Optimizing Amazon IPI Score and FBA Inventory: A Guide for Sellers

July 23, 2026 · Seller AI

As an Amazon seller, maintaining a healthy inventory is crucial for business success. The Inventory Performance Index (IPI) score, a metric introduced by Amazon, plays a significant role in managing FBA inventory and determining restock limits.

Amazon’s Inventory Performance Index (IPI) is a score that reflects the health of your inventory on the platform. It measures your performance in areas such as sell-through, in-stock rate, excess inventory, and product variety. A high IPI score means Amazon considers your inventory management practices efficient, which can lead to higher FBA storage limits and more visibility for your products.

Understanding the IPI Score

Amazon calculates the IPI score on a scale of 0 to 1000, with 1000 being the highest. The score is updated monthly, and it affects your ability to maintain and grow your FBA inventory. The IPI score is based on four key areas:

• Sell-through: This measures the percentage of your inventory that is sold. The higher the sell-through rate, the better your score in this area.
• In-stock rate: Amazon evaluates how often your inventory is available for purchase. A higher in-stock rate contributes positively to your IPI score.
• Excess inventory: Amazon calculates how much inventory you have that hasn’t moved for 90 days or more. Reducing excess inventory can improve your IPI score.
• Product variety: Having a diverse range of products can help you achieve a high IPI score. Amazon encourages sellers to offer a wide variety of products to meet different customer needs.

Improving Your IPI Score

To increase your IPI score, focus on these strategies:

• Optimize inventory levels: Ensure you have enough inventory to meet customer demand, but avoid overstocking. Use tools like Amazon’s inventory planning to manage your stock levels effectively.
• Reduce excess inventory: Monitor slow-moving items and consider strategies such as discounts, promotions, or liquidation to clear out excess inventory.
• Maintain a high in-stock rate: Regularly review your inventory and adjust your restocking schedule to keep your products in stock and available for customers.
• Expand product offerings: Diversify your product range to appeal to a broader customer base and improve your IPI score.

Managing FBA Restock Limits

Amazon imposes FBA restock limits to manage warehouse capacity and maintain a high level of service. If your IPI score falls below a certain threshold, your storage limits will be reduced, limiting your ability to restock your inventory. Here’s how you can manage FBA restock limits:

• Monitor your IPI score: Keep an eye on your IPI score and take action to improve it before it impacts your restock limits.
• Forecast demand accurately: Use sales data and market trends to forecast demand accurately and plan your inventory accordingly.
• Utilize Amazon’s tools: Amazon offers tools like the Inventory Performance dashboard and the Repricing Recommendations feature to help you manage your inventory effectively.

The Role of Seller AI

At Seller AI, our AI agents are designed to help Amazon sellers optimize their inventory management and improve their IPI score. Our AI-powered solutions monitor your inventory levels, predict demand, and provide actionable insights to help you maintain a healthy FBA inventory. By leveraging our AI capabilities, you can focus on growing your business while we manage the intricacies of your Amazon inventory.