Demurrage & Detention Guide 2026: Rates, Rules, and How to Reduce Them

Published: March 2026

Demurrage and detention charges cost the global shipping industry an estimated $22 billion per year, yet most shippers still cannot accurately estimate what they will owe before a container arrives. These fees accumulate quickly — often $100–$150 per container per day — and they compound with every delay in the supply chain, from port congestion to warehouse scheduling problems.

This guide breaks down what demurrage and detention actually are, how much they cost by region and carrier in 2026, what regulations protect you, and concrete steps you can take to reduce these charges.

What Are Demurrage and Detention?

The terms are often used interchangeably, but they refer to two distinct charges based on where the container is sitting when it exceeds its allotted free time.

Demurrage

Demurrage is the fee a shipping line charges when a loaded container remains at the port terminal beyond the agreed free time period. The clock starts when the container is unloaded from the vessel and stops when it leaves the terminal gate. If your container sits at the port for 7 days and your free time allowance is 4 days, you owe demurrage for 3 days.

Example: A 40-foot container arrives at the Port of Los Angeles. The carrier grants 4 free days. Due to a documentation delay, the container is not picked up until day 8. At $150/day, the shipper owes $600 in demurrage for the 4 excess days.

Detention

Detention is the fee charged when a container is held outside the port — typically at a warehouse, distribution center, or depot — beyond the allowed free time for unloading and returning the empty container. The clock starts when the container leaves the terminal and stops when the empty is returned to the carrier’s designated location.

Example: You pick up a container from the port on Monday. The carrier allows 5 free days for detention. Your warehouse team finishes unloading on Wednesday, but the empty container is not returned to the depot until the following Monday — day 7. You owe detention for 2 days.

In practice, both charges punish the same underlying problem: containers sitting idle when the carrier wants them back in circulation.

How Much Does D&D Cost in 2026?

Rates vary significantly by carrier, port, container type, and region. The following table summarizes typical 2026 ranges based on published tariff data across major trade lanes.

Reefer (refrigerated) containers consistently attract higher charges than dry containers, often 1.5x–2x the standard rate, because of the additional power and handling costs at the terminal.

Free Days: The Hidden Variable

Every D&D invoice starts with the number of free days a carrier grants before charges begin. This is the single most important variable in your total cost, and it varies widely.

• Standard free time is typically 3–7 days for demurrage and 4–7 days for detention, depending on the carrier, port, and trade lane.
• Contract vs. tariff rates: Shippers with annual service contracts often negotiate additional free days beyond the published tariff. A contract might grant 7 free days where the tariff offers only 4.
• Port-specific variation: The same carrier may grant 5 free days at Rotterdam but only 3 at Newark, reflecting local congestion levels and terminal agreements.
• Weekends and holidays: Some carriers exclude weekends and public holidays from the free time count; others do not. This detail alone can mean the difference between 0 and 2 chargeable days.
• Tiered escalation: Many tariffs increase the per-day rate the longer a container stays. Days 1–3 beyond free time might cost $100/day, while days 8+ could jump to $250/day.

The takeaway: always confirm the exact free day count, exclusion rules, and escalation tiers before a container arrives. The published tariff may differ from what your contract states, and the contract may differ from what the carrier actually applies.

FMC Rules: Your Rights as a US Shipper

The US Federal Maritime Commission (FMC) finalized its rule on demurrage and detention billing practices, and it is now fully operational in 2026. This is the first contract cycle where shippers can negotiate using real visibility data alongside regulatory backing.

Key Provisions

• 30-day invoicing requirement: Carriers and marine terminal operators must issue D&D invoices within 30 calendar days of the charge being incurred. Late invoices weaken the carrier’s ability to collect.
• Billing party restrictions: Only the contracting party (typically the shipper or freight forwarder named on the bill of lading) or the consignee can be billed. Carriers cannot send invoices to third parties who had no role in the shipment.
• Minimum invoice content: Each invoice must contain specific information, including the container number, free time start/end dates, applicable tariff rate, and the basis for the charge. If the invoice is missing required information, the billed party has no obligation to pay.
• January 2026 update: The FMC removed a portion of the rule following a court decision. Shippers should review the current version to understand which provisions remain enforceable.

What This Means in Practice

If you receive a D&D invoice that arrives more than 30 days after the charge, or that lacks the required detail, you have grounds to dispute it. Document everything: gate-in/gate-out timestamps, free time agreements, and any carrier communications about delays.

Regional Differences: US vs. EU vs. India vs. Asia

The most consequential difference for shippers operating in India is the simultaneous application of demurrage and detention. In the US and EU, you pay demurrage while the container is at the terminal, then detention after it leaves. In India, both clocks can run at the same time, effectively doubling the per-day cost during overlap periods.

How to Reduce D&D Costs

Demurrage and detention are not inevitable. The following strategies can reduce your exposure by 30–60% when applied consistently.

1. Negotiate Free Days in Your Service Contract

The published tariff is the starting point, not the final offer. Most carriers will grant additional free days — sometimes 2–4 extra days — in exchange for volume commitments or longer contract terms. This is the highest-leverage negotiation item in any shipping contract.

2. Pre-Clear Customs Documentation

The most common cause of demurrage is waiting for customs clearance while the container sits at the terminal. Submit all documentation — commercial invoice, packing list, bill of lading, certificates of origin — before the vessel arrives. Many customs systems now accept advance filings 48–72 hours prior to arrival.

3. Schedule Drayage Before Arrival

Book your trucking or drayage provider before the vessel berths, not after. Containers that sit at the terminal while you search for a trucker are pure demurrage waste. Use vessel tracking to confirm the ETA and coordinate pickup within the free time window.

4. Monitor Free Time Expiration in Real Time

Set up alerts for every container tied to its specific free time deadline. Many shippers lose track of 50–100 containers at a time and only discover overruns after the invoice arrives. Automated monitoring turns a reactive problem into a proactive one.

5. Dispute Incorrect Invoices

Under the FMC rule, invoices that arrive late or lack required information can be disputed. Even outside the US, carriers frequently bill for days that should be excluded (weekends, holidays, or carrier-caused delays such as equipment unavailability). Audit every invoice against your records.

6. Use Rate Comparison Data

D&D rates vary significantly between carriers on the same trade lane. A carrier charging $100/day with 5 free days may be cheaper than one charging $75/day with only 3 free days, depending on your typical dwell time. The only way to know is to compare tariffs across carriers at the lane level.

7. Consolidate Empty Returns

If you handle multiple containers per week, coordinate empty returns in batches rather than one at a time. Some depots offer extended return windows or reduced fees for scheduled bulk returns, and the logistics savings on trucking alone can offset detention costs.

Compare D&D Rates Across Carriers

Accurate rate comparison is the foundation of every strategy listed above. Without knowing what each carrier charges at each port, you cannot negotiate effectively, choose the lowest-cost option, or validate the invoices you receive.

The ShippingRates API provides programmatic access to demurrage and detention tariffs across 8 major carriers — MSC, Maersk, COSCO, Hapag-Lloyd, ONE, Evergreen, CMA CGM, and ZIM — covering 158 countries with over 13,095 tariff records.

With these endpoints, you can build D&D cost estimates into your booking workflow, flag high-risk lanes before committing to a carrier, and arm your procurement team with the data they need during contract negotiations.

2026 is the first year where the regulatory framework (FMC billing rules), the data infrastructure (real-time tariff APIs), and the market pressure (rising rates across North America and Europe) have converged to give shippers genuine leverage over D&D costs. The shippers who use that leverage will be the ones who stop treating these charges as an unpredictable cost of doing business and start treating them as a controllable line item.