Overview

On January 15 2026 Amazon replaced its seasonal Q4 surcharges with permanent FBA fulfillment fee hikes. Amazon markets the change as an average increase of $0.08 per unit, but the real effect depends heavily on product price and size tier. Sellers whose items sit in the $10‑$50 range see the sharpest margin erosion, while new inventory‑level penalties and shipment‑defect fees add further cost pressures.

Key Points

• Small standard‑size items ($10‑$50) — Fee rises by $0.25 per unit, the largest percentage jump for any tier.
• Large standard‑size items ($10‑$50) — Fee climbs $0.05 per unit, still material when volumes are high.
• Products over $50 — Fee climbs $0.31 per unit; higher absolute cost but usually absorbed by stronger margins.
• Products under $10 — Small‑size items see a $0.12 increase; large‑size items face no change at all.
• Low‑inventory charge — Now assessed per individual FNSKU rather than per parent ASIN, turning each variation into a separate liability.
• Shipment‑defect penalty — Flat $0.60 charge for any late, lost, or misrouted shipment, directly affecting 3PL‑reliant sellers.

How the New Fee Structure Works

1. Revised fulfillment rates — Amazon applies a higher per‑unit fee based on size tier and price band.

   • Example: A 12 oz, $15 small‑standard product that previously cost $2.30 per unit to fulfill now costs $2.55, adding $0.25 per sale.

2. FNSKU‑level inventory assessment — Low‑inventory fees are calculated for each unique FNSKU.

   • Example: A shirt offered in five colors and four sizes generates 20 FNSKUs; if the “red‑large” SKU falls below the safety stock threshold, a fee is levied even though the overall shirt inventory is healthy.

3. Flat shipment‑defect surcharge — Any fulfillment error triggers a $0.60 charge.

   • Example: A seller ships 1,000 units through a third‑party logistics provider (3PL) with a 2 % error rate; 20 defective shipments generate $12 in fees each month, or $144 annually.