SM Line Demurrage & Detention Calculator
Recompute SM Line 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 SM Line import structure — pull the exact brackets from SM Line's published per-country D&D tariff for your trade lane and equipment type.
With your numbers: 10 days − 4 free = 6 chargeable days = 4×$125 + 2×$200 = $900 per container.
Sources & references
- SM Line — 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.
Every SM Line import runs two clocks: demurrage while the box sits on terminal, detention after gate-out until the empty returns. SM Line is the Korean trans-Pacific carrier launched in 2017 from Hanjin's asset remnants — and its tariff structure reflects that scale. Model either clock here: free days, tier rates, days elapsed.
About SM Line Demurrage & Detention Calculator
Worth knowing: As a smaller line it leans on terminal partners' infrastructure — whose storage schedules, not SM Line's D&D, often dominate the total charge at destination. The practical move is to capture this context before charges accrue — extension requests citing carrier-side specifics get materially better answers than generic pleas after the invoice. A 10-day dwell under the example tariff totals $900 per container (4 × $125 + 2 × $200). If that number is uncomfortable, the calculator has done its job before the carrier's billing system does its own — the cheapest dispute is the pickup you accelerated instead.
How to use SM Line 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 SM Line 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 SM Line's official D&D tariff?+
On SM Line'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 SM Line-typical rates?+
With the preloaded example (4 free days, then $125 for 4d, $200 for 3d, $290 after): 6 chargeable days = 4 × $125 + 2 × $200 = $900 per container. Treat it as a calibration point, not a quote — your filed tariff governs.
Whose tariff drives charges on an SM Line import?+
Both: SM Line bills demurrage under its filed tariff, while the terminal partner bills storage under its own schedule. With smaller carriers the terminal layer is frequently the bigger number. Audit the two lines separately — and note the terminal schedule is public even when you have no contract with the terminal.
Can I negotiate free time with SM Line?+
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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