Amazon IPI Score: What It Means & How to Improve It (2026)

Your Amazon IPI score (Inventory Performance Index) is Amazon’s way of grading how well you manage the stock you send to FBA. A healthy score shows Amazon you send the right amount of inventory, sell it at a steady pace and fix problems quickly. This guide explains what the IPI score means, where to find it, what drives it, how it relates to FBA capacity limits, and a step-by-step plan to improve it.

What Is the Amazon IPI Score?

The Inventory Performance Index (IPI) is a single score between 0 and 1,000 that summarizes how efficiently you use Amazon’s fulfillment network. Amazon recalculates it weekly. A higher score means your inventory is balanced: enough stock to keep selling, but not so much that it sits in the warehouse for months.

Amazon uses inventory performance to help decide how much FBA space it gives your account, so a weak score can mean less room to restock your best sellers, especially before peak season.

Where to Find Your IPI Score in Seller Central

1. Log in to Seller Central.
2. Go to Inventory → Inventory Planning.
3. Open the Inventory Performance view to see your current IPI score, the score history and the factors that affect it.
4. Check the same area for your FBA capacity limits and any overage warnings.

The 4 Factors That Drive Your IPI Score

Amazon doesn’t publish the exact formula, so treat these factors as the levers you control rather than a precise equation. For stranded units, follow the steps in the Amazon stranded inventory guide.

What Is a Good Amazon IPI Score?

There’s no permanent “good” number, because Amazon has moved the threshold several times. Based on Amazon’s own seller announcements:

Many 2026 seller guides still treat 400 as the line to stay above, but some report different numbers and Amazon can change it again. Use the target shown on your own Inventory Performance dashboard. In practice, aim to stay well above it rather than just over the line.

IPI Score and FBA Capacity Limits

On March 1, 2023, Amazon replaced its weekly restock limits and quarterly storage limits with a single monthly FBA capacity limit for each storage type, measured in cubic feet. Amazon says the limit depends on several inputs, including your IPI score, your sales forecast, shipment lead times and available fulfillment center space.

• If your on-hand inventory goes over your capacity limit, Amazon can charge capacity limit overage fees.
• A higher IPI won’t guarantee more space, but a low IPI is a common reason for tighter limits.
• Limits are confirmed for the next month and estimated for the months after, so plan shipments ahead.

How to Improve Your Amazon IPI Score: 7 Steps

1. Find your excess inventory. Use the inventory planning reports to list ASINs with more stock than you can sell soon.
2. Sell it down or remove it. Lower the price, add a coupon or deal, or create a removal or liquidation order. See Amazon removal order fees before you remove units.
3. Fix stranded inventory within days. Stranded units hurt your score and still take up space. Fix the listing error or relist the offer.
4. Improve sell-through on slow movers. Better main images, titles and keywords, plus small ad budgets, can speed up sales.
5. Keep best sellers in stock. Reorder early so replenishable products don’t run out.
6. Send smaller, more frequent shipments. Base each shipment on recent sales and lead time instead of sending months of stock at once.
7. Check your score every week. The IPI updates weekly, so small, steady fixes show up quickly.

A Weekly IPI Routine for Sellers and VAs

A steady weekly routine like this keeps small problems from turning into tighter capacity limits or extra fees.

Official sources: Amazon: New FBA capacity management system · Amazon Seller Forums: IPI threshold change to 450 · Amazon Seller Forums: Restock limits and IPI threshold changes

Frequently Asked Questions

What is a good Amazon IPI score?

There is no fixed number for every year. Amazon has used thresholds of 350, 400, 450 and 400 again, and many sellers aim to stay above 400. Check your Inventory Performance dashboard for the current target.

How often does the Amazon IPI score update?

Amazon updates the IPI score weekly, so changes you make to excess and stranded inventory can show up within a few weeks.

Does running out of stock lower my IPI score?

In-stock rate for replenishable products is one of the factors Amazon shows on the Inventory Performance page. Excess and stranded inventory are usually the bigger problems, so fix those first while keeping best sellers stocked.

Does a high IPI score give me more FBA storage?

Not automatically. Since March 2023, Amazon sets monthly capacity limits using several inputs, including IPI, your sales forecast and fulfillment center space. A low IPI often leads to tighter limits.

Do FBM orders affect my IPI score?

No. The IPI score measures inventory stored in Amazon fulfillment centers. Orders you fulfill yourself are not part of it.

Can a virtual assistant manage my Amazon inventory performance?

Yes. A VA can track your IPI weekly, fix stranded listings, prepare removal orders, plan shipments and flag excess stock before it becomes a problem.

Conclusion

Your Amazon IPI score is a weekly report card for how you manage FBA inventory. Keep excess and stranded inventory low, keep best sellers in stock and send stock in smaller, regular shipments. Check the score every week, use the threshold on your own dashboard, and you’ll protect your FBA capacity when it matters most.