Calculator

Demurrage & Detention Calculator

Calculate exactly what you owe - and understand how to avoid it next time

Number of containers

Demurrage

Container sitting at port / terminal

Free days included - charges start day 6

Detention

Carrier equipment off-port

Free days included - charges start day 6

Enter actual days above to calculate charges

Key Concepts

Demurrage, Detention & Storage - what is the difference?

These three charges are often confused. Each starts at a different point in the container journey and is billed by a different party.

DEM

Charged by

Clock starts

Clock stops

The key distinction: demurrage = container at port. Detention = carrier box off-port. Storage = cargo at CFS.

How It Works

Where demurrage and detention clocks start and stop

Understanding the exact moment each clock starts is essential to avoiding unexpected charges.

Free time - no charge
Charges accumulating
Clock handover point
Common Mistakes

Why shippers get hit with unexpected charges

Most demurrage and detention bills are avoidable. These are the six most common reasons shippers get caught out.

FAQ

Demurrage & Detention - frequently asked questions

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