About this video
In this video, we share our views on the recent changes that Amazon made in inventory management rules. Learn what is the new threshold for IPI index (500) and how to reach it; why having it at 500 is not going to ensure you to have as much stock as you want; and what is the general direction in which Amazon wants to take the US marketplace with these changes. 1) remove excess inventory with their offer to make free removal orders 2) improve sell-through metric through conversion rate improvement 3) fix the stranded inventory metric through either through relisting, creating removal orders, or creating new listings 4) improve the in-stock rates through careful inventory management
We will also cover some tips on finding good workarounds for Q4 inventory restrictions in our next video with Orion Avidan.
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Transcript
Frequently asked questions
What is the Amazon Inventory Performance Index and why does it matter?
The Inventory Performance Index, or IPI, is a score Amazon assigns to FBA sellers to measure how efficiently they are managing their fulfillment center inventory. It is updated weekly and ranges from zero to one thousand. A score below the minimum threshold results in storage capacity limits being placed on your account, which can restrict how much inventory you are allowed to send into Amazon's warehouses. This becomes a serious problem during Q4, when you need the most storage capacity at exactly the time Amazon penalizes accounts with low scores by restricting it.
What four factors make up the IPI score?
Amazon's IPI is influenced by four metrics. Excess inventory percentage measures how much of your FBA stock has been sitting for over 90 days relative to forecasted demand. Sell-through rate measures the ratio of units sold over the past 90 days compared to your average inventory levels during that period. Stranded inventory percentage reflects inventory in Amazon's fulfillment centers that has no active listing and therefore cannot be sold. In-stock rate measures how consistently your top-selling products are available for purchase. Amazon does not publish its exact formula, but these are the four publicly stated factors.
What is stranded inventory and how do I fix it?
Stranded inventory is stock that is physically present in Amazon's fulfillment centers but not attached to an active, sellable listing. It can become stranded due to a listing error, a compliance issue, a suppressed listing, or inventory that was sent in without a corresponding active ASIN. You pay storage fees on stranded inventory without being able to sell it, which damages both your IPI score and your profitability. The fix is straightforward: check the stranded inventory report in Seller Central regularly, relist the affected products if possible, or create a removal order to get the inventory back and clear it from the system.
How can I improve my sell-through rate to boost my IPI score?
Sell-through rate improves when your inventory moves faster relative to how much you hold. Practical levers include improving your listing's conversion rate through better images, copy, and pricing; running promotions or coupons to accelerate sales; bidding on your own product pages through product targeting to prevent competitors from diverting buyers away; and reducing the quantity you send into FBA so that existing inventory represents a smaller proportion of what you hold. Sending only 30 to 60 days of supply at a time is a common approach to keeping sell-through in a healthy range.
Does a high IPI score guarantee that Amazon will not limit my storage capacity?
Not entirely. Amazon introduced ASIN-level quantity limits that apply independently of your IPI score. This means that even an account with a strong IPI score can have storage limits placed on specific products based on Amazon's own demand forecasting for those ASINs. The IPI score is one layer of the system and worth maintaining for overall account health, but sellers should monitor their individual ASIN-level capacity limits separately and plan their inbound shipments around both constraints.
What should I do with excess inventory that is dragging down my IPI score?
The fastest fix is a removal order, which brings the inventory back to you rather than letting it continue to sit and accumulate storage fees. If the inventory is still sellable but slow-moving, options include a temporary price reduction, a coupon or promotion to accelerate sell-through, expanding your keyword targeting to surface the product in front of new audiences, or considering whether the product can be repositioned for a different use case or audience. If none of those approaches are viable, Amazon's liquidation program allows you to dispose of inventory at a fraction of cost rather than paying indefinite storage fees.
