Amazon FBA IPI Roadmap: Your Next 90 Days Plan

This article provides a 90-day roadmap to improve your Amazon FBA inventory performance index (IPI) in 2026. You'll learn why IPI matters, how to evaluate your score, common pitfalls to avoid, and a step-by-step action plan to boost your storage efficiency and sales.

Why Amazon FBA Inventory Performance Index (IPI) Matters in 2026

Amazon FBA inventory performance index (IPI) is a critical metric that determines your storage limits and overall fulfillment efficiency. In 2026, as Amazon continues to tighten storage policies and prioritize fast-moving inventory, a healthy IPI score is no longer optional—it directly impacts your ability to stock bestsellers and avoid costly overage fees.

For cross-border e-commerce sellers, IPI affects not only your storage capacity but also your cash flow and customer satisfaction. A low score can lead to storage restrictions, forcing you to remove inventory or pay high surcharges. Conversely, a high score unlocks unlimited storage for high-performing ASINs, giving you a competitive edge in product selection and order fulfillment.

This guide provides a structured 90-day roadmap to assess, improve, and maintain your IPI score, with actionable insights tailored for online sellers and buyers navigating the Amazon ecosystem.

Key Components of Amazon FBA IPI: What You Need to Track

The IPI score is calculated based on four main factors: excess inventory, sell-through rate, stranded inventory, and in-stock rate. Understanding these components is essential for diagnosing your performance and prioritizing improvements.

Excess inventory measures the amount of stock sitting in fulfillment centers beyond a healthy sell-through window. Sell-through rate tracks how quickly your inventory sells relative to units available. Stranded inventory refers to items that are unable to be sold due to listing issues, and in-stock rate assesses your ability to keep popular products available.

• Monitor your excess inventory health: aim for a sell-through rate above 70% for most products.
• Check stranded inventory weekly: resolve listing errors to reclaim storage space.
• Track in-stock rate: maintain at least 80% availability for your top 20% ASINs.
• Use the Inventory Performance dashboard in Seller Central to see your score and breakdown.

How to Evaluate Your IPI: Criteria, Trade-offs, and Checks

Evaluating your IPI involves more than just looking at the number. You need to assess each component against benchmarks and understand the trade-offs between overstocking and stockouts. For example, overordering to avoid stockouts can increase excess inventory, while underordering may hurt your in-stock rate.

A practical approach is to set target ranges: for excess inventory, keep the percentage of units aged over 90 days below 10% of total units. For sell-through, calculate the average monthly sales and divide by current units to ensure a ratio above 0.7. Stranded inventory should be less than 5% of total units, and in-stock rate for top sellers should be above 90%.

Conduct a monthly audit: generate the Inventory Health report, review aging inventory, and use Amazon's recommended replenishment suggestions. Compare your metrics against category averages, but note that these are indicative and subject to change based on Amazon's policies.

• Use the 'Inventory Performance' page to see your score and component breakdown.
• Set a baseline: if your score is below 400, focus on excess inventory first.
• Calculate your sell-through rate: units sold / units available over 90 days.
• Review stranded inventory: ensure all listings have valid offers and correct SKUs.
• Test reorder strategies: use Amazon's 'Restock Inventory' tool for recommended quantities.

Common Pitfalls When Managing Your IPI Score

Many sellers make mistakes that inadvertently lower their IPI. One common pitfall is ignoring slow-moving inventory, leading to excess storage and fees. Another is overreacting to short-term sales dips by drastically cutting orders, which hurts in-stock rate and long-term sales.

Additionally, failing to remove stranded inventory quickly can tie up storage space. Sellers also often overlook the impact of seasonal products: holding too much seasonal inventory after the season ends can tank your score.

Avoid these pitfalls by setting regular review cycles, using automated tools for inventory alerts, and maintaining a buffer stock for top sellers. Always factor in lead times from manufacturers, especially for cross-border shipping, to avoid stockouts.

• Don't ignore excess inventory: create a removal order for items aged over 90 days.
• Avoid overordering based on optimistic projections; use historical data.
• Regularly audit your catalogs for listing errors that cause stranded inventory.
• Plan for seasonality: reduce order quantities before season ends.
• Set alerts for low in-stock rates using Amazon's inventory monitoring.

Your 90-Day IPI Improvement Plan

To systematically improve your IPI, break your efforts into three 30-day phases. In the first 30 days, focus on quick wins: remove excess inventory, fix stranded listings, and review your top ASINs' stock levels. This will immediately free up storage and improve your score.

In the second 30 days, optimize your replenishment strategy. Analyze sales velocity, lead times, and seasonal trends to adjust order quantities. Implement a reorder point system to maintain a healthy in-stock rate without overstocking.

In the final 30 days, refine your product selection and forecasting. Use Amazon's sales data to identify high-performing products and prune underperformers. Continuously monitor your IPI and adjust your inventory plan based on the latest metrics.

• Days 1-30: Run a full inventory audit, remove or dispose of aged stock, and resolve all stranded listings.
• Days 31-60: Implement a reorder point formula: (average daily sales * lead time) + safety stock.
• Days 61-90: Review product portfolio, discontinue low-sell-through items, and reallocate storage for high-demand products.
• Use Amazon's 'Inventory Planning' tools to automate calculations.
• Document your progress weekly to identify trends and adjust tactics.

Key Takeaways

Improving your Amazon FBA IPI is a structured process that requires continuous attention. By understanding the components, evaluating your metrics, avoiding common mistakes, and following a 90-day plan, you can enhance your inventory management and stay competitive in cross-border e-commerce. Start today by auditing your current IPI and implementing the quick wins outlined above. Remember, policies and benchmarks are indicative and subject to change, so regularly check Amazon's official updates.

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.