Detention & Demurrage Calculator
Calculate excess costs for container dwell times
Demurrage = dwell time at port. Detention = dwell time at customer. Both become chargeable once agreed free days are exceeded.
Tiered rates (per container/day)
Tier 1 (Days 1–5)
USD
Tier 2 (Days 6–10)
USD
Tier 3 (Day 11+)
USD
Tips to Avoid D&D
- →Negotiate free day extensions with the carrier early.
- →Return containers immediately after unpacking.
- →Fix deadlines and rates in the contract upfront.
- →Build in buffer for long customs clearance times.
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