Discontinued lines and unsold inventory
Fabrice Decroo
Director of Consulting
August 17, 2026
End-of-line inventory and dormant inventory are two forms of the same problem: tied-up value that no one has explicitly decided to address. The latter is more dangerous because it is unforeseen.
Overproduction and unsold inventory result in an estimated loss of between $70 billion and $140 billion annually worldwide.
A product that is no longer selling doesn't always make that clear—it gets lost in the catalog's overall performance. Discontinued lines and idle inventory are two sides of the same problem: tied-up value that no one has decided to address.
Two causes, the same symptom
The end of a collection is predictable: a seasonal product or collection has a planned end date from the moment it is launched. The issue isn't whether remaining inventory will arrive, but rather predicting it and selling it off in a timely manner.
Dormant inventory is less predictable: an item that is supposed to sell at a normal rate gradually stops selling, with no planned end date—due to a purchasing error, a shift in trends, or new competition. It is identified later, precisely because no one was expecting it.
In both cases, the end result is the same: inventory that ties up capital and space without generating sales, and whose value only decreases over time.
The scope of the problem, in numbers
This is by no means a minor issue. According to the State of Fashion study by McKinsey & Company (BoF-McKinsey), overproduction and unsold inventory represent an estimated loss of value ranging from $70 billion to $140 billion annually worldwide—which, on an industry-wide scale, amounts to between 2.5 and 5 billion items produced each year that never find a buyer at full price.
estimated annual value loss due to overproduction and unsold inventory worldwide—between 2.5 and 5 billion items produced each year that cannot be sold at full price (McKinsey & Company, State of Fashion).
Industry data on dormant inventory—excluding fashion—point in the same direction: a significant portion—commonly estimated at between 20 and 30 percent—of the items in a typical retail catalog eventually becomes inventory with very slow or no turnover, without any explicit warning signal being automatically triggered.
Why does dormant inventory go unnoticed for so long?
- It gets lost in the average. An overall sales report by category may seem healthy, even though a handful of products are quietly dragging down the overall performance.
- No one is explicitly responsible for reporting it. Without an automatic alert threshold, detection depends on the individual vigilance of a category manager.
- It continues to appear in the available inventory metrics, with no distinction made between inventory that is turning over and inventory that is no longer moving.
How to Detect It Early
Set a rotation alert threshold
Set, by category, the number of weeks without a sale at which a product automatically triggers an alert.
Distinguishing Between a Planned End to a Collection and an Unplanned Deviation
A reference signal at the end of its planned lifespan follows its expected trajectory; a reference signal that is supposed to rotate normally but loses synchronization is a signal that must be handled differently.
Turn the alert into a decision, not just a report
A reference detected in dormant inventory must trigger an explicit decision—not just appear in a table that no one acts on.
Document the cause
Understanding why a reference became dormant helps prevent repeating the same mistake in the next collection.
Handling unsold inventory without unnecessarily destroying value
Once identified, dormant or end-of-line inventory has several possible disposal options, which should be prioritized rather than chosen at random: gradual markdowns on the main sales channel, transfer to a secondary channel or clearance outlet, tax-deductible donation, or destruction as a last resort. The order matters: each step must be attempted before moving on to the next—see also our article on the timing and depth of markdowns.
Before letting inventory sit around any longer
- Do I have an alert threshold that automatically detects items with no sales?
- Can I tell the difference between a planned end to a collection and an unforeseen deviation?
- Does every alert about dormant inventory trigger an explicit decision, or is it ignored?
- Have I prioritized my exit options before I need them in an emergency?
Frequently Asked Questions
The questions we're asked most often before getting started.
The end of a product line is planned from the moment the product is launched. Dead stock is an unforeseen deviation from a product that is supposed to sell at a normal rate, and it is more difficult to detect.
The threshold depends on the product category and its typical turnover rate: what is normal for a slow-moving product may be cause for concern for a product that is supposed to move quickly.
Not always: Transferring the inventory to another store or sales channel can sometimes clear it without a price reduction, before resorting to a markdown.
By documenting the cause of each detected case to adjust procurement decisions for the next collection.
Sources: McKinsey & Company, “The State of Fashion 2025” (BoF-McKinsey) — mckinsey.com · Booper product data (GENIUS Monitoring module, inventory turnover alerts).
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