The Carmack Amendment Explained: What Every Claims Team Needs to Know

The Carmack Amendment (49 U.S.C. § 14706) is the federal law that governs carrier liability for freight loss and damage in interstate shipping. It sets the 9-month filing deadline, requires carriers to acknowledge claims within 30 days and resolve them within 120, and preempts all state tort claims — meaning your team's legal rights in a freight dispute are entirely determined by whether you followed the Carmack process correctly.

TL;DR: Carmack Amendment Deadlines at a Glance

What Is the Carmack Amendment?

The Carmack Amendment was enacted in 1906 as part of the Hepburn Act and codified at 49 U.S.C. § 14706. It establishes a uniform national liability standard for interstate freight carriers — motor carriers (trucking), rail carriers, and freight forwarders that issue bills of lading for interstate transportation.

The core rule is straightforward: a carrier is liable for the full actual loss, damage, or injury to freight it accepts for transport, unless the loss was caused by:

1. An act of God (flood, earthquake, natural disaster)
2. The public enemy (war, terrorism)
3. The act of the shipper (improper packaging, misdeclaration of freight)
4. Public authority (government seizure)
5. Inherent vice of the goods (fruit that rots, animals that die of natural causes)

Outside these five exceptions, the carrier is strictly liable. The shipper does not need to prove negligence — only that the freight arrived in worse condition than it was tendered, or did not arrive at all.

Why Carmack Preempts State Law

The Carmack Amendment's most important practical effect is preemption: it entirely displaces state contract and tort law for claims of cargo loss and damage. A shipper cannot sue a carrier for negligence under state law. A shipper cannot assert state-law warranty claims or consumer protection claims for freight damage. The Carmack process — written claim, written denial, federal lawsuit — is the only avenue.

This matters because shippers sometimes try to avoid Carmack's limitations by reframing a freight damage claim as a breach of contract or negligence claim in state court. Federal courts consistently dismiss those attempts. If your freight was damaged in interstate transit, your claim is a Carmack claim, period.

What Are the Carmack Filing Deadlines?

The 9-Month Claim Filing Window

A shipper must file a formal written claim with the carrier within 9 months of delivery (or within 9 months of the expected delivery date for lost shipments). This deadline is a hard statutory rule — courts have rejected claims filed at 9 months and 1 day with no equitable exceptions.

The carrier may contractually shorten this window in the contract of carriage, but federal regulations cap the minimum at 9 months — no carrier can contractually require a shorter window than that. In practice, most LTL carrier tariffs use the statutory 9-month default.

A compliant claim must:

• Be in writing (email is acceptable; verbal notice is not)
• Identify the shipment (PRO number, BOL number, or pickup date and origin/destination)
• Assert carrier liability — state that the carrier is responsible for the loss
• State a specific or determinable dollar amount for the loss

The amount does not have to be exact if exact figures aren't available at filing time, but the claim must identify a method for determining it (e.g., "invoice value of $4,200 plus repair costs to be quantified upon completion").

The 30-Day Acknowledgment Requirement

Under 49 C.F.R. § 370.9, after receiving a written claim, a carrier must acknowledge receipt within 30 days. This acknowledgment must be in writing and must include the carrier's claim file number (if assigned). A carrier that does not acknowledge within 30 days is in violation of federal regulations — document this failure, as it becomes relevant if the dispute escalates.

The 120-Day Resolution Obligation

Within 120 days of receiving the claim, the carrier must:

• Pay the claim, in full or in part
• Decline the claim in writing, stating the reason
• Make a settlement offer and invite the shipper to respond

Carriers that do not resolve within 120 days are in violation of 49 C.F.R. § 370.9. This violation does not automatically entitle the shipper to judgment, but it is meaningful leverage in subsequent litigation — it shows the carrier acted in bad faith or was negligent in administering the claim.

The 2-Year Lawsuit Window

If the carrier denies the claim or fails to respond, the shipper has 2 years from the date of the written denial to file a federal lawsuit. This window can also be contractually shortened in the bill of lading, but the floor is 2 years — carriers cannot require shorter.

Many claims teams miss this deadline because they treat a denial as a dead end rather than the start of a litigation clock. The denial letter should immediately trigger a calendar reminder at 18 months (early warning) and 23 months (final warning) for any dispute large enough to consider litigation.

How Does Carmack Handle Carrier Liability Limits?

Released Value Rates

The Carmack Amendment allows carriers to offer a released value rate — a reduced shipping rate in exchange for limiting their liability. The most common form is a cents-per-pound cap:

• A carrier might offer a rate of $0.10/lb for an LTL shipment with a maximum liability of $500 per shipment
• If the shipper accepts this rate, the carrier's liability is capped at the released value — even if the actual loss is $20,000

For a released value limitation to be enforceable, the carrier must offer the shipper a genuine choice between two options:

1. Shipping at the standard rate with full Carmack liability
2. Shipping at a reduced rate with the limited liability

If the carrier buried the released value in fine print without giving the shipper a real opportunity to choose, courts frequently hold the limitation unenforceable and apply full Carmack liability.

Declared Value vs. Cargo Insurance

Released value limitations are one reason freight claims teams carry cargo insurance on high-value shipments rather than relying solely on Carmack. Insurance covers the full commercial invoice value regardless of carrier liability caps. For shipments worth more than the carrier's liability ceiling, cargo insurance is the correct tool — Carmack is the floor, not the ceiling.

What Does Carmack Not Cover?

The Carmack Amendment governs interstate freight — shipments that cross state lines. Intrastate shipments (within a single state) are governed by state law, which varies. For California, Texas, and several other states with their own carrier liability frameworks, the Carmack framework does not apply to intrastate moves.

Carmack also does not apply to:

• Air freight — governed by the Air Commerce Act and carrier tariffs
• Ocean cargo — governed by COGSA (Carriage of Goods by Sea Act) and the Hague-Visby Rules
• International trucking — governed by CMR (Convention on the Contract for the International Carriage of Goods by Road) for cross-border moves

A freight claim on a container from Shanghai to Chicago splits into two legal frameworks: COGSA governs the ocean leg, Carmack governs the domestic trucking leg.

How Carmack Deadlines Interact With Your Claims Automation

For operations teams managing claims at volume, Carmack's fixed deadlines are both a risk and an opportunity. The risk: missing a filing window is unrecoverable. The opportunity: because the rules are deterministic, they can be automated completely.

A properly configured SOP-driven claims agent handles every Carmack deadline without human memory:

• 9-month filing window: The system detects the delivery event, starts the clock, and ensures the claim is drafted and submitted before day 270 — with alerts at day 200 and day 240 as buffers
• 30-day acknowledgment check: The agent monitors for carrier acknowledgment and flags any non-response by day 28
• 120-day resolution check: Scheduled check-ins at day 90 and day 110 surface stalled claims before the carrier's regulatory deadline passes
• 2-year litigation window: The denial date triggers a litigation-review task at month 18

The OS&D claims automation workflow details exactly how to wire these deadline checks into a carrier-agnostic automation system, including the specific TMS and helpdesk integrations that feed the trigger events.

Practical Carmack Compliance Checklist for Claims Teams

Use this checklist to verify your team's process satisfies Carmack requirements:

At delivery:

• Consignee notates visible damage on the delivery receipt (POD) before the driver leaves
• Photographs are taken of damaged freight at delivery
• A consignee copy of the POD is retained

Within 5 business days of delivery (for concealed damage):

• Concealed damage is reported to the carrier in writing
• Photos of packaging and contents are documented
• Original packaging is preserved for carrier inspection

Within 9 months of delivery:

• A formal written claim is filed with the carrier
• The claim identifies the shipment (PRO/BOL)
• The claim asserts carrier liability
• The claim states a dollar amount or methodology for calculating it
• Filing is confirmed in writing (email with read receipt, or certified mail)

After filing:

• Carrier acknowledgment received within 30 days (follow up if not)
• Claim resolved within 120 days (escalate if not)
• If denied, litigation window tracked (2 years from denial date)

How Carrier Size Affects Carmack Enforcement

The Carmack framework applies equally to all interstate carriers, but enforcement reality differs significantly by carrier size:

Large LTL carriers (Old Dominion, Saia, XPO, Estes, R+L Carriers) typically have formal claims departments that process claims within 90–120 days and communicate proactively. Disputes with large LTL carriers usually resolve within the regulatory window without escalation.

Small regional carriers and owner-operators frequently lack dedicated claims staff, miss acknowledgment and resolution deadlines, and require more aggressive follow-up. The same federal rules apply, but enforcement requires more manual effort.

Parcel carriers (FedEx, UPS) operate largely on their own internal processes and service guides, which contractually compress some of the Carmack window provisions. Both carriers offer online claims portals that are faster than the federal process in practice, though for disputes above $1,000 the Carmack framework becomes the fallback when internal processes fail.

Internal Linking: Where Carmack Fits in Your Claims Stack

The Carmack Amendment is the legal foundation, but winning freight claims at volume requires a complete operational stack. Three resources that build on what you've learned here:

• The 2026 State of Freight Claims Report — industry benchmarks showing how denial rates and recovery times compare across carrier types, claim sizes, and filing methods
• OS&D Claims Automation End-to-End — how to operationalize the Carmack checklist above into an automated claims workflow
• Salesforce Service Cloud AI Agent for Case Operations — how cross-platform case management captures Carmack deadlines directly from TMS event feeds into Salesforce Cases

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Mustafa Bayramoglu is the founder of CorePiper (YC W19), a cross-platform AI case operations platform for logistics and enterprise teams. CorePiper encodes carrier-specific Carmack deadlines as SOP rules executed automatically across Salesforce, Zendesk, and Jira — so no filing window gets missed at volume.