
10 Sep 2026
Prime Big Deal Days Deal Deadline Extended to September 22. Here Is What to Do Before the Window Closes.
Amazon just extended the deal sourcing window for Prime Big Deal Days to September 22, 2026, giving sellers a few extra days to submit promotions for the event that kicks off Q4 peak season.
If you have not submitted deals yet, this is the window. But there is more to prepare for than just the deals themselves.

What Is Still Open and What Is Already Closing
Deal submission for Prime Big Deal Days is open until September 22. Eligible promotion types include Best Deals, Lightning Deals, Prime Exclusive Discounts, and Coupons.
One detail worth knowing: Prime Big Deal Days promotional prices are excluded from the 30-day and 60-day lookback window used to calculate maximum deal prices for Black Friday Week and Cyber Monday. You can price aggressively now without affecting your Black Friday Week deal eligibility later.
For Black Friday Week, the deal submission window closes November 18.
Prime Exclusive Discounts now require a minimum product rating of 3.5 stars. If any of your target ASINs fall below that threshold, they are ineligible regardless of discount depth.

Inventory Cutoffs for European Sellers
For Prime-badge eligibility, inventory must arrive at European fulfillment centers by September 9 for EU markets and September 16 for the UK. For Black Friday Week: October 21 for EU, October 28 for the UK. Missing these means no Prime eligibility during the event. If you are expecting higher Q4 volume, use Capacity Manager to secure additional storage space now; inbound slots become limited from November onward.
Peak Season Fees
The festive peak fulfillment fee runs October 15, 2026 through January 14, 2027 in the UK and Germany:
- UK: average £0.12 per small and standard parcel, £0.07 per large and extra-large envelope
- Germany: average €0.27 per unit for small and standard parcels
The 1.5% fuel and logistics surcharge applies on top.
Two Things Worth Doing Before September 22
First, if you have products with more than 90 days of supply or inventory aged over 180 days, use the Prime Big Deal Days traffic window to move them. List these ASINs on Amazon Outlet to reach deal-seeking customers and reduce long-term storage exposure before peak fees arrive.
Second, start advertising now. Supporting your deal ASINs with Sponsored Products campaigns before the event ensures they are indexed and gaining velocity when traffic arrives. Campaigns launched the day an event begins start cold. Campaigns already running arrive warm.

September 22 is close. The deals, inventory positioning, and advertising setup all need to be in motion before then, not after.
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