Blog / Commercial Auto

What is an MCS-90 endorsement and does it protect me?

The MCS-90 guarantees payment to the public, not coverage for you. What it does, what it does not, and why the difference can cost you.

Updated September 8, 2026 · 3 min read · by Gerino Alejos

The MCS-90 does not protect you. It is a federal endorsement, an add on to your liability policy, that promises the public will be paid up to the federal minimum. If the policy would not have covered the loss, the insurer can come back to you for the money. Carriers ask for it, brokers ask for it, and most operators believe it is coverage. It is not.

What the MCS-90 endorsement actually is

The MCS-90 is a federal endorsement attached to a motor carrier's liability policy. It guarantees the insurer will pay a judgment for injury or property damage caused by the carrier's operation, up to the required minimum, even if the policy would not otherwise cover that loss. It is required by 49 CFR 387.15 for carriers under the federal financial responsibility rules. The form itself is published by the FMCSA.

The reimbursement clause people miss

If the insurer pays under the MCS-90 for something the policy did not cover, it has the right to collect that money back from you. Every dollar of it. The form says so directly. The insured agrees to reimburse the company for any payment it would not have owed under the policy except for the endorsement.

Say a carrier is operating outside the terms of its policy, for example hauling a commodity the policy excludes. The injured person may get paid, and the insurance company may then send the carrier a bill. The public is protected. The carrier is not.

What it does not do

• It does not cover damage to your own truck
• It does not cover your cargo, and it does not cover injuries to your own employees. The form excludes both
• It does not raise your policy limits beyond the federal minimum
• It does not fix a gap in the coverage underneath it

What to do with that information

Treat the MCS-90 as a compliance document, not as protection. The protection comes from having the right coverage underneath it: the right radius, the right commodities, every driver listed, every truck listed. See how filings and authority work.

• Tell your agent exactly what you haul and where, and update it when it changes
• Read the exclusions on your liability policy, especially the commodity and radius limits. Cargo has its own policy; see motor truck cargo coverage.
• Keep the driver list current. An unlisted driver is a classic reason a claim falls outside the policy
• If you add a new commodity or a new lane, call before the first load, not after. See why radius matters and keeping the driver list current.

We keep the underlying policy honest

The goal is never to need the MCS-90 to do anything. We will make sure your policy matches your real operation. Use the commercial quote form on this page, or call our McAllen office at (956) 687 3334. Se habla español.

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Gerino Alejos

Licensed insurance agent · License 3128710 · NPN 18243381

Owner of McAllen Insurance Group, an independent agency on North 10th Street in McAllen. Works with clients across Hidalgo, Cameron and Starr counties on Medicare, Marketplace health, life and auto coverage. Se habla español.