Amazon Ends Commingling March 31, 2026: The Complete Action Guide for FBA Sellers

Have you received the notification from Seller Central yet? On March 31, 2026, Amazon officially ends its stickerless commingling program — a system that has existed for over a decade. This is one of the most significant operational changes for FBA sellers in years.

The good news? If you understand what changes for you and act quickly — you can not only avoid problems but gain a serious advantage over competitors. Let's break down exactly what this means for your business.

What Is Commingling and Why Is Amazon Ending It?

Amazon Commingling (officially "stickerless commingled inventory") is a system introduced over a decade ago. Under it, Amazon pools identical products from multiple sellers in shared warehouse bins. When a customer orders, Amazon ships the nearest available unit — regardless of which seller sent it.

Until now, if your product had a manufacturer barcode (UPC, EAN, ISBN), you could ship it to Amazon FBA without applying FNSKU labels. This saved significant labor and cost — especially for high-volume resellers.

However, commingling created a serious problem: if a bad actor shipped counterfeit or damaged units of "the same" product — your customers could receive them. Major brands temporarily left Amazon because they couldn't control product quality. In just the past year, brand owners spent approximately $600 million re-stickering products — just to opt out of the commingling system.

Amazon announced the end of the program at Amazon Accelerate 2025, where it received the loudest applause of any announcement at the event. The reason: advances in the logistics network now allow fast delivery without pooled inventory.

Which Sellers Are Affected (and How)?

This change does not affect all sellers equally. Your situation depends on three factors: your role (Brand Owner vs. Reseller), whether your products have a manufacturer barcode, and whether you're currently using stickerless commingling.

Brand Owners with Brand Registry (Brand Representative role) ✅

If your products have a manufacturer barcode and you're in Brand Registry with the Brand Representative role — you don't need to do anything. The change works in your favor:

• You can ship without FNSKU stickers (using manufacturer barcode)
• You save re-stickering costs entirely
• Your inventory history is clean and traceable only to you
• Returns and negative reviews link only to your supply chain

AMZ Genesis example: A client in the home care segment was spending $2,340/month re-stickering 3,900 units purely to avoid commingling. From March 31st, those costs disappear completely — $28,080 saved annually.

Important note: Brand Registry with the Reseller role (not Brand Representative) does NOT give you this privilege. Check in Seller Central → Brand Registry to confirm your status.

Resellers (OA, RA, Wholesale — without Brand Representative status) ⚠️

If you're currently shipping products to FBA with manufacturer barcodes (without FNSKU labels), you must change this process before March 31, 2026. The consequences of non-compliance are serious:

• Inventory received without FNSKU after the deadline is treated as defective
• It may be difficult to track within your account
• It's not eligible for reimbursement under FBA policy

In short: you risk shipping hundreds of units, being unable to locate them in the system, and having no right to compensation if they disappear.

Step-by-Step: What to Do NOW

Step 1: Check your settings in Seller Central (today)

Go to: Seller Central → Manage Inventory → FBA barcode preference

Check whether your listings are set to "Manufacturer barcode" or "Amazon barcode (FNSKU)". For every listing with manufacturer barcode — if you're a reseller — change it to "Amazon barcode." Time required: 15-30 minutes.

Step 2: Generate FNSKU labels for your inventory

For every product you'll ship after March 31st, go to: Manage Inventory → Select ASIN → Print FNSKU labels. Ensure every label is scannable and correctly placed, and that the label-ASIN-condition match is exact.

Recommendation: Test scanning a few labels with a phone camera or barcode reader before processing large volumes.

Step 3: Evaluate in-transit inventory

Units received by Amazon before March 31 may be accepted under the old rules. To be safe — switch to the new process at least 7-10 days before the deadline. The risks of borderline timing aren't worth it.

Step 4: Update supplier agreements

If your supplier or prep center handles sticker application — they need to know about the change. Make sure your agreement covers FNSKU labeling, they understand how to generate FNSKU labels, and label quality meets Amazon requirements.

Step 5: Calculate the financial impact

FNSKU labeling adds a per-unit cost. Here are approximate figures:

• Self-labeling (in-house): $0.05 - $0.10 / unit — best for under 200 units/month
• Prep center: $0.15 - $0.35 / unit — best for 200 - 5,000 units/month
• Supplier labeling at manufacturing: $0.03 - $0.08 / unit — best for over 1,000 units/month

At 1,000 units/month at a prep center rate of $0.25/unit — you're adding $250/month = $3,000/year. Important to include in your pricing calculations.

Case Study: How AMZ Genesis Helped a Client

A reseller in the sports accessories niche was selling 2,400 units/month entirely stickerless. They received the notification in November 2025 and came to us.

What we did:

1. Audited 127 active listings → 89 required barcode setting changes
2. Negotiated with prep center for FNSKU labeling at $0.22/unit
3. Negotiated with 3 suppliers for at-source labeling during manufacturing
4. Updated the March inventory plan for a smooth transition

The result: Zero defective shipments after March 31st. Additional cost only $528/month. Bonus: Cleaner inventory tracking revealed $2,100 in unreimbursed inventory discrepancies.

Frequently Asked Questions (FAQ)

Do I need to re-label inventory already in Amazon FBA warehouses?

No. Inventory already in Amazon FCs and received before March 31st is not affected. The change only applies to new shipments received after the deadline.

What if I'm not sure about my Brand Registry role?

Go to Seller Central → Brands → Brand Registry → Your brands. Under your brand, you'll see your role: "Brand Representative" or "Reseller." Only "Brand Representative" exempts you from the FNSKU requirement.

What about products with no barcode at all?

Such products ALWAYS required FNSKU labels — nothing changes for them.

Can I bundle products without FNSKU?

Bundles and multi-packs, regardless of Brand Registry status, require FNSKU labels (since they don't have manufacturer barcodes). This hasn't changed.

Key Takeaways

✅ Amazon ends stickerless commingling on March 31, 2026 — a hard deadline
✅ Brand owners (Brand Representative role) don't need to do anything — the change benefits them
✅ Resellers must add FNSKU labeling to ALL shipments before the deadline
✅ Inventory without FNSKU after March 31 = defective, hard to track, not eligible for reimbursement
✅ Prep center labeling cost: $0.15-$0.35/unit
✅ Brand owners save from the $600M industry-wide re-stickering spend

Next step: Log into Seller Central → check barcode preference → if you're a reseller, switch to Amazon barcode for all listings.

Or contact AMZ Genesis for a free account audit and concrete action plan before the deadline.

Author: AMZ Genesis Team | Last Updated: March 2026 | Sources: Amazon Seller Central, Amazon Accelerate 2025, PrepMeisters, NovaData