Key Takeaways
- Demurrage charges at UK ports average £100 per day per container after free time expires
- Detention fees apply when containers are held inland beyond the return deadline — separate from demurrage
- Quay rent or port storage is a third charge levied by terminal operators, often overlooked by importers
- Free time typically ranges from 7 to 14 days depending on shipping line and trade lane
- Pre-clearing goods and booking VBS slots early are the most effective avoidance strategies
What Is Demurrage?
Demurrage is a charge levied by the shipping line when an import container remains inside the port or terminal beyond the agreed free time after discharge from the vessel. The clock starts ticking the moment the container is offloaded from the ship. Once your free time expires — typically 7 to 14 days depending on the carrier and trade lane — daily charges begin to accrue.
At UK ports in 2026, demurrage rates average approximately £100 per day per container, according to Universal Customs Clearance’s port charges data. This applies across major gateways including Felixstowe, Southampton, London Gateway, Tilbury, Liverpool, and Teesport. The charge is billed by the shipping line, not the port operator, and appears on your freight invoice as a separate line item.
The purpose of demurrage is to incentivise rapid cargo removal and keep terminal space available for incoming vessels. Containers left sitting on the quay represent lost capacity — space that could be used for fresh imports. Shipping lines use demurrage to recover the opportunity cost of that occupied ground.
Crucially, demurrage applies only while the container remains inside the terminal boundary. The moment it gates out — passes through the port’s exit gates — demurrage stops. But another clock may start ticking: detention.
What Is Detention?
Detention is the sister charge to demurrage, but it applies to a different situation. Detention fees are charged when an importer holds a shipping line’s container outside the port — typically at their own warehouse or an inland depot — beyond the allowed return period.
Think of it this way: demurrage is for containers lingering at the port; detention is for containers lingering in your possession inland. The shipping line owns the container, and they need it back in circulation for the next voyage. Every day you keep it past the deadline is a day they cannot reposition or re-use that asset.
Detention rates vary more widely than demurrage, typically ranging from $50 to $200 per day depending on the carrier and route, according to Hapag-Lloyd’s published tariffs. Some lines offer combined free time covering both demurrage and detention periods — for example, 14 days total that can be split between port time and inland time as you choose. Others allocate separate free time buckets for each.
The key distinction: demurrage stops when the container gates out; detention starts when the container gates out and doesn’t stop until the empty container is returned to the designated depot.
Quay Rent: The Third Charge Importers Miss
There is a third charge that often catches importers by surprise: quay rent, also called port storage or terminal storage. This fee is levied by the terminal operator — not the shipping line — for occupying ground space within the port.
Quay rent is separate from demurrage and can run concurrently with it. According to Universal Customs Clearance, indicative quay rent rates at UK ports in 2026 are approximately £75 per day for a 20-foot container and £100 per day for a 40-foot container. Some ports bundle quay rent into demurrage; others bill it separately.
The confusion arises because demurrage and quay rent serve similar purposes — both penalise containers that occupy terminal space — but they are collected by different parties. Demurrage goes to the shipping line; quay rent goes to the port operator (DP World, PSA Felixstowe, Peel Ports, etc.).
When budgeting for a shipment, importers must account for all three potential charges: demurrage (shipping line), detention (shipping line), and quay rent (terminal operator). Missing any one of these can turn a seemingly profitable import into a loss.
UK Port Rates and Free Time in 2026
Free time is the grace period before charges begin. It is negotiated between the shipping line and the importer or freight forwarder, though standard terms apply for non-contract shipments. Typical free time at UK ports ranges from 7 days for short-sea European traffic to 14 days for deep-sea imports from Asia or the Americas.
Some carriers offer extended free time as a competitive differentiator. CMA CGM, for instance, publishes demurrage and detention tariffs that vary by trade lane, with longer free time on certain Asia-UK services. Always check the specific carrier’s tariff before booking — do not assume standard terms apply.
Total standard port costs per container at major UK gateways in 2026 include:
- Felixstowe: £136 per container (base port charges, excluding D&D)
- Southampton: £155 per container
- London Gateway: £155 per container
- Tilbury: £90 per container
- Liverpool: £155 per container
- Teesport: £75 per container
These figures come from Universal Customs Clearance’s 2026 port charges summary. They represent baseline costs before any demurrage, detention, or quay rent is added.
Escalating rate structures are common. iContainers reports that some carriers charge $100 per day for the first three days after free time expires, then $250 per day for days four through ten, and $350 per day beyond ten days. The longer you wait, the more expensive each additional day becomes. This progressive pricing is designed to force action — the cost curve becomes unsustainable quickly.
How Charges Escalate: The Compounding Cost Trap
The real danger with demurrage and detention is not the base rate — it is the compounding effect when multiple charges stack. Consider a scenario where a 40-foot container arrives at Felixstowe and sits for 18 days before being collected:
- Days 1–14: free time (no charge)
- Days 15–18: 4 days of demurrage at £100/day = £400
- Days 15–18: 4 days of quay rent at £100/day = £400
- Total port-side charges: £800
Now suppose the container is collected on day 18 but held at the importer’s warehouse for another 10 days before the empty is returned:
- Days 19–28: 10 days of detention at £150/day (mid-range rate) = £1,500
- Cumulative D&D + quay rent: £2,300
A single delayed shipment can easily accumulate four-figure charges. For high-volume importers moving dozens of containers per month, unchecked demurrage and detention can erase margins entirely.
The escalation is intentional. Shipping lines and terminal operators use steep progressive pricing to discourage cargo from clogging their facilities. A container stuck in customs clearance or waiting for a warehouse slot becomes a liability — and the importer pays for that liability through D&D charges.
Common Causes of Demurrage and Detention
Understanding what triggers these charges is the first step toward avoiding them. The most frequent causes include:
Documentation delays. Missing or incorrect bills of lading, commercial invoices, or packing lists can hold up customs clearance. If the shipping line does not have complete documentation, they will not release the container — and the demurrage clock keeps running.
Customs holds. HMRC may select a shipment for inspection, either randomly or due to risk profiling. An inspection can add days or weeks to clearance time. Unless you have pre-cleared the goods before arrival, you are exposed to demurrage during the hold period.
Warehouse capacity constraints. If your warehouse is full when the container arrives, you cannot accept delivery. This happens frequently during peak seasons (Q4 for retailers) or when inbound planning is poor. The container sits at the port, accruing charges, until space becomes available.
VBS slot failures. Most UK ports operate a Vehicle Booking System (VBS) that requires hauliers to book a specific time slot before collecting a container. If slots are fully booked — common at Felixstowe and Southampton during busy periods — you may be unable to collect the container even if it is legally cleared. No slot means no collection, and collection delays mean demurrage.
Inland transport breakdowns. A lorry breakdown, driver shortage, or fuel supply issue can prevent a scheduled collection. Unlike port-side delays, these are entirely within your control — yet the shipping line does not care about the cause. The charge applies regardless.
Disputes over freight payment. Some shipping lines will not release cargo until all freight charges are settled. If there is a billing dispute or a delayed payment, the container remains on the terminal, and demurrage accumulates during the dispute period.
Practical Strategies to Avoid Charges
Avoiding demurrage and detention requires proactive planning and tight coordination across your supply chain. The following strategies are proven to reduce or eliminate these charges:
Pre-clear goods before arrival. Submit your customs declaration as soon as you have the bill of lading and commercial invoice — do not wait for the vessel to dock. HMRC’s Customs Declaration Service (CDS) allows pre-lodgement, and once cleared, the container can be collected immediately upon discharge. Pre-clearance removes the customs clearance variable from the port-side timeline. For more on customs procedures, see our guide to customs clearance.
Book VBS slots early. As soon as the estimated time of arrival (ETA) is confirmed, book your haulage collection slot. At congested ports, slots can be fully booked several days in advance. Do not assume you can book a slot the day before collection — treat VBS booking as a critical path item.
Negotiate extended free time. If you are a regular importer with predictable volumes, negotiate longer free time with your shipping line as part of your service contract. Moving from 7 days to 14 days of free time doubles your buffer at no extra cost. This is especially valuable for shipments prone to customs delays or complex inspections.
Track container status in real time. Use the shipping line’s tracking portal or a third-party visibility platform to monitor your container’s discharge date and free time expiry. Set internal alerts for 3 days before free time expires. Early warning allows you to escalate collection priorities before charges kick in.
Have inland transport ready. Coordinate with your haulier and warehouse to ensure the collection date is locked in before the vessel arrives. Confirm the lorry is booked, the driver is assigned, and the warehouse has space to receive the goods. A breakdown in any of these links causes port-side delays.
Use customs warehousing or bonded facilities. If you cannot clear goods immediately on arrival, consider moving them into a bonded warehouse or customs warehouse. These facilities allow duty suspension while goods are stored, and they are often located near ports with fast transfer times. This approach is particularly useful for high-value or duty-sensitive cargo. Learn more about warehouse operations in our warehouse KPIs guide.
Maintain accurate documentation. Ensure your commercial invoice, packing list, and bill of lading are complete and consistent before submission. Discrepancies between documents trigger customs queries, which delay clearance. Use a checklist to verify all fields match before sending to your broker.
Consider freight forwarder managed D&D. Some freight forwarders offer demurrage and detention management as a service. They track your containers, book VBS slots, and escalate collections on your behalf. For importers with limited in-house logistics capacity, this can be a cost-effective way to avoid charges. Understanding freight costs and where D&D fits into your total landed cost is essential for budgeting.
Key Takeaways
- Demurrage applies to containers left at the port beyond free time; detention applies to containers held inland beyond the return deadline
- UK port demurrage averages £100 per day in 2026, with quay rent charged separately by terminal operators
- Free time typically ranges from 7 to 14 days but varies by carrier and trade lane — always verify before booking
- Charges escalate progressively: the longer you wait, the higher the daily rate becomes
- Pre-clearing customs, booking VBS slots early, and negotiating extended free time are the most effective avoidance strategies
Frequently Asked Questions
What is the difference between demurrage and detention? Demurrage is charged when a container remains inside the port or terminal beyond the free time after discharge. Detention is charged when a container is held outside the port (e.g. at your warehouse) beyond the allowed return period. Demurrage stops when the container gates out; detention starts when it gates out and stops when the empty is returned.
How much is demurrage at UK ports? In 2026, demurrage at major UK ports (Felixstowe, Southampton, London Gateway, Tilbury, Liverpool, Teesport) averages approximately £100 per day per container. Quay rent or port storage may be charged separately at around £75/day for 20ft and £100/day for 40ft containers.
What is free time in shipping? Free time is the grace period granted by the shipping line during which no demurrage or detention charges apply. Typical free time ranges from 7 days for short-sea European traffic to 14 days for deep-sea imports. Some carriers offer extended free time as part of negotiated contracts.
Who charges demurrage — the port or the shipping line? Demurrage is charged by the shipping line. Quay rent (also called port storage or terminal storage) is charged by the terminal operator. Both can apply simultaneously, and both appear as separate line items on your invoice.
Can I negotiate demurrage charges? Once charges have accrued, they are rarely waived unless there was a carrier-caused delay (e.g. vessel arrived late, documentation error by the line). However, you can negotiate extended free time in your service contract before shipping, which reduces the risk of charges accruing in the first place.
How do I avoid demurrage and detention charges? The most effective strategies are: pre-clear goods through customs before arrival, book VBS collection slots as early as possible, negotiate extended free time with your carrier, track container status in real time, and ensure inland transport and warehouse capacity are ready for collection.