Excess Inventory
Definition
Stock held above what is needed to meet forecast demand plus planned buffers over a defined horizon. It is inventory that current plans cannot justify, even if the item itself still sells.
In Practice
Excess is defined against a plan: if an item has 400 units on hand, sells 20 a week, and policy calls for 8 weeks of total coverage, roughly 240 units are excess. Common causes include forecast declines after purchases were committed, minimum order quantities far above demand, cancelled customer orders, and over-enthusiastic pre-builds.
Disciplined operations quantify excess monthly as part of an excess-and-obsolete review, aging it by how many months of supply it represents. Fresh excess has many exits, redeployment to other sites, supplier returns, promotions; stale excess has few, so speed matters. Left alone, excess migrates down the ladder to slow-moving, then dead stock, then write-off.
Example: a planner spots 30 weeks of supply on a phone case after the carrier cancels a promotion. Within the month she redeploys a third to a region still running the promo and negotiates a vendor return on another third, avoiding a markdown on all but the remainder.
Related Calculators
Related Terms
Stock that sells or is consumed at a much lower rate than expected, sitting in the warehouse far longer than average. It still has demand, unlike dead stock, but turns too slowly to justify its inventory level.
Dead StockInventory with no recorded sales or usage over an extended period and no realistic expectation of future demand. It occupies space and capital while generating no return.
Days of SupplyThe number of days current inventory will last at the expected rate of demand, calculated as on-hand quantity divided by average daily usage. It expresses stock levels in time rather than units or dollars.