Detention Fees vs. Demurrage Charges

Key Takeaways

• Detention fees are charged when a carrier's trailer is held at your dock beyond the agreed free time.
• Demurrage charges apply when a container sits at a port or terminal past the free pickup period.
• Both fees escalate on a per diem basis and can run into thousands of dollars per incident.
• Digital dock scheduling eliminates the delays and coordination gaps that trigger both charges.

Detention fees and demurrage charges are two of the most costly terms in logistics. They are additional fees incurred for holding containers or trailers beyond a specified period, and they compound fast. According to an interim report of the Federal Maritime Commission, demurrage and detention charges rose sharply between 2014 and 2017, with increases as high as 90% in a single year. Dock scheduling software is one of the most effective tools for eliminating the delays that trigger both.

Defining Detention Fees and Demurrage Charges

What Are Detention Fees?

Detention fees refer to a penalty paid for holding a trailer beyond the period specified in the agreement contract. Detention fees are paid on a per diem basis. This means you pay a specified rate for every extra hour the trailer spends beyond the pre-agreed grace period. In some instances, the rates could be tiered, meaning the charge increases the longer the trailer stays with you beyond the agreed-upon appointment time.

What Are Demurrage Charges?

Demurrage charges are penalties paid for leaving a container at the port or terminal beyond the agreed free time. It applies before the container is picked up for delivery. Like detention fees, it is also paid on a per diem basis, and the rate can be incremental to discourage longer delays.

Key Differences Between Detention vs Demurrage

Detention and demurrage are closely related logistics fees. However, each only applies in different situations depending on the container's location. Both terms are tied to a pre-agreed grace period during which a container or trailer can be held without penalty, either in a yard or at a port.

• Demurrage applies while the container is still at the port or terminal. If the cargo isn't picked up before the free time expires, storage fees begin to accrue.
• Detention is the fee charged by a carrier to a warehouse for their trailer being held in the yard for too long. Unloading may be taking too long or may not have begun at all.

Think of it this way: demurrage is like paying for overstaying in a parking garage, while detention is like getting fined for returning a rented trailer late.

It's important to note that demurrage charges and detention fees are not mutually exclusive. Without proper dock scheduling and management, you stand the risk of incurring both at different stages of the clearing and offloading process.

What Is the Financial Impact of Detention and Demurrage?

Supply chain workers are always looking to avoid detention and demurrage charges because their impact can be far-reaching.

Financial Consequences

The most obvious impact of detention and demurrage is the financial consequence. Depending on the specified per diem rate and the number of days overdue, the cost could easily run into thousands of dollars. For instance, ports in Long Beach and Los Angeles charge as much as $173 and $197, respectively, for detention and demurrage on 20' dry containers. Calculate this rate over two weeks, and the cost incurred runs into thousands. Detention fees can also be steep, with penalties ranging from $50 to $100 per hour for truckload, and are often billed in 15-minute increments.

Operational Disruptions

Delays almost always go hand in hand with demurrage and detention. With delays come operational disruptions in the supply chain. Containers that sit longer than expected at the terminal or at the warehouse mean other shipments are held up. For demurrage, it means less space for new cargo to be offloaded at the port. For detention, it means carriers can't send their drivers to their next appointments and warehouses have backups in their yards.

Long-Term Effects on Business Relationships

Demurrage charges and detention fees are designed to serve as financial deterrents to ensure the productive use of shipping assets like containers and terminal space. When one party consistently incurs these charges, it can strain the working relationship. Logistics partners might become hesitant to work with clients who frequently face these issues, as idling containers can complicate their own operations and cash flow.

How Does Dock Scheduling Reduce Fees?

Opendock's online scheduling portal helps prevent the delays that lead to demurrage and detention fees in several key ways.

Reducing Detention Fees

• Carrier-Led Scheduling: Carriers can book their own dock appointments online, which eliminates confusion and helps them arrive exactly when they're expected, reducing idle time spent waiting for a dock to open up.
• Structured Appointment Windows: Facilities can move away from inefficient first-come, first-served systems. Scheduled time slots reduce dock congestion, improve truck turnaround times, and lower the risk of detention penalties.
• Labor Alignment: Knowing exactly when trucks are arriving allows warehouse managers to allocate staff and equipment more effectively, ensuring faster loading and unloading with minimal downtime.

Reducing Demurrage Charges

• Advance Visibility into Dock Capacity: Opendock's centralized scheduling system gives carriers and warehouse teams visibility into available appointment windows, ensuring containers can be picked up from the port and delivered without delay.
• Faster Scheduling Turnaround: Instead of spending hours coordinating over email or phone, appointments are booked online, accelerating the movement of goods from port to warehouse.

Results from Facilities Using Dock Scheduling

Using Opendock, a beverage packer solved its dock congestion and high detention fees problem. Opendock's carrier-led scheduling helped the company save $36,000 annually in detention fees. The company also saved 600 scheduling labor hours annually across all facilities and had 90% of appointments self-scheduled by carriers.

A 3PL provider tackled unplanned truck arrivals, long wait times, and rising detention costs by switching to Opendock. Through carrier-led scheduling, the company saved $144,000 annually in detention fees, freed up 12,000 scheduling labor hours across all facilities, and now has 70% of appointments self-scheduled by carriers.

Ralph Moyle Inc. replaced manual scheduling for 37 dock doors with Opendock, saving significant customer service labor hours. The platform's reporting tools enhanced visibility into carrier punctuality and detention windows, improving accountability and speeding up check-ins through a clear and structured handoff process.

Detention fees and demurrage charges are large cost centers for many supply chains. With dock scheduling tools like Opendock, facilities can eliminate the coordination gaps that let these fees accumulate.

Frequently Asked Questions 

What Is the Difference Between Detention Fees and Demurrage Charges?

Detention fees are charged by a carrier when their trailer is held at a warehouse dock beyond the agreed free time. Demurrage charges apply when a container sits at a port or terminal past the free pickup period before delivery. Both are billed on a per diem basis and can escalate quickly without structured scheduling in place.

How Much Do Detention and Demurrage Fees Cost?

Port detention and demurrage can reach $173 to $197 per container per day at major US ports like Long Beach and Los Angeles. Truckload detention fees typically range from $50 to $100 per hour, often billed in 15-minute increments. Costs compound quickly across multiple incidents and facilities without proactive scheduling controls.

How Does Dock Scheduling Software Reduce Detention and Demurrage Charges?

Dock scheduling software reduces both fees by giving carriers self-scheduling access, creating structured appointment windows, and providing warehouse teams with advance visibility into dock capacity. Facilities that adopt structured scheduling eliminate the idle time and coordination gaps that trigger detention and demurrage charges.