Mastering Amazon's IPI Score & Restock Limits: Strategies for Healthy FBA Inventory

July 29, 2026 · Seller AI

Managing inventory on Amazon FBA can be complex, especially when dealing with the Inventory Performance Index (IPI) and restock limits. These metrics determine your ability to store and sell products, but with careful planning, you can optimize your IPI score and manage your inventory effectively.

Amazon's Inventory Performance Index (IPI) is a crucial metric that Amazon FBA sellers must monitor and maintain. The IPI evaluates your inventory management performance, taking into account factors such as sell-through rates, excess inventory, and in-stock performance. A high IPI score (above 400) allows for higher restock limits, which can be a game-changer for your business.

Understanding the IPI Score

The IPI score ranges from 0 to 1000, with a higher score reflecting better inventory performance. It examines the following areas:

• Sell-through Rate: Measures how quickly your inventory sells. A higher sell-through rate indicates efficient inventory management.
• Excess Inventory: Amazon wants your inventory to turn over. Having too much unsold inventory can lower your score.
• In-Stock Rate: Keeping products in stock is crucial. If customers can't consistently find your products in stock, your score will suffer.
• Storage Utilization: Amazon wants to see efficient use of storage space. Having empty space or not utilizing available storage can negatively impact your IPI score.

Key Factors to Improve Your IPI Score

Here's how to improve each of these factors:

• Sell-through Rate: Optimize your products' visibility and attractiveness. Use sponsored ads, promotions, and competitive pricing to boost sales.
• Excess Inventory: Regularly review your inventory to identify slow-moving items. Consider reducing prices or discontinuing these products to avoid tying up capital and warehouse space.
• In-Stock Rate: Utilize Amazon's inventory planning tools to forecast demand accurately. Adjust your restocking schedule to ensure products are available when needed.
• Storage Utilization: Evaluate your current storage needs and consider reducing the size of your shipments to better align with storage utilization.

Dealing with Restrictive Restock Limits

If your IPI score is below 400, Amazon may impose restock limits. Here's how to manage this:

• Prioritize High-Demand Items: Focus on replenishing your top sellers first to maximize sales and maintain customer satisfaction.
• Optimize Existing Inventory: Increase sales velocity of existing inventory to free up space for new products.
• Review Storage Fees: High storage fees can impact profitability. Regularly audit your inventory to avoid paying for unused space.

Forecasting Demand and Restocking

Forecasting demand is essential for maintaining a healthy inventory. Use historical sales data and seasonal trends to predict future demand. Regularly review your data to adjust your restocking strategy as needed.

Amazon also offers tools like the 'Restock Inventory' dashboard in Seller Central, which can help you monitor your inventory levels and plan restocking effectively.

How Seller AI's AI Agents Help

At Seller AI, our AI agents are designed to assist Amazon sellers in managing their FBA inventory health. By analyzing your IPI score and restock limits, our AI can suggest actionable insights to help you optimize your inventory performance, reduce storage fees, and maintain a steady flow of high-demand products. Our tools integrate seamlessly with Amazon's systems, providing you with a streamlined approach to managing your inventory and improving your IPI score.