Amazon Ends FBA Commingling From 31 March 2026: What Sellers Need to Know?

Introduction

Amazon has recently announced a pivotal shift in its Fulfillment by Amazon (FBA) operations. Starting March 31, 2026, the platform will officially end commingling practices across its entire supply chain.

For years, commingling was a staple of Amazon’s “behind-the-scenes” logistics, helping the retail giant achieve record-breaking delivery speeds. However, as the network matures, Amazon is prioritizing brand integrity and inventory traceability over shared bins. Here is everything you need to know about this transition and how to prepare your business.

What Were the Practices Before the Update?

Previously, Amazon allowed commingling inventory for eligible products. Under this system, Amazon could fulfil a customer’s order using an identical product stored at the nearest fulfilment centre, even if that inventory belonged to a different seller.

The logic behind commingling was speed. By pooling identical products, Amazon could reduce delivery times and shipping costs, especially when sellers had limited regional inventory coverage.

However, commingling also introduced challenges, including:

1. Limited traceability for individual sellers’ stock
2. Brand authenticity concerns
3. Risk of counterfeit or altered products being shipped

The 2026 Update: What’s Changing?

As of March 31, 2026, Amazon will no longer mix inventory from different sellers. Every unit will be tracked back to the specific seller who sent it.

Amazon’s logistics network has expanded so significantly that most sellers now keep enough inventory to be “close to the customer” naturally. The speed benefits of commingling are no longer necessary to meet Prime delivery promises.

Key operational changes include:

1. Resellers (non–Brand Registry sellers):
   Amazon barcodes (FNSKU labels) will be mandatory, even if products already carry UPC or EAN codes.
2. Brand Owners enrolled in Brand Registry (Brand Representative role):
   Amazon barcodes will not be required if the product has a valid manufacturer barcode.
3. Products without manufacturer barcodes:
   Amazon barcodes will be mandatory for all sellers, without exception.
4. SKU adjustments:
   New SKUs may need to be created for affected ASINs to transition to Amazon barcodes.
5. Shipment compliance: Any shipment created after 31 March 2026 without the required Amazon barcodes will be marked defective at receiving.
6. Inventory already in FCs or in transit: Will not be impacted by the change.

Additionally, Amazon is waiving low-inventory-level fees on affected ASINs until the end of April 2026, giving sellers a transition buffer.

Advantages of the Change

While the transition requires some extra prep work, it offers significant long-term benefits:

1. Counterfeit Prevention: By ending the pooling of stock, “bad actors” can no longer hide counterfeit goods in a shared bin with authentic products.
2. Traceability: If a customer receives a damaged or expired item, Amazon can now trace it back to the exact seller, protecting the reputation of diligent sellers.
3. Inventory Accuracy: Sellers gain total control over their specific stock, ensuring their own quality control standards are what the customer sees.

What does it mean for Amazon Sellers?

For sellers, this update means greater control but also greater responsibility.

Sellers will need to:

1. Review ASINs affected by commingling
2. Update labelling processes and packaging workflows
3. Create new SKUs where required
4. Ensure all post–31 March 2026 shipments are fully compliant

Brand owners benefit the most, as Brand Registry enrolment removes the need for Amazon barcodes when valid manufacturer barcodes exist. Resellers, however, must prepare mandatory FNSKU labelling across applicable listings.

Early preparation is critical to avoid shipment defects, inventory delays, and listing disruptions.

What does it mean for Amazon Buyers?

For customers, this change largely operates behind the scenes but delivers meaningful benefits:

1. Greater confidence in product authenticity
2. Reduced chances of receiving incorrect or substituted items
3. More consistent product quality

Amazon maintains that delivery speeds will remain fast, as inventory is now already positioned closer to customers without relying on commingling.

Also Read: How Export Accelerator helped Petway Petcare expand from an Australian favourite to a global Amazon success?

Conclusion

Amazon’s decision to end FBA commingling from 31 March 2026 signals a clear move toward greater transparency, brand protection, and inventory integrity. While sellers must adapt their labelling and SKU strategies, the long-term outcome supports a more reliable marketplace for both businesses and buyers.

Sellers who assess their catalogues early, align with the new barcode requirements, and adjust operational workflows will be best positioned to transition smoothly and continue scaling on Amazon without disruption.