Overview

Amazon will tighten its Fulfilled‑by‑Amazon (FBA) storage rules in mid‑2025, cutting the amount of inventory sellers may keep in Amazon warehouses and adding new fees that punish both excess and insufficient stock. The changes take effect on June 1, 2025, and will force sellers to revamp purchasing, forecasting, and supply‑chain processes to stay profitable.

Key Points

• Capacity cut to five months — Average storage allocations shrink from roughly six months of projected sales to five months, with some accounts seeing reductions of up to 75 %.
• ASIN‑level inbound caps reinstated — Sellers must now respect per‑SKU inbound limits instead of relying on a single aggregate ceiling.
• New surcharge at 26 weeks — Inventory that exceeds 26 weeks of supply triggers a daily surcharge designed to push sellers toward faster turnover.
• Long‑term storage fee starts at 271 days — The fee that previously began after 365 days now kicks in after 271 days, shaving almost three months off the grace period.
• Low‑stock penalty for under 28 days — SKUs with less than 28 days of inventory on hand will incur a penalty fee, discouraging stockouts.
• Prep‑service rates increased — Amazon’s bagging, labeling and other preparation services see higher pricing under the revised rate schedule.

What's Changing

1. Reduced allocation window — Amazon calculates each seller’s storage entitlement based on five months of forecasted sales. For example, a seller who previously could store 12,000 units (six‑month forecast) will now be limited to 10,000 units.
2. Re‑introduction of ASIN‑level limits — Each SKU receives its own inbound ceiling. A seller with 200 units of a fast‑moving toy may be allowed 150 inbound units, while a slower‑moving kitchen gadget might be capped at 30 units.
3. Excess‑inventory surcharge activation — Once a SKU reaches 26 weeks of supply, Amazon adds a surcharge of $0.15 per unit per day. If a seller holds 500 units of a seasonal item for 182 days, the surcharge could exceed $13,000 before the item sells.