Overview

Amazon is rolling out a major change to how seller-fulfilled (FBM) refund processing works, shifting from a 2 business day window to a 4 calendar day deadline for issuing refunds after receiving returned items. While the numerical increase may seem like extra breathing room, the switch from business days to calendar days introduces new operational demands, particularly around weekend and holiday processing. The updated policy takes effect on January 26, 2026, and carries strict penalties for sellers who miss the deadline, including automatic buyer refunds and the potential loss of SAFE-T claim eligibility.

Key Points

• Extended but restructured timeline — Sellers now have 4 calendar days instead of 2 business days to process refunds after receiving an FBM return, but weekends and holidays now count toward the deadline.
• Automatic refund enforcement — Amazon will automatically issue refunds to buyers if sellers fail to act within the 4-day window, with sellers absorbing the financial loss in most cases.
• SAFE-T claim restrictions — Sellers who miss the refund deadline will generally lose eligibility to file SAFE-T claims to recover funds, with narrow exceptions for returns that were never physically received.
• Grade and Resell Workflow emphasis — Amazon is actively encouraging sellers to use its Grade and Resell Workflow (GRW) to document inspections, apply restocking fees, and protect reimbursement rights.
• Scope limited to certain FBM returns — The new rules apply only to FBM returns without prepaid labels where Refund at First Scan (RFS) is not triggered, leaving existing RFS processes unchanged.

The Calendar Day Shift Creates New Operational Pressure

• Not just more time — The headline change from 2 business days to 4 calendar days initially sounds like sellers are getting more time, but the reality is more nuanced.
• Weekend impact — Under the previous system, a return received on a Friday gave sellers until the following Tuesday to process the refund, since weekends were excluded. Under the new policy, a return received on a Thursday would require action by Monday, cutting into what was previously protected weekend time.