Port of Shanghai Demurrage Calculator
Estimate import container demurrage at the Port of Shanghai (China) with editable free time and tariff tiers.
Set a tier's days to 0 to mean “all remaining days”.
Example tariff shaped for Shanghai import flows — replace with your carrier's published China tariff or service-contract terms for exact figures.
With your numbers: 12 days − 6 free = 6 chargeable days = 4×$95 + 2×$155 = $690 per container.
Sources & references
- Port of Shanghai / 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.
The Port of Shanghai is the world's busiest container port, anchored by the deep-water Yangshan complex. When an import container overstays its free time here, the carrier's demurrage clock prices every extra day in escalating tiers — this calculator reproduces that math for Shanghai pickups so the invoice never surprises you.
About Port of Shanghai Demurrage Calculator
COVID-era lockdowns in 2022 showed how quickly its yards can lock up — and how carriers handled mass free-time extensions. The preloaded example uses 6 free days and tiers of $95×4d, $155×4d, $245+ — realistic for this gateway but deliberately editable, because your service contract or the terminal's current schedule is the only tariff that counts. Use it three ways: before vessel arrival, to budget worst-case dwell; at the last-free-day decision point, to price one more day of waiting against premium drayage; and after the invoice, to audit the carrier's day count and tier application line by line. Most recovered demurrage money comes from that third pass.
How to use Port of Shanghai 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 Shanghai 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 Shanghai owe after 12 days?+
Under the preloaded example (6 free days, then $95 for 4d, $155 for 4d, $245 after): 6 chargeable days = 4 × $95 + 2 × $155 = $690 per container. Your tariff's actual brackets may differ — edit the tiers to match before relying on the figure.
When does free time start counting at Shanghai?+
Per your carrier's tariff — typically from container discharge or from when it becomes available for pickup (which can lag discharge during big exchanges). The trigger definition is the first thing to check on a disputed invoice: a one-day difference in the start date often equals a whole top-tier day at the end.
What did the 2022 lockdown teach about Shanghai demurrage?+
That documented force-majeure windows produce blanket extensions: during the 2022 closures most carriers extended free time or suspended D&D for affected boxes, but settlement still required matching your container's dates to the announced window. Keep carrier advisories with dates — the same playbook applies to any future disruption.
Demurrage vs detention — which one is this?+
This models demurrage: the box inside the Shanghai terminal past free time. Detention/per diem — the clock after gate-out until empty return — runs on separate free time and rates. Use our container detention calculator for that leg; on a slow door move you may genuinely owe both.
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