MCS-90 Coverage for Truck Accidents

Sam Aguiar Injury Lawyers • September 16, 2026 • 2 minute read
Row of white semi-truck tractors parked outside a warehouse

MCS-90 coverage is one of the most misunderstood parts of a commercial trucking case. The FMCSA explains that the MCS-90 endorsement is required by federal regulation under 49 CFR 387.15 and is attached to the motor carrier’s liability policy for public liability.

Federal Endorsement Requirement

The MCS-90 endorsement is a federal surety-style backstop, separate from ordinary policy coverage. The injured person still has to prove the trucking case, obtain the coverage records, and answer any policy defenses the insurer raises. The endorsement carries the most weight when a final judgment exists and ordinary coverage analysis leaves a public-liability judgment unpaid within the required financial responsibility limits.

Every carrier operating under FMCSA authority must file proof of financial responsibility as a condition of that authority. Those filings, and the policy behind them, are part of the trucking company insurance requirements reviewed in any serious truck accident injury claim.

When the MCS-90 Applies

The MCS-90 applies to final judgments for public liability from negligent operation, maintenance, or use of covered motor vehicles. It is a public-protection obligation that takes effect after a judgment, and it adds no money on top of a claim that ordinary coverage already pays.

Applying it takes the full coverage file: the policy, the endorsement, the motor carrier’s operating authority, the vehicle involved, the driver relationship, the cargo, and the available primary and excess coverage. The endorsement is powerful only when those facts fit the federal financial responsibility rules.

Payment Order for Truck Crash Coverage

The MCS-90 sits last in the order of coverage that pays a truck crash claim.

MCS-90 Coverage Pays After Every Other Policy

Typical order of coverage for an interstate motor carrier crash claim

1

The motor carrier’s primary auto liability policy pays first. Interstate carriers hauling general freight must carry at least $750,000 under 49 CFR 387.9, and carriers of certain hazardous materials must carry $5 million. Most truck crash claims are paid here.

2

Excess and umbrella coverage comes next. Larger carriers stack additional limits above the primary policy, and serious injury claims are often paid from these layers.

3

Other applicable coverage, such as trailer interchange or a broker or shipper policy where that company controlled the load or the hiring, can respond before the federal endorsement. A freight broker’s liability after a truck crash depends on that control.

4

The MCS-90 endorsement is the safety net of last resort. Under 49 CFR 387.15, it makes the insurer pay an injured member of the public up to the federal minimum when the underlying policy would otherwise deny the claim. The insurer pays the injured person first, then may seek reimbursement from the trucking company.

Source: Federal Motor Carrier Safety Administration

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Frequently Asked Questions

1What is the MCS-90 endorsement?+
The MCS-90 is a mandatory endorsement attached to a trucking company’s liability policy under 49 CFR 387.15. It requires the insurer to pay qualifying public-liability judgments against the carrier up to the federal minimum limits, even when the policy would otherwise deny the claim.
2When does the MCS-90 come into play?+
The MCS-90 comes into play when ordinary policy coverage does not satisfy a qualifying public-liability judgment against the motor carrier. The case still has to fit the federal endorsement, and the judgment still has to be won.
3Does the MCS-90 add money on top of the regular insurance?+
No. The MCS-90 is a federal public-protection obligation that may require payment of a qualifying final judgment when ordinary policy coverage would not satisfy it. Primary, umbrella, and excess policies are analyzed separately for amounts above the required limits.
4What are the federal minimum insurance requirements for trucking companies?+
Under 49 CFR 387.9, interstate carriers hauling general freight must carry at least $750,000, and carriers of certain hazardous materials must carry $5 million.
5How can a carrier’s MCS-90 endorsement be confirmed?+
Carriers operating under FMCSA authority must file proof of financial responsibility as a condition of that authority. The endorsement and the policy behind it can be obtained through FMCSA records and formal discovery in litigation.

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