Charges incurred when cargo or containers are held beyond the agreed free time at a port (demurrage) or outside the port (detention). In vehicle logistics, these fees apply when vehicles aren't collected from the terminal within the allotted window.
What are Demurrage and Detention?
These two terms get used interchangeably, but they're different charges triggered at different points:
Demurrage is the fee for keeping cargo at the port or terminal beyond the allotted free time after vessel discharge. The clock starts when the vehicle is unloaded from the ship and placed in the terminal compound. Free time is typically 3-7 days depending on the terminal and the contract.
Detention applies when cargo has left the port but the container or equipment hasn't been returned within the agreed timeframe. In containerized shipping, this means late return of the empty box. In vehicle logistics, detention is less common since vehicles are self-contained — but it applies when terminal-provided equipment (MAFI trailers, cassettes) isn't returned on schedule.
The distinction matters because they're billed by different parties: demurrage by the terminal operator, detention by the shipping line or equipment owner.
Why This Hits Hard in Vehicle Logistics
A delayed customs clearance on a container affects one box. A delayed customs clearance on a RoRo shipment can affect hundreds of vehicles sitting in the compound at once.
The math adds up fast
Terminal storage rates for vehicles typically run $5-15 per vehicle per day after free time expires. A batch of 200 vehicles stuck for 10 extra days at $10/day = $20,000 in avoidable charges. Add customs penalties and the cost of missed dealer delivery windows, and a single documentation error can generate five-figure losses.
Common triggers in vehicle logistics:
- Customs hold — missing or incorrect import documentation (wrong HS codes, incomplete B/L, missing certificates of origin)
- Payment delays — letters of credit not released, import duties unpaid
- Consignee no-show — the importer hasn't arranged transport from the terminal
- Regulatory inspection — vehicles flagged for emissions compliance, safety recalls, or biosecurity checks (common in Australia and New Zealand)
- Port congestion — during peak season, terminals may restrict gate-out operations, extending dwell time beyond the importer's control
How to Avoid Charges
The best defense is getting documentation right before the vessel arrives:
Pre-Arrival Preparation
Submit customs declarations 48-72 hours before vessel arrival. Confirm all B/L details match the commercial invoice. Pre-arrange inland transport so trucks are ready at gate-out. Have duty payments processed and import permits in hand before discharge.
Terminal Communication
Know your free time allowance for each terminal (it varies). Monitor vessel ETA changes — an early arrival shortens your preparation window. Set up automated alerts from the terminal's tracking system for gate-out deadlines. Negotiate extended free time in your annual contract if volumes justify it.
For operations managing high volumes across multiple terminals, platforms like Logisoft track dwell time per vehicle in real time and flag units approaching free-time expiry — turning a reactive cost problem into a proactive workflow.
Negotiating Free Time
Free time isn't fixed. Terminals and shipping lines offer different allowances based on volume commitments, contract terms, and trade lane. Standard free time ranges from 3 days (busy hub ports) to 14 days (smaller ports competing for business). High-volume importers with annual contracts can often negotiate 7-10 days free at ports where the standard is 3-5.
The negotiation leverage comes from volume: terminals want consistent throughput, and extending free time for a reliable customer costs them less than losing the account to a competing port.
FAQ
What's the difference between demurrage and detention?
Demurrage is charged for cargo sitting at the port terminal beyond free time — billed by the terminal operator. Detention is charged for equipment (containers, trailers) held outside the port beyond the agreed return period — billed by the shipping line or equipment owner. In vehicle logistics, demurrage is the more common charge since vehicles are stored in the terminal compound after RoRo discharge.
How much does vehicle demurrage cost?
Rates vary by terminal and region, typically $5-15 per vehicle per day after the free time window expires. Some terminals use tiered pricing — $5/day for the first week over free time, escalating to $10-15/day after that. High-value or oversized vehicles may incur premium storage rates. Free time is usually 3-7 days from the date of vessel discharge.
Can demurrage charges be disputed?
Yes, if the delay was caused by factors outside the importer's control — port congestion, customs system outages, or incorrect vessel documentation by the carrier. Successful disputes require evidence: timestamped gate records, customs processing logs, and correspondence showing the delay wasn't caused by the consignee. Having complete documentation from the start makes disputes significantly easier to win.