
  • Hazardous Materials Transport: Any business transporting hazardous materials is required to maintain MCS90 Insurance.
  • Interstate Commerce: If your trucking company operates across state lines, you must maintain MCS90 Insurance to stay compliant.

Who Needs MCS90 Insurance?

Not every trucking company requires MCS90 Insurance, but if you fall into one of the following categories, it’s mandatory:

  1. Carriers transporting hazardous materials.
  2. Motor carriers operating in interstate commerce.
  3. Companies required by FMCSA to maintain proof of financial responsibility.

If your business falls into these categories, having MCS90 Insurance is non-negotiable.

MCS90 Insurance Requirements for DOT Compliance

To stay compliant with DOT and FMCSA regulations, carriers must:

  1. Maintain Proper Liability Coverage: Your liability limits depend on the type of cargo you haul. Hazardous material haulers typically require higher coverage amounts.
  2. Attach the MCS90 Endorsement: Your insurance provider must attach the MCS90 Insurance endorsement to your liability policy.
  3. Provide Proof of Financial Responsibility: Carriers must file proof with FMCSA, usually through Form BMC-91 or BMC-91X.
  4. Renew Policies On Time: Ensure that your MCS90 Insurance endorsement is always active, as lapses can lead to DOT penalties or suspension of operating authority.

By following these requirements, trucking companies can avoid costly fines, protect their operating authority, and build trust with shippers and clients.

Common Misconceptions About MCS90 Insurance

Many carriers misunderstand MCS90 Insurance. Let’s clear up a few myths:

  • It’s Not Separate Insurance: MCS90 Insurance is an endorsement, not a standalone policy.
  • It Protects the Public, Not You: The endorsement ensures victims are paid, but it doesn’t protect your business assets.
  • It Doesn’t Replace Cargo Insurance: You’ll still need other coverage, such as cargo insurance, general liability, or workers’ compensation, depending on your operations.

Penalties for Not Having MCS90 Insurance

Failure to maintain MCS90 Insurance can lead to severe consequences, including:

  • Loss of DOT operating authority.
  • Hefty fines and penalties.
  • Legal liability for uncovered claims.
  • Damage to your reputation as a reliable carrier.

To avoid these penalties, make sure your MCS90 Insurance endorsement is always in place and updated.

How to Stay DOT Compliant with MCS90 Insurance

Staying compliant doesn’t have to be complicated. Work with a trusted insurance provider who understands the transportation industry and can guide you through the MCS90 Insurance requirements. Here’s what you should do:

  • Review your coverage needs based on cargo and routes.
  • Verify your policy includes the MCS90 Insurance endorsement.
  • Keep your insurance filings up to date with FMCSA.
  • Regularly review policies to ensure they meet DOT regulations.

Final Thoughts

For trucking companies and motor carriers, MCS90 Insurance is more than just a requirement; it’s a safeguard that ensures compliance with federal laws and protects the public. While it doesn’t directly benefit your company in terms of coverage, it is essential for maintaining your DOT authority and reputation in the industry.

Get Covered Today

At Alvix Insurance Group, we specialize in providing reliable and affordable MCS90 Insurance for motor carriers, hazardous material haulers, and interstate operators. Our team understands the unique risks you face on the road and the strict DOT requirements you must meet, and we’re here to design coverage that fits your exact needs.

Don’t wait until a compliance issue or unexpected claim puts your business at risk. Let Alvix Insurance Group help you secure the right MCS90 Insurance today.