Amazon FBA

Three separate 2026 policy changes are hitting FBA sellers' margins and cash flow at once. DD+7 now holds seller funds for seven days after delivery instead of after shipment. Returns processing fees apply per unit once a product's return rate crosses its category threshold. And commingled inventory ended entirely on March 31, 2026, requiring most sellers to label every unit with an FNSKU barcode. None of these changes is catastrophic on its own, but modeled together, they ch

Most sellers calculate FBA profitability wrong. The math itself isn't the problem. The problem is an incomplete list of fees. Sellers account for fulfillment and referral fees, estimate their COGS, and arrive at a margin that looks workable. Then they launch, run the numbers three months in, and find that inbound placement fees, realistic storage costs, and advertising spend have compressed that margin past the point of viability. At that stage, fixing the problem is expensiv