Demurrage and Detention: The Hidden Costs of Slow Container Movement
If you ship containers through the Port of Houston, you’ve probably been hit with demurrage or detention charges at some point. These fees — charged by steamship lines when containers or chassis aren’t returned within the allotted free time — can add hundreds or even thousands of dollars to a single shipment. The good news is that most demurrage and detention charges are preventable with proper planning and the right drayage partner.
Demurrage vs. Detention: What’s the Difference?
Demurrage
Demurrage is charged when an import container sits at the terminal beyond its free time period. Free time typically ranges from 3 to 7 days depending on the steamship line and your contractual terms. Once free time expires, charges accumulate daily — and they escalate. The first few days might cost $100-150 per day, but charges can climb to $300+ per day after a week. For a forgotten or delayed container, a single demurrage bill can easily exceed $1,000.
Detention
Detention is charged when you keep a container and/or chassis beyond the allowed time after it’s been picked up from the terminal. In other words, once the drayage carrier delivers the container to your warehouse, the clock starts ticking on detention. You need to unload the container and make it available for return within the free time window — typically 4-5 business days.
Strategies to Minimize These Charges
1. Pick Up Containers Promptly
The single most effective way to avoid demurrage is to pick up containers as soon as they’re available. This requires a drayage carrier who can respond quickly — ideally within 24-48 hours of container availability. At Sunbelt Drayage, we monitor container availability and schedule pickups proactively to stay within free time.
2. Pre-Pull When Necessary
If your warehouse isn’t ready to receive a container but free time is expiring, a pre-pull to a storage yard stops the demurrage clock. Yes, you’ll pay a pre-pull and storage fee, but these are typically much cheaper than terminal demurrage. A good drayage company will advise you when a pre-pull makes financial sense.
3. Coordinate Warehouse Receiving
Detention charges accumulate because containers sit at warehouses waiting to be unloaded. Coordinate your warehouse receiving schedule with your drayage deliveries so containers can be stripped and returned quickly. Provide your drayage carrier with accurate receiving hours and any dock restrictions upfront.
4. Track Free Time Carefully
Different steamship lines offer different free time allowances, and these can vary by contract. Know your free time for every container and communicate it to your drayage carrier. The best carriers track this for you and flag containers approaching free time expiration.
5. Use a Drayage Company That Returns Empties Fast
Once a container is unloaded, the chassis and empty container need to be returned to the terminal or designated return location. Delays in empty returns extend detention. Choose a drayage partner with disciplined empty return processes — this is where smaller, focused drayage companies often outperform larger carriers.
6. File Disputes When Appropriate
The FMC (Federal Maritime Commission) has issued rules requiring steamship lines to provide clear demurrage and detention billing. If you believe charges are unfair — for example, if free time expired during a weekend when the terminal was closed — dispute the charges. Document everything and know your rights.
How Sunbelt Drayage Helps
We treat demurrage and detention avoidance as a core part of our service, not an afterthought. Our dispatch team monitors container availability, proactively schedules pickups within free time, and coordinates empty returns to minimize your exposure. For containers at risk of demurrage, we offer pre-pull and storage at our Houston facility as a cost-effective alternative.
Stop paying unnecessary demurrage and detention. Get an instant drayage quote or call (832) 358-3406 to discuss your container volumes.
]]>