Overview

Amazon’s FBA Restock Inventory tool, accessible for free inside Seller Central, analyzes a seller’s sales history and supply‑chain preferences to produce restocking recommendations. Launched to help sellers keep shelves stocked without over‑investing in inventory, the tool tells you which products to replenish, how many units to send, and the optimal ship‑date. Mastering the tool can protect margins, avoid costly storage fees, and maintain healthy Amazon rankings.

Key Points

• Automated demand analysis — The system processes past sales velocity, seasonal patterns, and revenue projections to forecast future demand for each ASIN.
• Tailored shipment quantities — Recommendations factor in lead times, case‑pack minimums, and warehouse capacity, producing realistic unit counts.
• Dynamic restock timing — The tool calculates days of supply left and suggests ship‑dates that align with your chosen replenishment frequency.
• Customizable parameters — Sellers can modify frequency, lead‑time, case‑pack, and prep‑time settings to reflect real‑world supply‑chain changes.
• Risk mitigation — By balancing inventory levels, the tool helps reduce both long‑term storage fees and the loss of sales from stockouts.

How the Restock Inventory Tool Works

1. Data ingestion — The tool pulls the last 12‑month sales data for every active FBA SKU, including units sold per day, peak periods, and recent velocity shifts. Example: A seller of silicone kitchen mats sees a 40 % sales spike in July, which the tool records as a seasonal uptick.
2. Parameter application — Sellers input their replenishment cadence (weekly, bi‑weekly, monthly), shipping lead time (e.g., 5 days for domestic, 21 days for overseas), and case‑pack requirements (e.g., minimum 24 units per pallet). Example: A vendor who orders from China sets a 21‑day lead time, prompting the tool to push ship dates earlier than a domestic supplier would.
3. Forecast generation — Using the sales data and seller‑defined parameters, the algorithm projects future demand, calculates days of supply remaining, and determines the optimal quantity to send to each fulfillment center.