How Much Does Demurrage Cost in 2026? Rate Guide by Day, Port & Carrier

Importers asking "how much does demurrage cost?" usually already have a bill in hand and want to know if the number is normal. Short answer: demurrage typically costs $75-$ 150 per container per day for the first few days overdue, stepping up to $225-$ 350+ per day after about a week — but the exact number depends on the port, the carrier, and how it's written into your contract. This guide breaks down the real cost ranges, shows how the math works, and explains why the same delay can cost very different amounts at different ports.

Demurrage Cost at a Glance

Days overdue	Typical demurrage cost (per container/day)	Typical detention cost (per container/day)
Days 1-3	$75 -$ 150	$100 -$ 150
Days 4-7	$150 -$ 225	$150 -$ 250
Day 8+	$225 -$ 350+	$250 -$ 400+

These are US and EU port ranges commonly seen in 2026. Rates are set by each terminal's tariff (for demurrage) or each carrier's contract (for detention) — there's no fixed national or international rate, so the same 5-day delay can cost noticeably more at a congested port than a quiet one.

Why Demurrage Costs Vary So Much by Port

Three factors drive most of the spread in what importers report paying:

Port congestion. Busier ports with limited yard space charge higher demurrage to discourage containers sitting idle — this is the single biggest driver of cost differences between ports.
Season. Peak shipping season (roughly August-October ahead of holiday retail) sees both higher congestion and, at some terminals, seasonal rate surcharges.
Contract terms. Carriers negotiate free-time and per-day rates differently by customer volume. A shipper moving hundreds of containers a year on a lane typically gets more free days and flatter per-day rates than an occasional importer paying the default tariff.

Worked Example: Calculating Total Demurrage Cost

Free time granted: 4 days from vessel discharge (a common allowance).
Actual pickup: delayed 4 days past free time due to a customs exam hold.
Rate applied: $125/day for days 1-3,$ 200/day from day 4 onward.
Total demurrage cost: 3 days × $125 + 1 day ×$ 200 = $575 on a single container.

Add detention if the carrier's equipment is also held past its free time elsewhere in the cycle, and a single delayed container can easily cost $800-$ 1,000+ once both fees are combined — see our full breakdown of demurrage and detention fees for how the two charges stack.

Demurrage Cost vs. Detention Cost: Same Delay, Two Bills

A single late container can generate both a demurrage bill and a detention bill, because they're charged by different parties for different things:

Demurrage cost is billed by the port/terminal for time the container spends in their yard.
Detention cost is billed by the carrier for time their equipment (container or chassis) spends outside the terminal, including at your warehouse.

Some carriers combine both into a single "per diem" line — if your invoice just says "per diem" rather than breaking out demurrage and detention separately, ask your carrier or forwarder for the split so you know which side of the delay to fix.

How to Estimate Demurrage Cost Before It Happens

Because demurrage cost depends on free time, port, and how long a hold lasts, most importers can't get an exact figure until the shipment is already moving — but a rough estimate is straightforward:

Check your bill of lading or booking confirmation for the free-time allowance (usually 3-5 days).
Estimate the realistic pickup delay, factoring in customs exam risk and trucking/chassis availability at your destination port.
Multiply the expected overage days by the terminal's published per-day tariff (available on most port authority websites) or your carrier's contracted rate.
Add a buffer — if you ship through a congested port or during peak season, budget for at least one extra tier of the per-day rate.

Reducing Demurrage Costs on Future Shipments

Pre-file customs entry before vessel arrival to avoid the most common cause of pickup delay.
Confirm trucking and chassis availability ahead of the vessel's arrival date, especially during peak season.
Negotiate additional free days with your carrier for recurring lanes — this is a routine ask that costs nothing if unused.
Track free-time deadlines by discharge date, not by the date you're notified, since the clock usually starts earlier than most shippers expect.

Run Your Import Analysis →

For the full breakdown of what triggers these charges and how to avoid them entirely, see Demurrage and Detention Fees Explained. To see how demurrage and detention fit into your total landed cost alongside duty and freight, run the numbers with ImportCostPro's calculator for US imports (EU version for European importers), or read our step-by-step landed cost formula.