Motor truck cargo insurance pays for freight you are legally responsible for when it's lost, damaged, or destroyed while in your possession under a bill of lading. It does not cover everything β and the gap between what carriers assume it pays and what it actually pays is where most cargo claims get denied. This article walks through what the coverage does, the exclusions that trip carriers up, the limits brokers require, and where owner-operators commonly end up under-insured.
What motor truck cargo insurance covers
Motor truck cargo insurance (sometimes called cargo legal liability) is a first-party-for-your-customer coverage. You cause damage to someone else's freight β the cargo policy responds, up to its limit and subject to its terms.
Typical covered causes of loss on a standard motor truck cargo form:
- Collision or overturn β the most common paid cargo claim. Freight damaged in a crash, jackknife, or rollover.
- Fire β trailer fires, tractor fires that spread to the load.
- Theft of the entire vehicle β the truck and trailer are stolen with the load inside.
- Loading and unloading damage β sometimes. This varies by form and often needs to be added. Check whether your policy includes it.
- Water damage β often limited to "driven water" or excluded for certain commodities. Read the form.
The key concept is legal liability. The cargo policy pays when you would be held responsible under the bill of lading or contract. If the shipper loaded and braced the freight improperly and your contract says that's their responsibility, the cargo policy may not owe β that goes back to the shipper.
For context on frequency: FMCSA's insurance filing requirements page covers what the federal government actually mandates, and cargo coverage is not on that list for general freight. It exists because of contracts, not statute.
One number to anchor on
Cargo insurance is typically written at limits of $20,000 to $250,000, with $100,000 being the most common placement for general freight dry van operations. The premium for cargo coverage itself is usually a fraction of your auto liability cost β ATRI's 2024 operational cost data pegged total insurance premiums for truckload carriers at roughly 10 cents per mile, and cargo is one smaller slice of that.
What cargo insurance does NOT cover: the common exclusions
This is the section worth reading twice. Most denied cargo claims fall into one of these buckets.
| Exclusion | What it means in practice | What to do about it |
|---|---|---|
| Refrigeration breakdown | Reefer unit fails, load spoils, standard cargo policy denies. | Buy a reefer breakdown endorsement with spoilage coverage. |
| Theft from an unattended vehicle | Trailer is broken into while parked and unattended β often excluded or heavily restricted. | Check your theft clause: many forms require the vehicle to be attended, in a secure lot, or that theft occurred within a set time of delivery. |
| Contraband and illegal cargo | Undeclared, illegal, or prohibited freight is never covered. | Know what's in your trailer. Hauling for unknown brokers with sealed loads carries this risk. |
| Owner's goods | Your own property β tools, tarps, straps, personal items, your own equipment. | Physical damage covers the truck; onboard equipment coverage or inland marine can cover tools and tarps. |
| Improper packing/bracing | Load shifts because of how it was loaded or secured. | Document loading conditions, use dashcam, note exceptions on the bill of lading. |
| Wear and tear / inherent vice | Freight that naturally deteriorates β produce ripening, metal rusting. | Not insurable on standard forms. Managed through transit time and contract terms. |
| Currency, jewelry, art | High-value specialty items usually excluded outright. | Shipper arranges their own coverage or a specialty policy is written. |
Reefer breakdown, explained
If you haul temperature-controlled freight, this is the exclusion that matters most. A standard motor truck cargo form covers a collision that damages a reefer load. It does not cover a reefer unit that stops holding temperature on a clean run down I-70. That's a mechanical failure, and it needs a reefer breakdown endorsement β a separate coverage with its own limit, its own deductible (often $1,000β$2,500), and usually a requirement that you show temperature logs or set-point records. If your reefer policy has a "continuous running" or "pre-cooled" condition, document it. Spoilage claims without temperature documentation get denied regularly.
Theft from unattended vehicles
Cargo theft is a real cost in this industry. CargoNet's public reporting through 2024 recorded thousands of cargo theft events per year across the US and Canada, with average loss values frequently exceeding $100,000 per event in recent quarters β see CargoNet's news center for current figures. But here's the part carriers miss: many cargo policies restrict or exclude theft from a vehicle left unattended. Common conditions include the vehicle being parked at a secure facility, attended, or that the loss occurred while en route. Parking a loaded trailer at an unsecured truck stop overnight and losing the load can be a fight with the carrier. Read your theft clause before you park a full load.
Owner's goods
Cargo insurance covers freight belonging to others, hauled for hire, under a bill of lading. Your own straps, load bars, tools, pallet jack, and personal belongings in the cab are not freight β they're your property, and standard cargo forms exclude them. Straps and tarps can usually be added as scheduled coverage. Tools and personal items often need a small inland marine or tools coverage endorsement.
Broker-required cargo limits: what shippers actually demand
Federal minimum financial responsibility for interstate general freight is $750,000 in auto liability β that's the FMCSA filing. Cargo coverage is not federally mandated for most commodities. But try booking a load without it.
Brokers set cargo minimums contractually through their broker-carrier agreements and certificates of insurance. The pattern as of early 2025:
| Freight type | Common broker cargo requirement |
|---|---|
| General dry van freight | $100,000 |
| Refrigerated freight | $100,000β$150,000, plus reefer breakdown often required |
| Automotive / higher-value freight | $150,000β$250,000 |
| Building materials, machinery | $100,000β$250,000 depending on load value |
| Household goods (interstate) | $5,000 per vehicle (federal requirement under 49 CFR 13906) |
The most common requirement you'll see is $100,000 cargo on top of $1,000,000 auto liability. Many brokers now ask for $1M liability even though the federal floor is $750K β that's market pressure from shippers, not regulation.
Matching your limit to the loads you actually haul
Here's where under-insurance happens. A carrier buys $100,000 cargo because that's what their first broker asked for. Then they accept a load of machinery worth $210,000. If that load is destroyed in a crash, the cargo policy pays $100,000. The cargo claimant β broker or shipper β pursues the carrier for the remaining $110,000. That's your business and potentially your personal assets if you're a single-member LLC without proper structure.
The rule I give carriers: your cargo limit should match the highest load value you will accept, not the lowest limit a broker will accept from you. If you regularly haul loads worth $150Kβ$250K, insure to that level. The premium difference between $100K and $250K cargo is usually modest compared to the exposure.
How carriers end up under-insured: four patterns
- Buying the minimum to get authority. New authority carriers often buy $50K or $75K cargo to save premium, then take loads worth double that. Works until it doesn't.
- Assuming reefer breakdown is included. Reefer operators who buy "cargo coverage" without the spoilage endorsement have a policy that won't pay their most likely claim.
- Hauling outside stated commodities. Cargo policies list covered commodities. If your policy says dry van general freight and you take a load of produce or electronics without telling your agent, coverage can be questioned.
- Radius and territory drift. Some cargo forms carry radius restrictions or exclude certain territories. A carrier operating beyond the stated radius creates a coverage argument at claim time.
One number for this section: per ATRI's 2024 cost-of-operations report, insurance premium averaged about 10.0 cents per mile for truckload carriers β a real cost line, but small against a single six-figure cargo claim you're personally absorbing because your limit was too low.
Working with your broker on cargo coverage: a checklist
- Confirm your cargo limit matches your highest realistic load value.
- If you run reefer, verify the reefer breakdown endorsement β limit, deductible, and documentation requirements.
- Read the theft clause. Know the conditions before you park a loaded trailer.
- Make sure your commodity list matches what you actually haul, and tell your agent when it changes.
- Ask whether loading/unloading coverage is included or excluded on your form.
- Get certificates issued at the limits your brokers require β before you book, not after.
If you're comparing your current setup against the market, we quote cargo coverage as part of a full package β you can request a quote here. If you're still building your authority, our owner-operator insurance by state guide breaks down what's required where you operate, and Indiana carriers can see state-specific notes on our Indiana commercial truck insurance page.
How cargo limits interact with your other coverages
Cargo doesn't sit alone. Your auto liability pays for damage you cause to other people and property in a crash. Your cargo coverage pays for the freight in your trailer. Your physical damage pays for your truck and trailer. And truckers general liability covers you away from the truck β damage at a dock, injury on a shipper's property. Many broker agreements now require GL at $100,000 alongside the liability and cargo minimums. If you're unclear how these stack, our piece on the MCS-90 endorsement explains how the federal filing works versus your actual policy terms.
One clarification worth making: the FMCSA filing ($750K auto liability for freight carriers) proves financial responsibility to the government. It says nothing about your cargo limit, your deductibles, or your exclusions. Brokers look at the certificate, which shows actual policy limits.
FAQ
Is motor truck cargo insurance required by FMCSA?
No. For general freight interstate authority, FMCSA requires a $750,000 auto liability filing β not cargo. Cargo is a contractual requirement from brokers and shippers. Household goods carriers are an exception, with a federal cargo requirement of $5,000 per vehicle.
What cargo limit do most freight brokers require?
$100,000 for general freight is the standard. Reefer and higher-value freight often pushes to $150,000 or $250,000. Confirm before booking β taking a $200K load on a $100K policy is a self-insured gap.
Does cargo insurance cover refrigeration breakdown?
Not on the standard form. Reefer breakdown is an endorsement with its own limit, deductible, and temperature documentation requirements. If you haul temperature-controlled freight, it's not optional in practice.
Does cargo insurance cover my own belongings?
No. It covers freight you haul for others under a bill of lading. Your truck is a physical damage claim. Tools, straps, and personal items need separate coverage.
What's the deductible on cargo coverage?
Typically $1,000, sometimes $2,500. Reefer breakdown endorsements often carry their own separate deductible. Higher deductibles reduce premium but increase what you absorb on every claim.
Bottom line
Motor truck cargo insurance pays for other people's freight damaged, lost, or destroyed while it's in your care β subject to real exclusions: reefer breakdown, theft from unattended vehicles, contraband, and owner's goods are the big four that surprise carriers. Match your limit to your highest realistic load value, not the broker minimum, and verify your endorsements match what you actually haul. That single discipline prevents most cargo coverage disputes before they start.
Written by Nazar Mamaev, Full Coverage LLC, Indianapolis, IN β February 2025. Full Coverage LLC is an independent insurance brokerage and is not affiliated with any insurer, broker platform, or data vendor named in this article, including CargoNet.