What Does Demurrage Mean?
Demurrage is an additional fee that occurs as a result of the container exceeding the free usage period granted by the carrier, especially in maritime transportation. In import operations, failure to withdraw the container from the port on time, delay in unloading, or failure to return the empty container to the specified point within the specified time may result in demurrage costs. In export operations, using the container outside the specified periods may create similar costs.
The main purpose of demurrage is to prevent the carrier's container equipment from being used for an operation for longer than necessary. Containers are equipment that carriers must keep in constant circulation. Keeping a container at the customer or port for a long time prevents the carrier from using the same equipment for another shipment. Therefore, a daily fee is applied after the specified free time is exceeded.
Although demurrage is often seen as an unexpected expense that occurs after the cargo reaches the port, it is actually a cost risk that must be managed before the operation begins. The free period can be exhausted quickly if the estimated arrival date of the ship, whether the customs documents are ready, the vehicle on which the container will be towed, the unloading plan and the return point of the empty equipment are not determined in advance.
It may be difficult to manually track the free periods of containers, especially in high-volume import and export operations. Thanks to Logistics programs, container number, ship arrival date, free period end, customs status and delivery plan can be monitored on the same operation record. Thus, containers at risk of demurrage can be detected before the time expires and necessary actions can be taken.
How is Demurrage Time Calculated?
In calculating the demurrage time, the free time defined by the carrier for the relevant container is first taken into account. Free period is the time period during which the container can be used under certain conditions without incurring additional equipment usage fees. The starting and ending conditions of this period may vary depending on the carrier's tariff, port, container type and freight agreement.
For example, let's assume that a certain number of free days are defined for an imported container. If the container is withdrawn from the port, unloaded and delivered back to the point determined by the carrier within this period, demurrage may not occur. However, if the empty container is returned after the free period, the fee may be calculated according to the carrier's tariff for the exceeding days.
It is not enough to just know the number of days here. It should be clearly controlled with which event the free period begins. The date of the ship's arrival at the port, the discharge of the container or any other operation date can be taken as reference in the calculation. For this reason, the free time information received from the carrier should be followed with the initial condition instead of only being recorded as “7 days”.
Demurrage tariffs can often have a gradual structure. While a lower daily fee is applied during the initial delay period, the daily cost may increase as the waiting period increases. Therefore, the cost of a few days' delay may not be the same as the average daily cost of a long delay. It is important for the operations team to monitor not only when demurrage has started, but also which tariff level the container is approaching.
It should also be checked according to the carrier's conditions whether weekends and public holidays are included in the free time. Likewise, different duration and starting rules may be applied in import and export operations. The periods allowed for standard containers, reefer containers or special equipment may also be different.
For this reason, when calculating demurrage, the carrier's current tariff, the beginning of the free period, the number of free days, the container type and the actual return date should be evaluated together. Clarifying this information at the beginning of the operation is one of the most important steps in preventing high costs that may arise later.
How Does Free Time Affect Demurrage?
Free time is one of the most important factors that directly determine whether demurrage costs will occur or not. The longer the free period granted by the carrier, the more operational time the company has to perform customs clearance, container withdrawal, unloading and return operations.
However, a long free time does not always mean that the operation can be delayed. An unexpected check during customs procedures, lack of documents, port congestion or unavailability of a vehicle can quickly consume a few days of time. If the warehouse space and equipment are not prepared for unloading, especially in high volume loads, the return period may be extended even if the container is withdrawn.
It is not only important how many days the free period is, but also what services it covers. In some agreements, demurrage and detention periods can be defined separately, while in some carriers, a combined free period may be applied. For this reason, it should be clearly seen in the freight agreement which operation stages the expression "free time" covers.
For example, the fact that the container is withdrawn from the port on time may not mean that the demurrage or equipment usage costs have completely ended. Once the container is unloaded at the customer's site, the timely return of the empty equipment to the carrier must also be monitored. Otherwise, additional equipment usage fees may occur under different names.
In order to manage the free period correctly, the estimated and actual arrival dates of the ship, container discharge information, customs status, withdrawal plan and empty return date should be monitored together. Searching for vehicles or preparing an unloading area on the last day of the period puts the operation at unnecessary risk.
For this reason, companies should evaluate free time information not only as a detail in the freight offer, but among the basic dates of the operation plan. Especially in businesses that carry out regular container transportation, tracking free periods on the system helps manage demurrage costs before they occur.
What is the Difference Between Demurrage and Storage?
Demurrage and storage are often confused because they can occur together during the same delay. However, the reason for the two costs and the party requesting the fee are different. Demurrage is mainly associated with the use of the carrier's container equipment for longer than the specified free period. Warehouse is the storage fee incurred due to the space occupied by the cargo or container in a port, terminal, warehouse or similar area.
To see this difference more clearly, an imported container example can be considered. If customs procedures are delayed after the container is discharged from the ship, the cargo continues to wait in the terminal area. If this period exceeds the terminal's free storage period, storage may occur. At the same time, if the free time granted by the carrier for the container is exceeded, demurrage costs may occur.
For this reason, it is possible to encounter both demurrage and storage invoices for the same container on the same dates. The two costs are not alternatives to each other. Paying for one does not automatically prevent the other from occurring. Both periods must be followed separately in operation planning.
While the storage cost is mostly evaluated according to how long and how much space the cargo occupies on the field, the type of container and the usage period of the equipment are more decisive in demurrage. Different tariffs may apply for reefer or special equipment compared to standard containers.
Who pays the cost is also important in terms of distinction. While the storage cost mostly arises from the port, terminal or warehouse operation, the demurrage is related to the carrier or container line. This distinction makes it easier to record invoices received after the operation to the correct voyage and cost item.
Correct understanding of the difference between demurrage and storage is important not only in terms of terminology but also in terms of cost analysis. If an operation creates a permanent warehouse, the problem may be in the field or customs processes. If continuous demurrage occurs, the container towing, unloading or empty return plan may need to be evaluated separately.
According to which factors do demurrage fees vary?
There is no single daily rate for demurrage across all carriers. Recipe; It may vary depending on many factors such as the carrier company, container type, port, country, whether the operation is import or export, the free time granted and the length of the waiting period. For this reason, it should not be assumed that the amount applied to a past shipment will be the same for a new operation.
Container type may determine the cost. Daily usage costs of standard dry containers and reefer, open top, flat rack or other special equipment may not be the same. Especially the fact that refrigerated containers are more special and limited equipment may cause higher delay costs.
Waiting time also directly affects the total amount. In cases where a graduated tariff is used, the daily fee determined for the first few days may be increased in the following days. Thus, keeping the container for a long time creates higher costs. For this reason, "waiting a few more days" after the demurrage starts may create a larger cost difference than thought.
The length of free time also affects the total risk. Under the same operating conditions, there is a significant difference between five-day free time and ten-day free time in terms of the company's ability to complete customs clearance and domestic transportation plans. Companies with regular volumes should compare not only the main transportation cost but also the free time conditions during freight negotiations.
Although customs procedures do not directly change the demurrage tariff, they may consume the free time of the container and cause the total cost to increase. Missing documents, physical inspection, import permits or customer-related payment delays may prevent the container from being withdrawn. Likewise, not being ready for the unloading area or not being able to find a suitable vehicle may also extend the time.
The most effective way to reduce demurrage costs is not just to choose a low-fare carrier. The free time must be followed accurately, the documents must be prepared before the cargo arrives, the customs process must be planned, the towing organization must be made in advance, and the return of the empty container must be monitored as part of the operation. Thus, demurrage turns into a cost item that can be managed in advance, rather than being an expense noticed at the end of the operation.
