Demurrage and detention are the import cost nobody budgets and everybody eventually pays, unless their clearance runs on discipline. These charges compound daily, arrive after the fact, and are almost entirely avoidable. Here is how they work at Karachi and how professional importers keep them at zero.
Two different clocks
Demurrage is the terminal's charge for a container occupying port ground beyond the free period; detention is the shipping line's charge for keeping its container beyond its free days, including after the box has left the port but not yet been returned empty. Both start from vessel discharge, run per container per day, and escalate in slabs, the longer it sits, the steeper the daily rate.
Free periods are short, typically a handful of days at the terminal and per the line's tariff for the equipment, and consignments that miss them can accumulate charges that rival the freight itself within a couple of weeks. Reefer boxes add plug charges on top.
Why containers actually get stuck
Post-mortems on stuck containers repeat the same causes:
- Documents not ready at arrival, the GD could not be filed early because the file was incomplete.
- Regulatory approvals started late, a Release Order, quarantine release or CoC that should have been in motion pre-arrival.
- Value or classification disputes, entries that invited reassessment and then waited in review.
- Payment delays, duty funds not arranged for the assessed amount.
- Logistics gaps, no transport booked at release, or empty return not planned within detention free days.
The pre-arrival playbook
The cure is sequencing everything before the ship arrives. Documents verified while the goods are on the water; regulatory approvals filed as early as the system allows; the GD ready for filing on manifest; duty estimated and funds arranged; transport and, where needed, reefer plugs and specialised equipment booked against the ETA; the empty-return plan agreed with the transporter.
This is not heroics, it is process, and it is what a competent clearing agent runs as a matter of routine. Our standing target on routine, fully-documented cargo is release within the free days, making demurrage an exception with a cause, not a cost of doing business.
If cargo is already stuck
Move on two tracks at once: resolve the blocking issue (document, dispute, approval) with same-day responses, and manage the meter, where disputes will take time, options like security-based release can free the goods while the argument continues, and lines will sometimes negotiate detention on documented delays that were not the consignee's fault.
Bring us a stuck consignment and the first deliverable is a same-day diagnosis: what is blocking, who owns the fix, what it costs per day to wait, and the fastest lawful route out.
Want this handled for you?
ASC has cleared and moved cargo through Pakistan's ports since 1988. Send your shipment details and we'll reply with a clear plan and quote, usually within one business day.