If you ship freight in the United States, the Carmack Amendment is the single most important law protecting your right to recover when cargo is damaged, lost, or delayed. It establishes that carriers are liable for what happens to your freight while it’s in their care, and it does so without requiring you to prove the carrier was negligent.
But knowing the Carmack Amendment exists and knowing how to use it are two different things. Carriers invoke specific legal exceptions to avoid paying claims. Brokers and carriers have fundamentally different liability exposure. And the way you frame your claim – the language you use, the documents you cite, the deadlines you hit – can mean the difference between full recovery and a denial.
This guide breaks down the Carmack Amendment:
| The Carmack Amendment (49 U.S.C. § 14706) is a federal law, originally enacted in 1906, that governs carrier liability for loss, damage, or delay of cargo during interstate transportation. It creates a near-strict liability standard: if a carrier accepts freight in good condition and delivers it damaged, the carrier is presumed liable without the shipper needing to prove negligence. The law supersedes all state laws on the same subject, creating a single, uniform national standard for freight claims. |
Before 1906, interstate shipping liability was a patchwork of conflicting state regulations. A shipper moving freight from Texas to California might be subject to three different liability regimes depending on which states the freight passed through. The Carmack Amendment, first passed as part of the Hepburn Act in 1906 and extended to motor carriers by the Motor Carrier Act of 1935, solved this by establishing federal preemption. As the U.S. Supreme Court held in Adams Express Co. v. Croninger (1913), Congress intended to “take possession of this subject, and supersede all state regulation with reference to it.”
What makes the Carmack Amendment so powerful for shippers is its liability framework. Under traditional negligence law, you’d need to prove that the carrier did something wrong. Under Carmack, you don’t. You only need to establish three things, and the burden then shifts entirely to the carrier.
To establish a prima facie Carmack claim (the legal term for the initial case you must prove) a shipper must demonstrate:
Once these three elements are established, the burden shifts to the carrier to prove that it falls within one of five recognized exceptions to liability. This burden-shifting framework is what makes Carmack so favorable to shippers. It is, as Benesch Law describes it, “a near strict liability standard” for carriers.
| Carriers can avoid Carmack liability only by proving that the loss or damage was caused by one of five specific exceptions recognized under common law: (1) an act of God, (2) an act of the shipper, (3) an act of a public enemy, (4) the inherent nature of the goods (inherent vice), or (5) an act of public authority. The carrier bears the burden of proving that one of these exceptions applies, and in practice, most carrier defenses rely on just two of them: act of the shipper and inherent vice. |
What it means: The loss or damage was caused by a natural event that was unforeseeable and unavoidable, such as a hurricane, earthquake, tornado, or severe flooding.
How carriers invoke it: A carrier whose truck is struck by a tornado en route may cite act of God. The key legal requirement is that the event was both unforeseeable and unavoidable, meaning the carrier could not reasonably have anticipated it or avoided it.
How to counter it: Weather events that are seasonally predictable (winter ice on northern routes, hurricane season in the Gulf) may not qualify if the carrier could have reasonably planned for them. Check whether the carrier was warned about conditions and had alternate routing options. If the carrier chose to proceed through a known severe weather zone without taking precautions, the exception may not hold. Courts generally apply a high standard. The event must be truly extraordinary, not merely bad weather.
What it means: The loss or damage was caused by something the shipper did (or failed to do), most commonly, inadequate packaging, incorrect labeling, or inaccurate descriptions on the Bill of Lading (BOL).
How carriers invoke it: This is the most frequently invoked exception, particularly for LTL freight. The carrier argues that the packaging failed, not the handling. For example, that a pallet wasn’t properly shrink-wrapped, that cartons weren’t rated for the stacking weight they experienced, or that the product’s BOL description didn’t match its actual fragility. Carriers may also cite this exception when the shipper provided an incorrect weight, resulting in improper load balancing.
How to counter it: Document your packaging thoroughly before shipment: photograph the packed freight at origin, retain packaging specifications and test certifications (e.g., edge crush test results for corrugated cartons), and ensure your BOL accurately describes the commodity and its handling requirements. If the carrier accepted the freight without noting any packaging concerns on the BOL at pickup, that acceptance undermines their later claim that the packaging was inadequate. The carrier inspected the freight at origin and raised no objection. That’s evidence that the packaging appeared sufficient at the time of tender.
What it means: The loss was caused by acts of war, armed conflict, or terrorism. This is the narrowest and rarest of the five exceptions.
How carriers invoke it: This exception is almost never successfully invoked in modern domestic freight claims. It applies to organized armed hostilities; not to ordinary cargo theft, vandalism, or criminal activity. A shipment hijacked by a carjacker is not an “act of a public enemy” under the legal definition.
How to counter it: If a carrier cites this exception for a theft or security incident, challenge it directly. Courts have consistently held that criminal theft is not an act of a public enemy. The carrier has a duty to exercise reasonable care in securing the freight, and a theft during transit is typically evidence that the carrier failed in that duty, not that an exception applies.
What it means: The loss or damage was caused by a quality or characteristic inherent to the goods themselves – natural spoilage of perishables, evaporation of liquids, spontaneous combustion of chemically unstable materials, or natural shrinkage.
How carriers invoke it: This is the second most commonly invoked exception, particularly for temperature-sensitive freight. A carrier transporting produce that arrives spoiled may argue that the spoilage was inherent to the product’s natural perishability, not caused by any failure in the carrier’s refrigeration or handling. Similarly, a carrier transporting chemicals that react to temperature changes may claim the reaction was inherent to the product.
How to counter it: The shipper’s strongest defense against an inherent vice claim is proof that the carrier failed to maintain the required conditions. Temperature recorder data (from data loggers placed inside the shipment) showing that the carrier’s reefer unit deviated from the specified temperature range is often decisive. If your freight requires specific temperature, humidity, or handling conditions, document those requirements on the BOL, include data loggers in the shipment, and retain the recorder data as evidence. The product’s perishability is a known factor. If the carrier accepted the shipment knowing its requirements and then failed to maintain them, the inherent vice exception does not apply.
What it means: The loss or damage was caused by a government action – seizure by law enforcement, quarantine by health authorities, or confiscation by customs officials.
How carriers invoke it: A carrier whose freight is seized at a border checkpoint or quarantined by the USDA due to agricultural inspection may cite this exception. The key is that the government action, not the carrier’s conduct, caused the loss.
How to counter it: Determine whether the government action was triggered by a carrier failure. If freight was seized because the carrier provided incorrect documentation or failed to comply with regulatory requirements for the commodity being transported, the carrier’s own conduct caused the government action, and the exception should not apply. Also verify that the carrier promptly notified you of the government action; unreasonable delay in notification may constitute a separate breach.
| Exception | How Often Invoked | Key Evidence to Counter It |
| Act of God | Rare | Weather was foreseeable; carrier had alternate routes; conditions were seasonal, not extraordinary |
| Act of the Shipper | Very common (esp. LTL) | Origin photos of packaging; test certifications; carrier accepted freight without BOL exceptions at pickup |
| Act of Public Enemy | Extremely rare | Theft is not a “public enemy” act; carrier has duty to secure freight; criminal activity ≠ armed hostility |
| Inherent Vice | Common (perishables, chemicals) | Temperature data loggers; BOL specs for handling; carrier accepted requirements and failed to maintain them |
| Act of Public Authority | Uncommon | Government action triggered by carrier’s own failure (wrong docs, non-compliance); carrier delay in notification |
| No. The Carmack Amendment applies to motor carriers and freight forwarders, not to brokers. A freight broker that solely arranges transportation is generally not liable for cargo loss or damage under Carmack, because the broker does not take possession of the freight. However, the line between “broker” and “carrier” is not always clear, and a broker that assumes carrier-like responsibilities, such as issuing a BOL in its own name, may be treated as a carrier for Carmack purposes. |
The statutory definition is clear: a “carrier” or “motor carrier” is “a person providing motor vehicle transportation for compensation” (49 U.S.C. § 13102(14)). A “broker” is a person who arranges for transportation but does not provide it directly. As the court held in Wise Recycling v. M2 Logistics (N.D. Tex. 2013), a Carmack claim cannot be brought against a broker who solely arranges the transportation.
In practice, the broker-carrier distinction is not always clean. Some companies operate as both brokers and carriers depending on the load. Others issue Bills of Lading in their own name (a carrier-like act) while arranging transportation through third-party carriers (a broker-like act). Courts examine the substance of the relationship, not just the label the company uses. If a broker assumes carrier-like obligations (issuing a BOL, accepting freight, and assuming responsibility for delivery) they may be treated as a carrier and held liable under Carmack.
Even though brokers aren’t liable under Carmack, they frequently manage the claims process on behalf of their shipper customers. A shipper whose freight arrives damaged calls the broker, not the carrier, and the broker’s speed and competence in handling that claim directly impacts the business relationship. For many growing brokerages, claims management capability is a competitive differentiator, which is why platforms like FreightClaims.com are used as much by brokers as by direct shippers.
If you’re a shipper working through a broker and your freight is damaged, your Carmack claim must be directed at the carrier, not the broker. This means you need to know who the actual motor carrier was (identified by MC number on the BOL), not just which broker arranged the load. If your broker handled carrier selection and you don’t know the carrier’s identity, that’s the first thing to establish before you can file a valid Carmack claim.
| Yes. While the Carmack Amendment establishes carrier liability for “actual loss or injury,” carriers can limit the amount of that liability through released rates and declared value provisions in their tariffs and contracts. If a shipper accepts a released rate, a lower freight rate in exchange for a lower liability cap, the carrier’s maximum exposure is limited to the declared value, even if the actual loss exceeds it. Understanding the difference between full value and released value is essential before you ship. |
Many LTL carriers include released value provisions in their tariffs that cap liability at a specific dollar amount per pound (commonly $10-$25 per pound). A 500-pound shipment worth $50,000 might have a carrier liability cap of $5,000 to $12,500 under a released rate, a fraction of the actual value. To recover the full value, the shipper must declare the higher value on the BOL before shipment and pay the corresponding higher freight rate. For a detailed explanation of how declared value and released value work, see knowing your worth: declared value and released value in freight claims.
The practical takeaway: always check your carrier’s tariff for liability limitations before you ship. If your freight’s value exceeds the released rate cap, declare the full value on the BOL and pay the excess valuation charge. The additional cost is almost always a fraction of the difference between the released value and the actual value, and it’s far cheaper than absorbing an unrecoverable loss.
| When a carrier denies your claim or underpays it, citing the Carmack Amendment in your rebuttal or escalation letter demonstrates legal knowledge and signals that you understand your rights. Reference the statute by its full citation (49 U.S.C. § 14706), state the three elements of your prima facie case, and address whatever exception the carrier invoked in its denial with specific counter-evidence. |
Here is a framework for structuring a Carmack-grounded claim rebuttal:
State that you are making a claim pursuant to 49 U.S.C. § 14706 (the Carmack Amendment). Identify the shipment by BOL number, carrier name, origin, destination, and delivery date. State that the freight was tendered to the carrier in good condition (referencing the clean BOL at origin), that the freight arrived damaged or was lost (referencing the delivery receipt with exception notes or the confirmed non-delivery), and that the damages total a specific dollar amount (referencing the commercial invoice).
If the carrier cited one of the five exceptions, address it directly. For example, if the carrier claimed “act of the shipper” due to inadequate packaging, your rebuttal should include origin photographs showing proper packaging, packaging test certifications, and the fact that the carrier accepted the freight at pickup without noting any packaging exceptions on the BOL. If the carrier cited “inherent vice” for spoiled perishables, present your temperature data logger evidence showing the reefer unit deviated from the specified range. The more specific your counter-evidence, the stronger your position. For more on why claims get denied and how to prevent it, see why freight claims get denied.
Restate your specific dollar demand. Note that under 49 CFR § 370.9, the carrier was required to provide a disposition within 120 days of receiving the original claim. Reference your right to file a civil action under 49 U.S.C. § 14706(e)(1) if the claim is not resolved. You do not need to explicitly threaten litigation, but the citation itself signals that you understand the enforcement mechanism available to you.
Industry surveys indicate that approximately 40% of escalated freight claims are ultimately resolved in the shipper’s favor (FreightAmigo, 2026). Citing the Carmack Amendment by name and section, rather than simply requesting payment, puts your rebuttal in the category of informed, legally grounded communications that carriers take more seriously.
The Carmack Amendment was written to protect shippers, but it only works if you know how to use it. That means understanding your three-part burden of proof, knowing the five exceptions carriers will invoke, documenting your freight to counter those exceptions before they’re raised, and filing within the applicable deadlines.
FreightClaims.com’s platform automates Carmack-compliant claim filing from end to end: AI-powered document extraction, automated deadline tracking across every carrier in your network, centralized communication with a full audit trail, and template libraries that generate carrier-specific claim forms pre-populated with the right statutory citations. Whether you file claims yourself or hand them off to our managed service team, every claim is built on the legal foundation that gives you the strongest path to recovery.
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The Carmack Amendment (49 U.S.C. § 14706) is a federal law that makes interstate motor carriers liable for loss, damage, or delay to freight in their possession. Unlike standard negligence law, the shipper does not need to prove the carrier was at fault, only that the freight was in good condition when handed to the carrier, arrived damaged, and that the damages have a specific dollar value. The carrier is then presumed liable unless it can prove one of five recognized exceptions.
No. The Carmack Amendment applies to motor carriers and freight forwarders, not to brokers who solely arrange transportation. However, if a broker assumes carrier-like responsibilities, such as issuing a Bill of Lading in its own name or taking physical possession of freight—a court may treat the broker as a carrier for Carmack liability purposes. Shippers should direct their Carmack claims at the motor carrier identified on the BOL, not the broker.
Carriers can avoid Carmack liability by proving the damage was caused by: (1) an act of God (extraordinary natural disaster), (2) an act of the shipper (improper packaging or labeling), (3) an act of a public enemy (war or terrorism, not ordinary theft), (4) inherent vice (natural spoilage or instability of the product), or (5) an act of public authority (government seizure or quarantine). In practice, “act of the shipper” and “inherent vice” are invoked far more often than the other three.
Yes. Carriers can limit their liability through released rates in their tariffs, which cap the maximum payout at a specific dollar amount per pound. If the shipper accepts a released rate without declaring a higher value on the Bill of Lading, the carrier’s maximum exposure is the released value, even if the actual loss far exceeds it. To ensure full value recovery, declare the full cargo value on the BOL before shipment and pay any applicable excess valuation charge.
The Carmack Amendment establishes that carriers cannot require claims to be filed within 9 months of delivery, and cannot require lawsuits to be filed within 2 years of a written denial. These are minimum protections—the actual deadline in your carrier’s tariff or contract may be longer, but never shorter. Any provision requiring a shorter period is unenforceable under federal law.
Generally, no. The Carmack Amendment governs interstate transportation, shipments crossing state lines. Purely intrastate shipments are typically governed by state law, which may provide different liability rules, filing deadlines, and burden-of-proof standards. However, if an intrastate segment is part of a larger interstate shipment under a through bill of lading, the Carmack Amendment may apply to the entire journey.
Reference the statute by its full citation: 49 U.S.C. § 14706. In your claim letter or rebuttal, state that you are making a claim pursuant to this section, establish your three-part prima facie case (good condition at origin, damaged at delivery, specific dollar amount), and address any exception the carrier has invoked with specific counter-evidence. Referencing the applicable FMCSA regulations (49 CFR § 370.5 for acknowledgment timelines and § 370.9 for disposition timelines) demonstrates that you understand the carrier’s regulatory obligations.
