Demurrage vs Detention: Check the Clock Before Disputing a Bill
In container shipping, demurrage commonly concerns equipment remaining within a terminal beyond agreed free time, while detention commonly concerns equipment retained outside it.
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What is the difference between demurrage and detention?
In container shipping, demurrage commonly concerns equipment remaining within a terminal beyond agreed free time, while detention commonly concerns equipment retained outside it. Actual definitions, combined charging arrangements and billing rules depend on the contract and jurisdiction. Check the applicable tariff and event dates before deciding whether a charge is correct or recoverable.
The label is only the starting point
Maersk's detention and demurrage terms recognise that charges may be separate or combined under the applicable arrangement. For U.S. trades, the Federal Maritime Commission's detention and demurrage resources provide the relevant regulatory starting point. Do not apply a rule from one jurisdiction to every international movement.
A cargo invoice, terminal storage charge and container-use charge can concern different services. Identify the issuer, contractual counterparty, container, charging period and underlying event. Two invoices with similar descriptions are not automatically duplicates, but they deserve reconciliation before payment or dispute.
Reconstruct the clock
| Event or document | Question to establish |
|---|---|
| Discharge and availability | When could collection actually be arranged? |
| Free-time agreement | What starts the clock and which days count? |
| Customs or carrier hold | Who imposed it and when was it removed? |
| Gate-out record | When did equipment leave the terminal? |
| Empty-return record | Where and when was return accepted? |
Save appointment attempts, terminal notices and written instructions if collection or return could not be completed. A dated record is more useful than a later general statement that the port was congested. Keep the original invoice and any corrected version so the disputed amount remains clear.
A fictional bill review
An importer receives a charge covering several days after the container became available. Its trucker says the nominated return depot would not accept empties. The importer should obtain the applicable terms, the depot's dated response, alternative-return instructions and actual gate records. Those facts can be put to the billing party without asserting that every day must be waived.
Do not allow a billing dispute to distract from deadlines. Identify the provider's dispute procedure and applicable legal requirements promptly. Paying, disputing or seeking an extension can have contractual implications that should be considered with the appropriate adviser.
Why a valid charge is not automatically an insured loss
Cargo insurance, forwarder liability and an importer's ordinary operating costs are separate matters. Extra charges can arise without physical cargo damage or a covered liability. If insurance may be relevant, submit the cause, timeline, invoice and wording question rather than describing the amount as automatically covered.
See the distinction between goods, liability and freight interests and cargo insurance information. Provide the actual transport and storage arrangements when requesting terms for future shipments.
Key takeaways
- Reconcile contract definitions with the actual custody timeline.
- Preserve unsuccessful collection and return attempts.
- Assess the bill and insurance response separately.
Frequently asked questions
What is the difference between demurrage and detention?
In container shipping, demurrage commonly concerns equipment remaining within a terminal beyond agreed free time, while detention commonly concerns equipment retained outside it. Actual definitions, combined charging arrangements and billing rules depend on the contract and jurisdiction. Check the applicable tariff and event dates before deciding whether a charge is correct or recoverable.
Sources & further reading
- Maersk's detention and demurrage terms
- Federal Maritime Commission's detention and demurrage resources
General information, not a coverage determination or offer. Actual cover is subject to policy wording, insurer terms, underwriting and applicable law.