Motor truck cargo insurance covers a for-hire trucker's legal liability for loss or damage to the freight it hauls for others. It is an inland marine coverage, not part of the auto policy, and it responds when a load is destroyed in a wreck, stolen from a trailer, or spoiled in transit and the shipper looks to the carrier to pay. Since 2011 the FMCSA has not required most carriers to carry it, but nearly every shipper and freight broker does.
If you run trucks for hire, this is the policy that stands between a single bad load and writing a five-figure check to a shipper. The coverage itself is only half the story. What you owe the shipper in the first place is set by federal law and the bill of lading, and the exclusions buried in cargo forms decide more claims than the limit does.
Motor Truck Cargo Insurance
Motor truck cargo insurance is an inland marine policy that covers a motor carrier's legal liability for physical loss or damage to the property of others being transported for hire. It typically applies while cargo is on a scheduled or described vehicle and, on many forms, during loading and unloading.
What is motor truck cargo insurance?
Motor truck cargo insurance protects a trucking company against its liability for the freight in its trailers. When a carrier hauls goods for a fee and those goods arrive damaged, short, or not at all, the shipper's claim lands on the carrier. The cargo policy pays that claim, up to its limit, when the loss comes from a covered cause.
It sits in the inland marine insurance family because it covers property in transit rather than property at a fixed location, and it fills a hole the business auto policy leaves wide open. Auto liability covers injury and damage the truck does to other people, never the load inside the trailer.
The coverage is specifically for carriers hauling property of others. A business moving only its own goods in its own trucks buys an owners' cargo form or a transportation policy instead, because it has no liability exposure to a customer for the load. A private carrier that hauls someone else's freight on a return trip, a practice called backhauling, becomes a for-hire carrier for that leg and needs motor truck cargo coverage or a backhauling endorsement for it.
How does carrier liability work under the Carmack Amendment?
The Carmack Amendment, enacted in 1906 and now part of the ICC Termination Act, makes an interstate common carrier strictly liable for the goods it transports. Strict liability means the shipper never has to prove the driver did anything wrong. The shipper only proves the goods were in good condition at pickup, arrived damaged or not at all, and what the damages are. The carrier escapes only by showing it was free of negligence and that one of five recognized exceptions caused the loss.
Those exceptions are acts of God, acts of a public enemy, acts or default of the shipper, action of public authority, and the inherent vice or nature of the goods. A hijacker is not a public enemy, and driving into a forecast nor'easter forfeits the act of God defense.
The liability picture changes with the type of carrier, which is why underwriters ask how you operate:
| Carrier type | Who it hauls for | Liability basis |
|---|---|---|
| Common carrier | The general public, for hire | Strict liability under federal law, five exceptions only |
| Contract carrier | Specific shippers under contract | Whatever the contract says |
| Private carrier | Its own goods, own trucks | No cargo liability to a customer |
The bill of lading then sets how much of the loss the carrier owes. Under a released bill of lading the carrier's responsibility is capped at a stated value, often per pound, which Carmack permits as long as the shipper had a real choice between liability levels. Under a uniform or valued bill of lading the shipper declares the value and pays a higher freight rate for it. A carrier can pay a claim, deny it under one of the five exceptions, or pay the reduced amount the bill of lading supports.
What does motor truck cargo coverage pay for?
Motor truck cargo coverage pays for direct physical loss to covered freight from a covered peril while the load is in your care, typically on a scheduled power unit and during loading and unloading. Collision, overturn, fire, and theft are the core perils on every form. Valuation usually follows the invoice plus accrued and prepaid charges, with actual cash value as the fallback when no invoice exists. Most cargo forms are proprietary rather than ISO standard, so these details move from insurer to insurer and the form deserves a close read.
Beyond the load itself, better forms pick up the expenses a cargo loss drags along. Debris removal pays to clear a spilled load from the roadway, and pollutant cleanup coverage handles extraction when the cargo contaminates land or water. The AAIS inland marine forms carry a $10,000 annual aggregate for pollutant cleanup, and proprietary cargo forms sit in the same neighborhood. A tanker of anything that qualifies as a pollutant will blow through that in an afternoon, so chemical haulers pair cargo coverage with pollution liability on the auto policy.
Refrigerated haulers should confirm reefer breakdown coverage is included rather than assumed. Base forms cover spoilage only when a covered peril like collision knocks out the refrigeration unit. Mechanical breakdown of the reefer with no other peril involved needs its own endorsement, and shippers of produce and frozen goods routinely refuse to tender loads to a carrier whose certificate does not show it.
What exclusions and warranties limit motor truck cargo coverage?
The exclusions are where cargo claims die, and most of them are conduct-based rather than peril-based. Unattended vehicle provisions are the most litigated example. Under language like the AAIS Unattended Vehicle Exclusion (IM 7267 05 07), theft coverage applies only if an employee or owner-operator is in or on the vehicle when the theft happens, whether in transit or at a stop for loading and unloading.
A driver who walks a delivery to the door and returns to a looted trailer has no theft coverage under that wording. Insurers write the same idea as warranties requiring locked and secured trailers, kingpin locks, or parking in fenced lots overnight.
Reefer breakdown endorsements carry their own conditions. The AAIS version, the Refrigeration Breakdown Endorsement (IM 7275 01 12), excludes losses from failing to keep the unit fueled and requires the refrigeration unit to be inspected at least monthly, with inspection records kept for a year. Miss the inspections and a $200,000 melted load is entirely yours. Forms also commonly exclude high-value target commodities such as jewelry, precious metals, art, and furs, along with contraband, money and securities, and dishonest acts of your own employees.
Is motor truck cargo insurance required by the FMCSA?
For most carriers, no. The FMCSA eliminated its cargo insurance requirement effective March 21, 2011, along with the BMC-32 endorsement filing that for-hire property carriers had made for decades. The old minimums were $5,000 per vehicle and $10,000 per occurrence, so far below real freight values that the agency concluded the filing served little purpose. Household goods motor carriers and freight forwarders are the exception and still must file evidence of cargo coverage, because the FMCSA judged individual moving customers less able to protect themselves than commercial shippers.
Do not confuse cargo filings with the MCS-90 endorsement. The MCS-90 attaches to the auto liability policy and guarantees the federal public liability minimums for bodily injury, property damage, and environmental restoration. It has nothing to do with freight in the trailer, and carrying it does not mean you have cargo coverage.
How much cargo insurance do truckers need?
Since the federal minimums disappeared, the market sets the number and contracts do the enforcing. Most broker-carrier agreements specify $100,000 as the minimum cargo limit, and brokers verify the certificate before tendering a single load. Haul refrigerated food, electronics, or other theft-prone freight and shippers will push for more, sometimes $250,000 on high-value lanes.
The right limit is the value of the heaviest load you actually book, not the average, because the policy pays per occurrence and one full trailer of electronics can exceed a produce hauler's annual premium many times over.
Deductibles and commodity fit matter as much as the limit. A $1,000 deductible is common, and carriers with theft losses see $2,500 or more on target commodities. New-authority carriers and fleets with claims frequently end up in the excess and surplus lines market, where forms vary even more and non-admitted carriers are not backed by state guaranty funds.
Get the quote in front of a broker who reads trucking forms for a living, and make the certificate match what your shipper contracts promise. The gap between those two documents is where uncovered losses live.
Frequently asked questions
Is motor truck cargo insurance required by law?
Not federally for most carriers. The FMCSA eliminated its cargo insurance filing requirement effective March 21, 2011, keeping it only for household goods movers. In practice it is still mandatory, because shipper and freight broker contracts almost universally require proof of cargo coverage, typically at a $100,000 limit, before any load is tendered.
What is the difference between motor truck cargo insurance and a transportation policy?
Motor truck cargo covers a for-hire carrier's liability for other people's freight. A transportation policy is first-party coverage a shipper buys on its own goods in transit, whether they move on its trucks or a hired carrier's. A shipper with its own transportation policy gets paid without proving the carrier was liable, and its insurer pursues the carrier afterward through subrogation.
Does motor truck cargo insurance cover a reefer breakdown?
Only if the policy includes a reefer breakdown endorsement. Base forms cover spoilage when a covered peril such as a collision damages the refrigeration unit, but not when the unit simply fails on its own. The endorsement usually comes with maintenance warranties, including monthly documented inspections, and skipping them can void the coverage entirely.
Does the MCS-90 endorsement cover cargo?
No. The MCS-90 is a public liability endorsement on the auto policy that guarantees federal minimums for bodily injury, property damage, and environmental restoration to the public. Freight in your trailer is not the public for this purpose, and cargo claims fall entirely outside it.
This guide is for educational purposes and summarizes standard ISO and AAIS policy language. Your policy's specific terms, conditions, and endorsements control. Talk to a licensed broker about your actual exposures.
