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Container Free Time, Detention and Demurrage Explained

Why containers start costing money after arrival, the difference between detention and demurrage, and how to avoid the charges.

Ferry Global Logistics Team · Updated · 2 min read

Key takeaways

  • Free time is the period you can keep a container without extra charges.
  • Demurrage is generally charged while a full container stays in the port beyond free time.
  • Detention is generally charged while the container is outside the port and not yet returned.
  • Early documents, fast clearance and planned de-stuffing are the best protection.

The terms

Shipping lines allow a limited number of free days for each container. After that, charges apply. Exact definitions and free days vary by shipping line and contract, so always check your terms.

ChargeUsually applies whenCharged by
Port storageCargo remains in the terminal beyond its free periodTerminal
DemurrageFull container stays at the port beyond free timeShipping line
DetentionContainer is kept outside the port beyond free timeShipping line

How to avoid the charges

Charges build daily, so a few days saved at each step adds up quickly on multi-container shipments.

  • Send documents to your clearing agent before the vessel arrives.
  • Confirm any import permits in advance.
  • Book trucking for the day of release.
  • Plan de-stuffing labour so the empty container can be returned quickly.

Frequently asked questions

Can free time be extended?

Sometimes. Extended free time can be negotiated with the shipping line at booking, usually at a cost. Ask before the cargo ships.

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