If you sell on Amazon, staying on top of marketplace policy news is no longer optional — it is a survival skill. The pace of change in 2025 and 2026 has moved faster than many experienced sellers can comfortably track. Policy updates, fee revisions, FBA rule changes, and advertising platform shifts are all happening simultaneously, and they interact with each other in ways that are easy to miss if you follow them in isolation. This guide brings all the most critical Amazon marketplace policy news together in one place, so you can understand what has changed, what it means for your business, and what actions to take right now.

1. The New Agent Policy: AI Tools and Third-Party Software Now Under Contract

One of the most significant Amazon marketplace policy changes of early 2026 is one that many sellers initially overlooked. Amazon updated its Business Solutions Agreement (BSA) to include the first formal Agent Policy in the platform’s history, announced on February 17, 2026, and effective March 4, 2026.

The policy creates a new contractual category called “Agent,” covering any automated software or AI tool that accesses Amazon services on a seller’s behalf. Three baseline obligations now apply to all agents: they must identify themselves as automated systems at all times, they must comply with the Agent Policy continuously, and they must cease access immediately if Amazon requests it.

The reach of this policy is broad. Pricing tools, restock tools, PPC management platforms, reimbursement services, and any application that interacts programmatically with Seller Central or the Amazon Ads API now has explicit contractual obligations it did not have before March 4. Every seller should review all third-party tools connected to their Amazon account and confirm in writing that each software provider is fully compliant with the new BSA Agent Policy.

2. Commingling Ends: Every Unit Now Tracked to Its Seller

Another major policy shift taking effect in March 2026 is the permanent end of commingling. Commingling is the practice of fulfilling customer orders using exact product matches from the closest available inventory in the Amazon fulfillment network, even if that inventory belonged to a different seller. Effective March 31, 2026, every unit in Amazon’s network will be tracked back to the originating seller account.

For brand owners registered in Amazon Brand Registry, this change actually brings new flexibility — they will no longer need to apply Amazon barcode stickers to prevent commingling for products that already carry manufacturer barcodes such as UPCs or ISBNs. However, resellers not enrolled in Brand Registry will now be required to use Amazon barcode stickers for all products, even those with existing manufacturer barcodes. This is a significant operational change that requires immediate attention from resellers managing large inventories.

3. FBA Fee Updates: Small Increases in the U.S., Major Reductions in Europe

On the fee front, 2026 brings a split picture depending on where you sell. In the United States, FBA fees will increase by an average of $0.08 per unit sold — a modest figure on paper, but one that can meaningfully erode margins on lower-priced products. This follows a year with no U.S. referral or FBA fee increases in 2025, so sellers should re-run their margin models with the extra cost factored in before finalizing 2026 pricing.

The picture in Europe is far more favorable. Amazon announced one of its largest-ever fee reductions for European marketplaces, lowering fees by an average of £0.15 or €0.17 per unit sold across Europe. FBA fulfillment fees for parcels in the UK, Germany, France, Italy, and Spain dropped by an average of £0.26 or €0.32 per unit starting December 15, 2025. For sellers willing to diversify internationally, this fee reduction represents a genuine opportunity to expand into European markets with improved unit economics.

4. Reimbursement Policy Overhaul: From Retail Price to Manufacturing Cost

One of the most financially impactful changes to hit Amazon sellers in late 2025 was the shift in how reimbursements are calculated for lost or damaged FBA inventory. Under the new rules, Amazon now reimburses sellers based on manufacturing cost rather than retail price — a change that can result in dramatically lower recovery values.

Sellers must now document their manufacturing costs accurately and ensure that invoices match their inputs in the “Manage Your Manufacturing Cost” section of Seller Central. Amazon has also introduced clearer options around damaged inventory ownership, giving sellers explicit choices about whether to retain ownership of damaged goods or let Amazon take possession. Retaining ownership gives sellers control to request removal, refurbishment, or brand-protection actions, while relinquishing ownership simplifies handling but may mean less recovery value.

5. Review Sharing Restrictions: Variation Policies Tightened

Amazon began a phased rollout of new review-sharing restrictions starting February 12, 2026, with full implementation completing across all product categories by May 31, 2026. Under the updated policy, products grouped primarily for review-sharing benefits rather than genuine functional similarity will lose the advantages of consolidated review counts.

Products with legitimate variation relationships — such as different sizes or colors of the same item — maintain their ability to share reviews. However, listings that were grouped primarily to accumulate ratings rather than reflect genuine product relationships will see those reviews separated. Amazon stated the change aims to improve accuracy and help customers make more informed purchasing decisions by ensuring reviews reflect product-specific feedback. Sellers should proactively review their variation structures in Manage All Inventory before changes affect their specific products.

6. Dropshipping Crackdown and Tracking Validation

The latest Amazon marketplace policy news makes clear that retail dropshipping is under increasing scrutiny. Amazon now validates tracking numbers instantly against carrier databases. Sellers who use workaround tracking methods to mask dropshipping sources face immediate account flags. Sellers who want to continue dropshipping must have a wholesale agreement and legitimate invoices to remain compliant.

7. Product Safety and Consumer Protection Improvements

Amazon has also made commitments on the product safety front. Following an evaluation by Consumer Reports that analyzed over 100 baby product listings across major digital marketplaces, Amazon committed to changes that improve safety information, disclosures, and recall transparency — with additional improvements expected to be implemented by the end of March 2026.

Separately, a $2.5 billion settlement regarding Prime enrollment practices resulted in millions of customers receiving refunds in late 2025 and early 2026. While this does not directly affect seller accounts, it signals that regulatory scrutiny of the platform remains high, which typically leads to tighter policy enforcement for sellers.

8. New Payout Schedule: Cash Flow Planning Required

Starting March 2026, Amazon implemented a new payout schedule, holding seller funds until seven days after delivery (DD+7) instead of the previous reserve period. The change aligns disbursements with confirmed deliveries, giving Amazon additional time to account for fees and adjustments. Sellers — especially those with longer shipping cycles or FBM orders — should adjust their financial planning to accommodate the temporary cash-flow impact.

What Sellers Should Do Right Now

The Amazon marketplace policy news for 2026 sends a clear message: the platform is rewarding professionalism and efficiency while raising the bar for compliance. Here are the key action steps every seller should take immediately:

  • Audit all third-party tools connected to your account and confirm BSA Agent Policy compliance.
  • Review your barcode and labeling strategy in light of the end of commingling on March 31, 2026.
  • Recalculate your margins with the new FBA fee structure applied to every SKU.
  • Document your manufacturing costs accurately to protect reimbursement recovery values.
  • Audit your variation listings before the May 31, 2026 review-sharing policy deadline.
  • Update your cash-flow forecasts to account for the new DD+7 payout schedule.
  • Keep your Account Health score above 250 for six months to qualify for the dedicated specialist protection that can prevent account suspension for minor issues.

The Amazon marketplace is evolving at a pace that demands active engagement. Sellers who stay informed and adapt quickly will find real opportunities in 2026 — those who don’t will find the costs adding up fast.