IPI Score
Inventory Performance Index - Amazon's 0-1000 score for how efficiently a seller manages FBA stock. A low score can cap storage limits. The score factors in excess inventory, sell-through rate, stranded inventory, and in-stock rate - it's Amazon's way of discouraging sellers from using its warehouses as long-term storage.
In practice
The score factors in excess inventory, sell-through rate, stranded inventory, and in-stock rate - it's Amazon's way of discouraging sellers from using its warehouses as long-term storage. Falling below Amazon's minimum threshold can trigger FBA storage limits until the score recovers.
A seller who overordered holiday stock that didn't sell sees their IPI score drop the following quarter, and gets capped on how much new inventory they can send in.
Why it matters
A capped storage limit from a low IPI score can directly cause stockouts during a business's busiest season, since there's often a lag between fixing the underlying issue and the score - and the limit - recovering.
Worth knowing
- Recalculated weekly, factoring a trailing window of performance rather than a single snapshot.
- Excess inventory and stranded inventory are usually the two biggest drags on the score.
- Amazon publishes the current minimum threshold in Seller Central - it has changed over time, so it's worth checking rather than assuming.
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Tell us where things stand with putting ipi score into practice and we'll respond with next steps, no forms, no waiting in a queue.
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