Amazon FBA Delivery Window: The 7-Day Cross-Border Rule Reported for 1 September 2026

The rule Amazon has actually published says a cross-border FBA inbound shipment needs a 14-day delivery window and a domestic one needs 7 days, and only sellers on a non-partnered carrier have to enter it at all. Trade press reported on 13 August 2026 that international shipments into the UK, Germany, France, Italy and Spain move to a seven-day window from 1 September 2026 — but as of 18 August 2026 we could not open an Amazon-published page that says so. That gap is the whole point of this guide: the change is credible and worth preparing for, and it is also not something you should treat as confirmed policy until Amazon’s own page or your own Seller Central notification says it.

This guide separates the two, then shows how to pick a window you can actually hit on a lane that has to clear customs. It is about the inbound window you declare in Send to Amazon — not the appointment your carrier books at the door, which is covered in Amazon Carrier Central.

What Amazon Has Published vs. What Is Only Reported

Two separate things are in play, and mixing them up is the single most common error in the coverage of this change.

Data checked 2026-08-18.

The published half is quotable. Amazon’s UK Seller Forums announcement establishing the requirement reads: “Starting February 9, 2024, we’ll be rolling out a new Send to Amazon requirement to help us stock your products faster.” It then sets the two lengths in one sentence — “we’ll ask you to specify a date range; 7-day delivery window for domestic shipments or a 14-day delivery window for cross-border shipments that have longer lead times” (Seller Forums, UK, read 2026-08-18).

The reported half comes from ChannelX on 13 August 2026, which quotes the seller notification as saying “Starting from the 1st of September 2026, you must provide a seven-day delivery window when you send international Fulfilment by Amazon (FBA) inventory shipments” to fulfilment centres in “the United Kingdom, Germany, France, Italy, and Spain” (ChannelX, read 2026-08-18). We tried the Seller Central help hub, the UK and pan-EU Seller Forums search, and Amazon’s news categories on 2026-08-18; the help hub URLs return the logged-out Seller Central shell rather than the article body, and no announcement thread carrying this text surfaced. Absence of a reachable page is not evidence the change is fake — most FBA policy detail sits behind a login — but it does mean you should verify it against the notification in your own account before you rebuild a shipping plan around it.

What a Delivery Window Actually Is, and Who Has to Enter One

A delivery window is your own estimate, entered by you, of the date range in which your shipment will land at the fulfilment centre. It is not a promise Amazon makes to you, and it is not the carrier appointment.

Three details from the published announcement matter more than anything else:

• It is a range, not a date. Amazon asks for a span precisely because “transportation lead times vary.”
• It is editable until it opens. “If your shipping plans change, you can update the information until the start of your delivery window on Send to Amazon in the ‘Tracking details’ step.” Once the window’s first day arrives, that door closes.
• Most sellers on Amazon’s own logistics never touch it. The announcement is explicit: “if you use a non-partnered carrier for small parcel or less-than-truckload shipments, you must provide a delivery window on Send to Amazon. If you use an Amazon-partnered carrier or Amazon Global Logistics, no action is required because the carrier will provide us with shipment arrival information.”

So the population exposed to any tightening is narrow and specific: sellers moving their own freight into EU5 fulfilment centres with a forwarder or carrier that is not in Amazon’s partnered programme. If you book through Amazon Global Logistics, the field is filled for you.

What Would Change on 1 September 2026

If the reported change lands as described, it is a tightening of an existing rule, not a new rule. The 2024 announcement already required a window on every non-partnered inbound; what moves is the permitted width on the cross-border lane — from fourteen days down to seven for shipments into UK, German, French, Italian and Spanish fulfilment centres.

That halving is the entire story, and it is why the framing matters. Nothing suggests the partnered-carrier exemption disappears; ChannelX’s report says the opposite, quoting the notification as stating that “If you use one of Amazon’s integrated solutions (Partnered Carrier program or Amazon Global Logistics), delivery windows will continue to be populated automatically.”

Two contextual notes, both clearly labelled as weaker evidence. First, US sellers have been arguing about a comparable calendar-week requirement since roughly August 2025 — one US Seller Forums thread is titled “Effective September, all shipments both domestic and international will be required to provide a one calendar week ( Sun - Sat) delivery window”. That is a seller thread rather than an Amazon announcement page, and the forum displays only a relative timestamp, so treat the date as approximate. Second, when an international seller raised customs delays against that requirement, the Amazon moderator reply on the thread pointed to planning three or more weeks ahead and updating the window before it opens, rather than to any customs exception (paraphrased, not quoted; both threads read 2026-08-18).

Why Seven Days Is Harder Than It Sounds on a Cross-Border Lane

Fourteen days absorbs an entire category of risk that seven days does not. On an Asia-to-Europe ocean lane, the variance is not in the sailing — it is in everything bolted to either end:

• Customs clearance. A documentation query, a physical exam, or an EPR or GPSR check can add days with no notice. Whether your paperwork is in order is partly a compliance question — see Amazon EPR compliance in the EU — and partly a timing one.
• Port and terminal congestion. Vessel bunching moves discharge by 24–72 hours routinely, and peak season makes that worse.
• Deconsolidation and the final leg. After clearance, your freight still has to be broken down, palletised to Amazon’s spec and trucked to a specific FC that may be several hundred kilometres inland.
• The appointment itself. Delivery is not arrival at the gate; it is a booked slot. If the FC’s next available slot is four days out, your window can expire while the trailer sits.

Stack those and a fortnight of slack becomes a week of slack, on a route where a single customs query eats most of it. The practical consequence of missing a window is not a fine — it is that your inventory arrives unexpected, gets processed on Amazon’s schedule rather than yours, and can sit unreceived at exactly the moment you need it sellable. That is a Q4 problem far more than an August problem; the dated version of that calendar is in the Amazon Q4 checklist.

How to Pick a Window You Can Actually Hit

Work backwards from the appointment, not forwards from the factory. The window you enter should be centred on the booked delivery date, not on the estimated time of arrival at port.

1. Anchor on ETA at the destination port, taken from the carrier’s schedule, not the supplier’s promise.
2. Add your clearance allowance. Use your own last five clearances on that lane as the sample, and take the slowest, not the average. If you have no history, ask the forwarder for their P90 rather than their typical.
3. Add deconsolidation and trucking. For a warehouse-to-FC leg your forwarder should quote this in days, not hours.
4. Add the appointment lead time. Ask what slot availability at that FC currently looks like; peak weeks are the constraint, not the norm.
5. Set the window to open on the resulting date and run it forward the permitted length. Opening early is not free: once day one arrives you can no longer edit.
6. Diarise a review three days before the window opens and update it if the ship slipped. Editing before the window starts costs nothing; missing it costs receiving priority.

If step 2 keeps producing a spread wider than the permitted window, the answer is not a braver estimate. It is either moving that lane onto a partnered carrier or AGL so the field is populated from carrier data, or breaking the trip in two — landing into a domestic buffer and inbounding from there, which is what Amazon Warehousing and Distribution or a third-party warehouse is for. A shipment that inbounds from a warehouse inside the same country is a domestic shipment, and domestic shipments have always been on the 7-day window.

Partnered Carrier, AGL, or Your Own Forwarder

The choice you make here decides whether the rule touches you at all.

That table is not an argument for AGL. Amazon’s own freight is frequently more expensive than a good forwarder on the same lane, and the comparison is a cost question before it is a compliance question — the arithmetic is laid out in how to choose an FBA freight forwarder. What the table does say is that “who fills in this field” is now a variable worth pricing, and that a forwarder who cannot give you a reliable clearance distribution for your lane is a forwarder who is about to cost you receiving priority.

A Pre-1-September Checklist

• Open your own Seller Central notifications and confirm whether the change appears there for your marketplaces. Your account is the authoritative source; this guide is not.
• List every open inbound shipment with a delivery window starting on or after 1 September 2026, and check whether the current window would still be valid at half the width.
• For each EU5 lane, pull your last five clearance durations and write down the slowest.
• Confirm which of your lanes are partnered-carrier or AGL and which are not. Only the “not” list needs work.
• Check your inbound plan against your FBA restock limits before you compress schedules — arriving early has its own ceiling.
• Set a reminder three days before each window opens to re-check and edit while editing is still possible.

Frequently Asked Questions

Is the 7-day cross-border window confirmed?

Not by anything we could open on 18 August 2026. It was reported by ChannelX on 13 August 2026, quoting a seller notification, and the detail is consistent across trade coverage. Amazon’s own published announcement still describes a 14-day cross-border window. Check the notification inside your own account before acting as if it is settled.

Does this replace the 2024 delivery window rule?

No. It narrows one part of it. The requirement itself dates to the Send to Amazon change effective 9 February 2024, which set 7 days for domestic and 14 days for cross-border shipments on non-partnered carriers. The reported 1 September 2026 change alters only the cross-border length for five European marketplaces.

Do I need a delivery window if I use an Amazon partnered carrier?

Under the published rule, no. Amazon’s announcement states that with an Amazon-partnered carrier or Amazon Global Logistics “no action is required because the carrier will provide us with shipment arrival information,” and the reported change is said to leave that auto-population in place.

Can I still edit the window after I submit the shipment?

Yes, until the window opens. Amazon’s announcement says you can update the information “until the start of your delivery window on Send to Amazon in the ‘Tracking details’ step.” After day one of the window, that option is gone.

What happens if my shipment misses the window?

Amazon’s published announcement frames the window as an input for planning receiving capacity rather than as a penalised commitment, and describes inaccurate windows as something that can slow receiving. In practice the cost shows up as delayed check-in and a longer gap before units are sellable. If units go missing rather than late, that is a different process entirely — see FBA reimbursements.

Conclusion

Treat this as two decisions on two clocks. The confirmed one is available today: know which of your lanes require you to enter a window at all, and start collecting real clearance durations for them, because a seven-day window is only frightening if you are guessing. The unconfirmed one — whether EU5 international inbound really halves on 1 September 2026 — should be verified in your own Seller Central notifications rather than from any secondary write-up, this one included.

If your answer to a tighter window is “we would have to guess harder,” that is the signal to move the lane onto partnered transport or to buffer it domestically before Q4, not in the middle of it.

Data checked 2026-08-18. Sources: Amazon UK Seller Forums announcement of the Send to Amazon delivery window requirement (effective 9 February 2024) and ChannelX, 13 August 2026.