Demurrage and detention are time-related container charges whose definitions and calculation vary by carrier and tariff. Confirm the applicable free time and start and stop events in writing.
Read the tariff, not just the labels
Providers often use demurrage for terminal-related container time and detention for time with equipment outside the terminal. Combined arrangements also exist. Ask the carrier how the terms apply to your booking rather than relying on a generic definition. Identify whether storage or other terminal charges are separate. Obtain the relevant tariff alongside the quotation.
Map the destination sequence
Arrival, document release, customs clearance, transport appointment, unloading and empty return all consume time. Identify which party controls each step and whether the recipient can unload when the cargo arrives. A delivery address without equipment or access can turn a reasonable transport plan into an extended container use period. Agree a return location and responsibility before dispatch.
Use free time as an operating constraint
Ask whether free time counts calendar or working days and how weekends and holidays are treated. Clarify whether different containers have different allowances. Build a schedule that includes the final equipment return, not only goods delivery. If delays arise, document events promptly and ask about available options before charges accumulate. Review each invoice against the confirmed terms.
Your shipment checklist
- Request definitions and tariff basis.
- Confirm free time and counting rules.
- Plan unloading and empty return.
- Separate storage from equipment charges.
Can I assume the same free time on every shipment?
No. Free time depends on the carrier, equipment, location and agreed booking terms. Reconfirm it for each quotation.
This guide supports shipment planning. The accepted quote, carrier requirements and applicable authority rules determine your shipment’s final arrangements.
