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What Is Demurrage? A Shipper's Guide to Container Storage Fees

By ANKPOST Operations Team · 2026-01-15

What is demurrage?

Demurrage is a per-diem fee charged by ocean carriers when a container is not picked up from the marine terminal within the allotted free time, typically 3-5 calendar days after vessel discharge — it is distinct from per diem (fees for retaining carrier-owned equipment) and detention (fees for holding equipment outside the terminal after gate-out). Independent dispatch data indicates that containers exceeding free time at LA/Long Beach terminals during normal operations are picked up a median of 1-2 days after the Last Free Day, while on-ground drayage logs show this gap extends to 3-5+ days during periods of terminal congestion, directly increasing total demurrage exposure per container.

In this article

Cost structure / standard tiers

Demurrage is calculated on a sliding scale, with the daily rate increasing the longer the container remains in the terminal.

Days Past Free Time Typical Daily Rate
Days 1-4 $150-$200/day
Day 5-7 $300-$400/day
Beyond day 7 (carrier/terminal-dependent) Further escalation possible, varies by contract

Rates vary by carrier, port, and the specific service contract in place, and most carriers apply the escalating structure automatically with no grace period once free time expires.

Risk mitigation / operational guidance

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