Everyone agrees. Nobody counts.
Put a number on the sales you never made.
The maths isn't complicated. A store sells four a day when the product is there. It sat at zero for four days. Sixteen units gone at full price. Repeat that across the SKUs that carry your month.
One SKU, one store
Counted lossConfirmed unavailability gets calculated. Nothing here is a guess.
Every hand goes up. Nobody has the figure.
Ask any room of retailers if stockouts cost them sales. Every hand goes up.
Ask how much last month. The room goes quiet.
The data to answer already sits in your systems. Stock history and sales history, side by side.
It has just never been read that way.
The gap between "we know" and "we measured" is where the month goes.
Worldwide, retailers run at roughly 8.3% out of stock and lose about 4% of annual sales to it (Gruen and Corsten). Your number is different. That's the point: it's YOUR number, and it's computable from data you already own.
Which SKUs, which stores, how many days, at your margins.
Read only, on your scope
Reads stock and sales for the scope you point it at. Read only.
Every zero, found
Finds every SKU that went to zero, in which stores, for how many days.
Valued at your prices
Values the gap at that store's own selling rhythm and your sellable price, not a company average.
Ranked, so you can act
Ranks the result so you fix the few that matter first.
What comes back on one category.
Read only analysis
SampleThe figure we put on your screen.
Illustrative sample, not a client result. The lost sales figure is calculated from your own stock and sales history, at your own prices.
What you are thinking
“We already know stockouts hurt us.”
What the shelves say
Knowing isn't a figure. Until the loss has a number, it can't be ranked against the levers you already pay for, and it loses every budget argument by default.
If the number turns out small, you win. If it's big, you finally know where the month went.
Where these numbers come from.
4 to 8%
Sales uplift measured when retailers fix inventory accuracy. ECR Retail Loss study across seven European retailers (Glock, Rekik and Syntetos, 2019).
8.3%
Average out of stock rate worldwide, costing roughly 4% of annual sales (Gruen, Corsten and Bharadwaj, 2002).
Works with the ERP you already run.
Next
Once the loss has a figure, it belongs on the screen where the arguments happen: the number missing from your monthly review
Want the number before you commit to anything?
Fifteen minutes to scope it: one category, read only, your margins. If the number is small, you've lost nothing but a coffee.
Or start from the data side: Get the free inventory accuracy audit