Demurrage is one of the most common unexpected costs in sea freight, and one of the easiest to avoid with the right planning. If your cargo sits at the port longer than the shipping line allows, the charges add up fast.
Demurrage is a fee charged by the shipping line when a container remains at the port of discharge beyond the agreed free time. Free time is the window, typically three to seven days, during which you can collect or clear your container without incurring additional charges.
Once the free time expires, the shipping line begins charging demurrage for every calendar day the container remains at the port, unpicked up. Rates vary by carrier, container size, and trade lane, but they can escalate quickly if customs clearance is delayed or collection is not arranged in time.
Demurrage applies at the destination port. It is charged to the consignee, which is typically the importer or their freight forwarder acting on their behalf.
For example: a company imports machine components by FCL. The container arrives at the destination port on a Monday. The shipping line grants five days of free time, running from Tuesday to Saturday. The company needs to clear customs before the container can be collected, but a missing document delays the process. The container is not collected until the following Wednesday. That is four days beyond the free time period. At an illustrative demurrage rate of USD 80 per day, the company owes USD 320 in demurrage charges, billed by the shipping line.
Demurrage is charged per container per calendar day, including weekends and public holidays. The rate often increases in tiers the longer the container remains at the port. For example:
Tier structures and rates are set by the individual shipping line and vary by trade lane and container size. A 40-foot container will typically attract a higher daily rate than a 20-foot container.
The key point is that demurrage charges do not pause for weekends, port closures, or delays caused by third parties. Once free time expires, the clock runs continuously until the container leaves the port.
Demurrage is predictable and largely avoidable with proper planning:
Demurrage and detention are related costs that are often confused. They apply to different parts of the journey and are charged under different conditions.
| Demurrage | Detention | |
|---|---|---|
| What it covers | Container sitting at the port after free time | Container kept outside the port after free time |
| Where it applies | At the port of discharge | At your warehouse or premises |
| Who charges it | The shipping line | The shipping line |
| Who pays | The consignee (importer) | The consignee (importer) |
| How to avoid it | Clear customs and arrange collection promptly | Return the empty container on time |
Both charges are billed by the shipping line and can appear on the same invoice. Some carriers bundle them under a combined demurrage and detention tariff, while others invoice them separately.
Demurrage charges add up quickly, and the free-time rules differ from one carrier and terminal to the next. Avoiding them usually comes down to preparing your documentation and arranging collection before the clock starts, not after it has run out.
At FORW, every client works with one dedicated contact who knows your shipments, your suppliers, and your priorities. There are no call centres and no handoffs between departments. Your contact handles air freight, sea freight, road freight, customs clearance, and more.
If you are looking for a freight forwarding partner based in Denmark, our team is ready to help you keep your containers moving and your demurrage costs down.
Understanding demurrage is straightforward. Avoiding it in practice requires coordination between customs clearance, port collection, and your internal operations, all running against a clock that does not pause for delays.
FORW manages sea freight shipments end to end. That includes monitoring arrival dates, preparing and submitting customs documentation in advance, and coordinating collection so your container moves out of the port within the free time window. With offices in Denmark, Sweden, and Norway, we work across Scandinavia and internationally.
With one dedicated contact handling your shipment from booking to delivery, there are fewer handoffs and fewer opportunities for the kind of miscommunication that leads to avoidable demurrage charges.
