Amazon IPI sourcing guide for cross-border sellers

This guide provides cross-border sellers with a practical understanding of Amazon FBA inventory performance index (IPI) in 2026. You will learn why IPI matters, how it is evaluated, common pitfalls to avoid, and actionable steps to improve your score and maintain healthy inventory levels.

Why Amazon FBA IPI Matters in 2026

The Amazon FBA inventory performance index (IPI) is a metric Amazon uses to measure how efficiently you manage your FBA inventory. A high IPI score (typically above 400) allows you to store unlimited units in Amazon fulfillment centers. If your score falls below the threshold, Amazon may impose storage limits, restricting the quantity you can send in—even if your products are selling well. This directly affects your ability to stock popular items, leading to potential stockouts and lost sales.

In 2026, Amazon continues to refine its inventory management policies. With rising storage costs and increased competition, maintaining a healthy IPI is crucial for cross-border sellers. A low IPI not only limits your storage but also incurs additional fees for excess or aged inventory. Conversely, a high IPI signals to Amazon that you are a reliable partner, potentially unlocking better terms and opportunities. For buyers, a seller with a good IPI is more likely to have consistent product availability and faster shipping times.

• IPI thresholds may change; always refer to the latest Amazon Seller Central announcements.
• Storage limits apply per product category and can vary by time of year (e.g., holiday peak).

Key Components of IPI: What You Need to Track

Amazon calculates IPI based on four key factors: excess inventory, sell-through rate, stranded inventory, and in-stock rate. Understanding each component helps you identify areas for improvement.

Excess inventory refers to items that are overstocked relative to demand, tying up capital and storage space. Sell-through rate measures how quickly you sell through your inventory over a given period. Stranded inventory includes items with listing issues that prevent them from being sold. In-stock rate tracks how often your popular products are available for purchase. Each factor contributes to your overall score, and Amazon provides a breakdown in your Inventory Performance dashboard.

• Excess inventory: Aim to keep levels low, but avoid understocking bestsellers.
• Sell-through rate: A higher sell-through rate (e.g., above 75%) positively impacts IPI.
• Stranded inventory: Regularly fix listing errors to keep products buyable.
• In-stock rate: Maintain high availability for items with steady demand.

How to Evaluate Your IPI: Criteria and Trade-offs

To evaluate your IPI effectively, monitor your score weekly via Seller Central. The score ranges from 0 to 1000, with 400 being the typical threshold for unlimited storage. However, the target may vary by category and time. For instance, during Q4, Amazon often raises the threshold to encourage tighter inventory management. Aim for a score above 450 to have a safety margin.

When evaluating, consider the trade-offs. For example, reducing excess inventory may involve discounts or removal orders, which incur costs. Increasing sell-through might require marketing spend. Balancing these factors requires analyzing your product lifecycle. New products may have lower initial sell-through but can become bestsellers. Use Amazon's 'Inventory Age' and 'Recommended Actions' to guide decisions. Remember, IPI is not a static number; it reacts to your actions over several weeks.

• Check your IPI score at least monthly; more often during peak seasons.
• Use the 'Inventory Planning' tools to see which items are hurting your score.
• Consider the cost of removal vs. long-term storage fees when dealing with slow movers.

Common Pitfalls When Managing IPI

One frequent mistake is overreacting to a low IPI by immediately sending massive removal orders. This can hurt your in-stock rate and lose sales. Instead, analyze which products are problematic and address them efficiently. Another pitfall is ignoring stranded inventory; even a small number of stranded units can drag down your score. Set aside time weekly to fix listing issues.

Also, avoid relying on seasonal spikes. A product that sells well during holidays may become excess afterward. Plan your inventory based on historical data and market trends. Additionally, many sellers forget to factor in lead times from overseas suppliers. If your restock arrives late, you may miss the sales window, hurting your sell-through rate. Always buffer for shipping delays.

• Don't sacrifice in-stock rate for a lower excess inventory score.
• Regularly review 'Stranded Inventory' reports.
• Use historical sales data to forecast demand, not just current trends.
• Account for supplier lead times and ocean freight variability.

Practical Recommendations and Next Steps

To improve your IPI, start by auditing your current inventory. Identify items with excess stock and create a plan to liquidate or promote them. For slow movers, consider running promotions or bundling with fast sellers. Improve your sell-through rate by optimizing product listings and using Amazon Advertising. Ensure all your listings are active and have accurate information to avoid stranded inventory.

Invest in inventory management software that integrates with Amazon to track stock levels and forecast demand. Set reorder points based on sales velocity and lead times. Regularly review your IPI dashboard and act on Amazon's suggestions. Finally, stay informed about policy changes by subscribing to Amazon seller newsletters. As of 2026, IPI thresholds and fees are subject to change; always check official announcements.

Next steps: 1) Log into Seller Central and check your current IPI score. 2) Download the 'Inventory Performance' report. 3) Identify your top three problem areas. 4) Implement one improvement action this week. 5) Monitor your score over the next month to see progress.

• Set a goal to maintain an IPI above 450 to avoid storage limits.
• Review Amazon's 'Restock Limits' page for your account-specific thresholds.
• Create a monthly inventory review calendar.

Key Takeaways

In summary, Amazon FBA IPI is a critical metric for cross-border sellers in 2026. By understanding its components, evaluating your score, and avoiding common pitfalls, you can maintain healthy inventory levels and avoid storage restrictions. Take proactive steps: audit your inventory, optimize listings, and use data-driven forecasting. Start today by checking your IPI score and implementing at least one improvement to see tangible results.

This article is compiled by kuajing168.cn for reference only. Please refer to the official announcements of each platform for the latest policies and rates.