Free Time in Sea Freight: How Many Days You Actually Get Before Storage Charges Start

Every sea freight quote eventually mentions “free time,” usually as a small line item nobody asks about until the day their container is still sitting at Chattogram Port and a demurrage invoice shows up. Free time is the number of days you are allowed to keep a container at the port or in the shipping line’s custody before storage and usage charges start — and the confusing part for first-time importers is that there are actually two separate clocks running, controlled by two different parties, and they rarely match.

Two Different Clocks: Port Free Time vs Carrier Free Time

Chattogram Port Authority grants its own free time for how many days a container can occupy space in the port yard before port storage charges apply. Separately, the shipping line grants its own free time for how many days you can keep its container (the physical steel box, which the carrier owns or leases) before container usage or detention charges apply. These two allowances are set by two different organisations, negotiated and published separately, and there is no rule that says they have to be the same length. A shipment can clear the port storage free time window comfortably while still running up carrier detention charges, or the reverse, depending on how the two clocks are set for that specific booking and season.

How the Clock Actually Starts

Free time does not start when your cargo physically arrives in Bangladesh waters — it starts from the vessel’s discharge date at the port, the day the container is actually offloaded onto the yard. This detail matters because customs clearance delays, documentation issues, or a slow start on your C&F agent’s side eat directly into free time that is already ticking, regardless of why clearance is taking longer than planned. This is why a shipment that gets held up during customs clearance for reasons entirely outside the free-time policy itself can still end up facing storage charges purely because the days ran out while the paperwork was being sorted.

Why Free Time Allowances Are Not Fixed Numbers

Free time is not a single standard figure that applies to every shipment equally. It is set per shipping line, per trade lane, and often per season — carriers commonly tighten free time allowances during peak shipping periods when container turnover matters more to them, and it can also depend on the type of container (a reefer container carrying temperature-sensitive cargo is typically allowed less free time than a standard dry container, because the carrier wants its refrigerated units moving, not sitting idle). This is exactly why we will not give you a blanket number of days here — the honest answer is that your specific free time allowance is stated on your booking confirmation and bill of lading, and it is worth checking on every single shipment rather than assuming it matches your last one.

The Compounding Cost Once Free Time Runs Out

Once free time expires, storage and detention charges typically do not stay flat — many carriers and the port authority apply an escalating scale, where the daily charge increases the longer the container sits, specifically to create pressure to move cargo out quickly rather than let the yard fill up with idle boxes. A delay that seems minor on day one can become expensive by day five or six if the charge structure steps up partway through. This is covered in more general terms in our demurrage and detention guide, but the free time allowance is the number that determines when that clock starts ticking against you in the first place.

Where Free Time Terms Are Actually Documented

The free time allowance for a specific shipment is not something you need to guess or ask about separately — it is stated on the booking confirmation issued when the shipment is booked, and it should also appear on or be confirmable against the bill of lading once the shipment is underway. The mistake many first-time importers make is not reading this section of the booking confirmation closely, or assuming it matches whatever free time applied to a previous shipment with the same carrier. Since free time terms can change between bookings depending on season and container type, treating the booking confirmation as the authoritative source for that specific shipment, checked every time rather than assumed, is the simplest way to avoid being caught off guard by a shorter allowance than expected.

What Actually Eats Into Free Time in Practice

In our experience handling clearance for Bangladeshi importers, the free time window gets consumed by a predictable set of causes: documents not being ready before vessel arrival so clearance cannot begin on day one, a mismatch between the declared HS code or value and what customs expects that triggers a query, delays in arranging inland transport or a bonded truck for onward movement, and simply not having a C&F agent actively tracking the discharge date and clearance status daily. None of these are free-time policy problems — they are process problems that happen to run against a free-time deadline.

Free Time Extensions: When and How They Can Be Negotiated

Free time is not always a fixed, non-negotiable allowance. When a delay is genuinely outside your control — a documentation issue on the customs side, a port congestion event affecting many importers at once, or a carrier-side scheduling problem — shipping lines and the port authority will sometimes grant a short extension, particularly if the request is made before the free time window actually expires rather than after storage charges have already started accruing. This is a request, not an entitlement, and it depends heavily on the carrier, the specific circumstances, and how the request is framed and supported with documentation. Waiting until the last day to ask, or asking only after charges have begun, dramatically reduces the chance of a favourable response. An experienced C&F agent who has an existing working relationship with the shipping line’s local office is generally far more effective at securing an extension than a first-time importer contacting the carrier directly, simply because that relationship and track record carries weight in how the request is received.

How to Protect Yourself Against Running Out of Free Time

• Confirm the exact free time allowance (in days) on your booking confirmation before the vessel even departs China, not after arrival.
• Prepare and submit clearance documents before the vessel discharges, so clearance can begin the moment the container is available.
• Ask your C&F agent to actively track the discharge date rather than waiting for a notification, since free time starts from discharge, not from when you find out.
• For reefer or special cargo, confirm the (usually shorter) free time allowance separately — do not assume it matches standard dry container terms.
• If a delay looks likely, ask about extending free time or arranging early container return in advance, since negotiating after the clock has already run out is far harder.

The Bottom Line on Free Time

Free time is not a grace period you can ignore until something goes wrong — it is an active deadline from the moment your vessel discharges, split across two separate allowances that do not automatically align. Treating it as a fixed date to plan clearance around, rather than a vague buffer, is what actually keeps a shipment from turning into an unexpected storage bill. If you want a C&F partner actively tracking discharge dates and free time windows on your behalf, talk to DE International. See also our guides on terminal handling charges and the ICD process at Kamalapur, or browse our services for full door-to-door support.