FAQ
About the calculation.
General information only; the carrier’s tariff and your contract govern.
What is the difference between container demurrage and detention?
Demurrage is charged for the time a container stays inside the port or terminal after the free time has expired. Detention is charged for the time the container is kept outside the terminal, for example at the consignee’s premises, beyond the free time before the empty is returned. Some carriers combine both into a single D&D period.
How are tiered D&D rates calculated?
After the free days, the first band of chargeable days is charged at the tier 1 daily rate, the next band at the higher tier 2 rate, and any remaining days at the tier 3 rate. This calculator applies the tiers in that order and multiplies the result by the number of containers.
Does the first day count?
Most carriers count the day the clock starts and the day it stops as full days, which is the default here. Check the tariff: some count from the day after discharge.
Can D&D charges be disputed?
Yes. Common grounds include charges for delays caused by the carrier or terminal, free time that was agreed but not applied, an incorrect tariff, and charges that are disproportionate. In the United States, the FMC’s billing rules also set requirements for D&D invoices.
Free case review
A D&D invoice to recover or dispute?
Send us the tariff, the invoice and the container movement records for a free review.