When Is Demurrage Charged? Free Time, Start Dates and Billing Triggers

When Is Demurrage Charged?

Understanding when demurrage is charged is essential to avoiding unexpected costs. Demurrage is a time-based fee levied when cargo, containers, railcars, or chartered vessels remain in custody beyond an agreed free period. However, exactly when the clock starts, how days are counted, and what exceptions apply can vary significantly depending on carrier tariffs, terminal rules, international conventions, and local practice.

Core concepts that determine timing:

• Free time: A specified period—measured in days or hours—granted by carriers or terminals during which cargo or equipment can remain on their premises without charge. Free time may differ by cargo type (container vs bulk), import vs export, and by customer contract.
• Start date: The moment when counting free time begins. Common start triggers include completion of vessel discharge, presentation of delivery order, customs release date, or arrival time at a terminal. The carrier tariff will define the precise start point.
• End date and billing: After free time expires, demurrage rates are applied usually on a daily basis. Some carriers bill by calendar day, others by working day, and some by hourly increments.

Variations and practical rules:

• Calendar days vs business days: Some terminals count weekends and public holidays as part of free time; others exclude them. Excluding non-working days effectively extends the free time but is only valid if the tariff explicitly says so.
• Grace periods: A small grace period (hours) may exist before demurrage begins. Grace periods are often minimal and not universal.
• Partial days: Many carriers bill a full day for any part of a day the container is overdue. Read the tariff to confirm whether partial days are pro-rated.
• Customs and inspections: Official holds, inspections, or quarantines may or may not stop the demurrage clock. Some terminals allow documented exceptions; most expect the consignee to present official paperwork to dispute charges.
• Events outside control: Force majeure events like strikes, severe weather, or port closures are sometimes carved out, but carriers rarely waive demurrage without clear contractual provisions or regulatory directives.

Example timeline:

1. Vessel arrives and discharges containers on March 1.
2. Carrier's tariff grants 5 calendar days of free time starting March 1.
3. Customs clears the cargo on March 3. The consignee picks up the container on March 7.
4. Counting free time from March 1 means March 1-5 are free; March 6 is the first day of demurrage. Pickup on March 7 results in 2 days of demurrage.

Important operational triggers to track:

• Vessel discharge completion: The commonly used start point, especially for containerized cargo.
• Customs release: In some cases free time starts only when customs releases goods; in others it starts at discharge and customs delays do not stop the clock.
• Delivery order release: If a carrier issues a delivery order, the terminal may expect pickup within the remaining free time.
• Notification vs physical availability: Receiving a notice that cargo is available is not the same as the cargo being physically released; verify both status and the tariff-defined start point.

How to avoid being charged:

1. Know the carrier and terminal tariff in advance, and confirm start date rules and holiday policies.
2. Coordinate customs clearance and inland pickup proactively; prioritize documents and permits as arrival approaches.
3. Track shipments electronically and monitor for release notifications; act immediately when release occurs.
4. If a hold is unavoidable, secure official documentation and notify the carrier promptly to support a demurrage dispute if needed.
5. Negotiate contractual protections such as demurrage caps or extended free time for predictable or high-volume routes.

Disputes and appeals:

If you receive a demurrage invoice you believe is incorrect, collect timestamps and official records that show when goods were available, when customs released, and when the terminal issued pickup instructions. Submit a written dispute within the carrier or terminal's published time window and include supporting documentation. Timely action and clear evidence significantly increase the chances of adjustment.

Final thoughts

In short, demurrage is charged after agreed free time expires, but precisely when depends on tariff definitions, the documented start trigger, and local practices. Knowing the specific rules for each terminal and planning around them is the best way to prevent unnecessary charges.