Port of Charleston Demurrage Calculator
Estimate import container demurrage at the Port of Charleston (USA) with editable free time and tariff tiers.
Set a tier's days to 0 to mean “all remaining days”.
Example tariff shaped for Charleston import flows — replace with your carrier's published USA tariff or service-contract terms for exact figures.
With your numbers: 11 days − 5 free = 6 chargeable days = 4×$145 + 2×$220 = $1,020 per container.
Sources & references
- Port of Charleston / terminal operator published tariff (storage & free time)
- Carrier demurrage & detention tariff for the relevant trade lane
Demurrage, detention and storage tariffs are set by each carrier, terminal and contract and change frequently. The preloaded figures are editable industry-typical examples, not quotes — always verify against the current published tariff or your service contract before paying or disputing an invoice.
Importers routing through Charleston — the deep-harbor South Atlantic port (52 ft channel) operated by SC Ports, including the newer Leatherman Terminal — face the same two-clock reality as every major gateway: carrier demurrage on the box and terminal storage on the ground slot. This tool models the demurrage layer with Charleston-realistic defaults (5 free days, escalating to $315/day).
About Port of Charleston Demurrage Calculator
SC Ports runs its own terminals like Georgia — one published tariff covering storage, reefer and heavy-lift items. That local context matters when disputing: charges driven by the port's own dynamics rather than your idleness are the recoverable kind, and knowing the pattern is half the evidence. Work the math before the deadline, not after: enter days since discharge, your contracted free time and the tariff tiers. The per-tier breakdown mirrors how the carrier's billing system itemises the invoice, so any mismatch you find is a concrete dispute line — not a feeling that the bill is high.
How to use Port of Charleston Demurrage Calculator
- 1Enter days since discharge and how many containers are affected.
- 2Set your free days and edit the tariff tiers to match the published tariff or your contract — every figure is editable.
- 3Read the per-tier breakdown and the worked example showing exactly how the total is built, day by day.
- 4Change the inputs to compare scenarios (pick up now vs later) before the charges harden into an invoice.
Why use Port of Charleston Demurrage Calculator?
- ✓Per-tier breakdown mirrors how carrier and terminal billing systems itemise invoices
- ✓Every figure — free time, tier days, rates — is editable to match any published tariff
- ✓Instant what-if comparisons before charges harden into an invoice
- ✓Free and private — all math runs in your browser
Frequently asked questions
How much demurrage would a container at Charleston owe after 11 days?+
Under the preloaded example (5 free days, then $145 for 4d, $220 for 3d, $315 after): 6 chargeable days = 4 × $145 + 2 × $220 = $1,020 per container. Your tariff's actual brackets may differ — edit the tiers to match before relying on the figure.
What triggers the demurrage clock at Charleston?+
Carrier tariffs key the clock to discharge or availability, and at Charleston the distinction matters during heavy vessel exchanges when availability notices lag the crane. Compare the notice timestamp on your arrival notice with the invoice's day one — mismatches there are the easiest demurrage dollars to recover.
Why does Charleston's deep harbor matter to my charges?+
Bigger ships call, and a 15,000-TEU exchange can flood a yard with imports in a day — free time burns while availability notices queue. Charleston counters with port-run terminals and one published tariff, so verifying which day your box actually became 'available' (the free-time trigger) against the vessel's discharge records is straightforward and worth doing.
Does this calculator cover detention (per diem) too?+
The math engine handles any free-time-plus-tiers structure, so yes — switch the inputs to your detention free days and per-diem tiers and it prices the after-gate-out leg identically. Just don't mix the two tariffs in one calculation; carriers bill them as separate line items with separate clocks.
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