In international trade and shipping, importers may fail to load or unload their cargo within a specific time frame.
Therefore, port authorities impose demurrage charges to compensate carriers and terminal operators for the use of their space and equipment.
To help you avoid this cost, we will explore all the fundamental aspects about demurrage – from definition, costs, calculations involved and possible ways to avoid these charges.
What is Demurrage in Shipping?

Demurrage in shipping is a penalty or specific fee that is paid when cargo remains at a port or terminal for longer than the agreed timeframe.
This fee is often imposed to encourage importers and exporters to load and unload their goods and return containers so as to keep everything flowing.
How Demurrage Works
Demurrage is basically a penalty for not moving cargo within the agreed timeframe. The longer the delay, the higher the cost.
· Free Time
When your container arrives at the port or terminal, shipping lines will offer you a limited duration or a number of days to store your containers at the port.
The duration given varies with different shipping lines; however, it can go up to 14 days or more upon request.
· Start of Demurrage
If the container is not loaded or unloaded within the free time frame given, demurrage charges begin. The charges are calculated per container daily, and the longer the delay, the charges increase.
· Demurrage Import and Export Illustration
For instance, the shipping lines give you a free period of 3 days for you to unload your cargo during importing, and you delay for 2 days, you are charged demurrage fees for the 2 days.
In exporting, you are given a container to load your goods then you fail to return it to the port before the free time given, you will have to pay extra charges.
· Daily Charges
The carriers’ and terminal operators will calculate daily charges for as long as your container or goods will be at the particular port beyond the free time frame given.
This charges often differ depending on the port authorities and its regulations.
· Payment
The parties which are responsible to pay the demurrage fees are the importer or the exporter. This is because, they are the ones who can control their cargo and speed in documentation or transportation.

Types of Demurrage in Shipping
There are two major types of demurrage:
- Container demurrage is the fees paid when a full container remains at the port or terminal beyond the free time frame given by a shipping line.
- Vessel demurrage is often a compensation to the shipowner for delay at the loading or unloading point within the free time frame given by a shipping line.
In container demurrage:
- It applies to thecontainer itself at the port/terminal
- If the container is not picked up, moved out, or returned within the free time frame provided
- The charge is usually per container, per day, and increases the longer the delay continues.
- It is done to ensure containers are moved quickly and space is available.
In vessel demurrage:
- Applies if loading or unloading takes longer than the time frame given
- When the shipowner loses time and revenue while the vessel is stuck in port
- To compensate for the opportunity cost, since the vessel could have been employed elsewhere.
- To encourages cargo owners and port operators to work efficiently.

Causes of Demurrage
Major causes of demurrage include:
- When an importer or exporter submits Inaccurate or incomplete shipping documents
- If there is a late submission of paperwork from the importer or exporter
- Overcrowded ports lead to longer hours during the processing of documents
- Inadequate specialized equipment for handling cargo or labor shortage
- Hazardous or perishable goods that need inspection by health or agricultural authorities.
- Sudden government regulations, policy changes or political unrest.
How to Calculate Demurrage Charges and Costs
The calculations of demurrage charges vary with the carriers and ports. Demurrage are set per container depending on the container type and size and port location and per day.
Identify the number of free days given by the shipping line. Then count the number of days your container has stayed at the port beyond the free time.
Next, check the daily tariffs of the shipping line and multiply them by the number of excess days your container has spent at the port or terminal.
If there are any other extra charges like detention fees and storage fees, you can add.

Tips to Avoid Demurrage Charges in Shipping
There are many ways to avoid demurrage charges when shipping:
- Prepare your documentation in advance and double-check it before submitting it
- Use a reliable customs broker to avoid errors or any delays
- Start customs clearance before your cargo arrives by using a pre-arrival processing system
- Stay alert by using port tracking systems to know when containers are discharged
- Use one central contact to manage updates and avoid miscommunication
- Secure approvals in advance to prevent containers being detained at the port
Why Trust Bansar for your Shipping & Logistics
With years of experience in the shipping and logistics industry, Bansar understands every operation and efficient ways to avoid delays. First, we negotiate with shipping companies and plan our operations ahead of time. This way, we ensure fast loading and offloading to prevent changes of incurring any additional costs.
Therefore, if you are looking for a China freight forwarder, to help you reduce shipping costs from China, then Bansar is your trusted partner – talk to our sales team now.
Conclusion
Understanding the concept for demurrage in shipping will help you avoid extra cost when importing or exporting. With this knowledge, you will be able to plan ahead to ensure smooth shipping at affordable rates.
FAQs
Who is responsible for Demurrage Charges?
It depends on the circumstance. It can be importer, the exporter or the person who has hired a vessel.
Are Demurrage charges the same as Storage Fees?
No, they are not the same.
Storage fees apply when occupying space at the port or warehouse beyond free time frame given.
What is the Difference between Detention and Demurrage in Shipping?
Demurrage in shipping is when a shipping line applies charges to a full container that stays inside the port or terminal beyond the free time frame given.
Detention in shipping is when a shipping line applies charges on a container, whether full or empty, that is kept outside the port or terminal beyond the free time frame given.
What is the difference between Laytime and Demurrage in Shipping Industry?
Laytime is a window period or free time granted either in days or hours by a shipping line to an importer or exporter to handle cargo operations without an extra cost.
Demurrage in shipping is charges applied by a shipping line when a full cargo load container stays inside a port beyond the free time frame given.
What is 14 days Free Detention at the Destination?
14 days of free detention at the destination is the free time window given by a shipping company for your container outside the port or terminal, longer than the free time window.
Why is Demurrage Charged?
Demurrage is charged to encourage cargo owners to move their containers out quickly.

