Amazon's FBA Barcode Rules Are Changing: What Sellers Need to Know Before January 2026
Amazon is changing FBA barcode requirements effective January 31, 2026. Brand owners can continue using manufacturer barcodes, but non-brand owners must now use FNSKU barcodes for all FBA products, ending stickerless commingled inventory for resellers.
Overview
Amazon is overhauling its barcode requirements for Fulfillment by Amazon (FBA) inventory, with a key deadline of January 31, 2026. The change draws a clear line between brand owners and non-brand owners: brand-registered sellers can continue shipping products with manufacturer barcodes (stickerless), while all other sellers will now be required to use Amazon FNSKU barcodes — even if their products already carry a valid manufacturer barcode. Sellers who rely on stickerless, commingled inventory need to understand these changes now to avoid shipment rejections and operational disruptions.
Key Points / What Sellers Need to Know
- Deadline is January 31, 2026 — After this date, the new barcode requirements take full effect. Sellers should update their workflows and labeling processes well in advance.
- Brand owners are exempt from the change — If you are enrolled in Amazon Brand Registry and own the brand, you can continue using manufacturer barcodes (UPC, EAN, ISBN, or JAN) without applying sticker labels.
- Non-brand owners must switch to FNSKU barcodes — Sellers who are not brand owners will be required to use Amazon's FNSKU barcode system for all FBA products, regardless of whether the product has a manufacturer barcode.
- Every FBA item needs a barcode — Each unit sent to an Amazon fulfillment center must have a scannable barcode for tracking purposes, whether that is a manufacturer barcode or an FNSKU label.
- Eligibility matters — Not all products qualify for manufacturer barcode use. Items that are ineligible must already use FNSKU barcodes, and this will not change.
How FBA Barcodes Work
Amazon's fulfillment centers rely on barcodes to receive, store, track, and ship inventory. There are two barcode options available to FBA sellers. Manufacturer barcodes — including UPC, EAN, ISBN, and JAN codes — are the standard product identifiers already printed on most retail packaging. When sellers use manufacturer barcodes, their inventory may be commingled with identical products from other sellers in Amazon's warehouses. The alternative is Amazon's proprietary FNSKU (Fulfillment Network Stock Keeping Unit) barcode, which is unique to each seller's listing and ensures that a specific unit is always tied to the seller who shipped it. FNSKU labels must be printed and physically applied to each unit before shipping to Amazon.
Analysis & Recommendations
Why This Matters
This change forces non-brand-owning FBA sellers to adopt FNSKU labeling, adding prep costs and workflow changes. Failing to comply by January 2026 could result in shipment rejections at Amazon fulfillment centers.
Key Takeaways
- Non-brand owners must switch to FNSKU barcodes by January 31, 2026 — manufacturer barcodes will no longer be accepted for these sellers
- Brand Registry enrolled brand owners are exempt and can continue using stickerless manufacturer barcodes
- FNSKU labeling eliminates commingling risk, protecting sellers from being penalized for other sellers' defective inventory
- Sellers should update FBA barcode settings in Seller Central and establish a labeling workflow before the deadline
Recommended Actions
- →Review your Brand Registry status and FBA barcode settings in Seller Central immediately to determine if you are affected
- →Set up an FNSKU label printing workflow or arrange with your prep center/3PL before the January 2026 deadline
- →Consider switching to FNSKU barcodes even if you are a brand owner, to avoid commingling-related quality complaints
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