Maersk Demurrage & Detention Calculator
Recompute Maersk D&D invoices: free time, tiered daily rates and per-container totals with an editable tariff.
Set a tier's days to 0 to mean “all remaining days”.
Defaults approximate a common Maersk import structure — pull the exact brackets from Maersk's published per-country D&D tariff for your trade lane and equipment type.
With your numbers: 10 days − 4 free = 6 chargeable days = 3×$160 + 3×$240 = $1,200 per container.
Sources & references
- Maersk — published demurrage & detention tariff (per country/trade)
- FMC 46 CFR Part 541 billing requirements (US trades)
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.
Maersk is the world's second-largest container line, which in 2023 simplified many markets to a single combined demurrage-and-detention clock. Like every carrier it bills demurrage and detention under published per-country tariffs — and like every carrier, its invoices reward shippers who can recompute them. This calculator applies Maersk-realistic defaults (4 free days, tiers to $340/day) that you should overwrite with the exact brackets from the tariff page for your trade.
About Maersk Demurrage & Detention Calculator
Maersk publishes per-country D&D tariffs and offers paid free-time extensions at booking via products like Deposit-free D&D bundles. Knowing the carrier's specific mechanics matters more than the generic D&D theory: the tariff document for your country and direction is the contract you're auditing against. Run the calculation at three moments: when the arrival notice lands (budget the dwell you expect), on the last free day (price one more day against premium trucking), and when the invoice arrives (recompute it line by line). The third pass is where audits find money — day-count errors and wrong-column rates survive in a surprising share of carrier invoices.
How to use Maersk Demurrage & Detention Calculator
- 1Enter days on the d&d clock 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 Maersk Demurrage & Detention 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
Where do I find Maersk's official D&D tariff?+
On Maersk's website under demurrage & detention (filed per country and direction, usually with effective dates). Use the document in force on your container's discharge date and the column matching your equipment type — then enter those free days and brackets here to recompute the invoice exactly.
What would 10 days on the clock cost with Maersk-typical rates?+
With the preloaded example (4 free days, then $160 for 3d, $240 for 4d, $340 after): 6 chargeable days = 3 × $160 + 3 × $240 = $1,200 per container. Treat it as a calibration point, not a quote — your filed tariff governs.
What is Maersk's combined D&D clock?+
In many trades Maersk merged demurrage and detention into one continuous free-time pool covering terminal dwell and street time together. That helps shippers who are fast on one leg and slow on the other — but it means this calculator should be fed the combined free days and the blended tier rates from Maersk's country tariff page, not separate demurrage-only numbers.
Can I negotiate free time with Maersk?+
Yes — service contracts and even spot bookings can carry extended free time, and it's almost always cheaper than paying tariff-rate D&D. Volume, lane balance and equipment turn speed are your leverage. Price the ask first: this calculator shows what your historical dwell pattern costs at tariff rates, which is exactly the number to bring to the negotiation.
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