The cost of a stockout
A stockout is when a customer wants an item and you have none. The obvious cost is the lost sale, but the hidden cost is the customer who walks to a competitor and may not come back.
Stockouts matter because they quietly erode both revenue and loyalty. Unlike a write-off, a stockout never shows up as a line in your books — you simply never earn the money you could have.
If a popular SKU with a KES 1,500 margin stocks out for 4 days at a branch selling 15 a day, that is 60 lost sales and KES 90,000 of margin gone — none of it visible in any report. Worse, a handful of those 60 customers now shop elsewhere by habit, so the real cost runs past that one week.
Key takeaways
- A stockout is wanting an item you do not have.
- Costs are the lost sale plus lost customer loyalty.
- Stockouts never appear as a line in your books.
- Example: a 4-day stockout can quietly lose KES 90,000 of margin.