The True Cost of Stockouts: What the Data Reveals
How to use AskBiz low stock alerts, sales velocity data, and revenue metrics to calculate what stockouts are actually costing your business — and build a case for better reorder discipline.
Key Takeaways
- Every day a product is out of stock, you lose its average daily revenue — calculate this for your top 10 products.
- The AskBiz Low Stock filter shows you products approaching zero before they actually stock out.
- Customer lost sales (buying from a competitor) have a compound effect — frequent stockouts train customers to shop elsewhere.
- Daily revenue per product (annual revenue ÷ 365) × days out of stock = approximate cost of each stockout event.
Putting a KSh figure on your stock-outs
Most business owners feel the pain of a stock-out ('customers are asking for it and we don't have it') but can't quantify it precisely. AskBiz makes this calculation possible. For any product, go to the Sales Report and find its monthly revenue. Divide by 30 to get daily revenue. Multiply by the number of days it was out of stock. This is the direct revenue lost — not including the customers who went to a competitor and didn't return.
Case study: calculating the cost of one stockout
Basmati Rice shows 21.5 units in stock at the LOW threshold. Assume it sells 10 units per day at KSh 100 each — KSh 1,000 daily revenue. If it runs out for 3 days before a restock arrives, direct lost revenue is KSh 3,000. At 44% margin, lost Gross Profit is KSh 1,320. Additionally, 3 days × approximately 10 customers = 30 customer interactions where you couldn't serve them. Even if only 30% of those customers go to a competitor and don't return, that's 9 customers × KSh 400 average monthly spend = KSh 3,600 in long-term revenue risk.
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See this in action for your business
AskBiz tracks these metrics automatically — just connect your data and start asking questions.
Start for free →The cumulative cost across all low-stock products
The Overview currently shows 46 products in Low Stock status. If each of those 46 products generates only KSh 200 per day on average and each runs out for 2 days before restocking, the cumulative lost revenue is 46 × KSh 200 × 2 days = KSh 18,400. This is not a theoretical risk — it is a probable revenue impact in the next 2 weeks if no action is taken on the Low Stock list today. The Low Stock tab in Inventory is not a reporting feature — it is a revenue protection tool.
Building the case for better reorder discipline
If you have a team member responsible for stock ordering, share the stockout cost calculation with them. 'Last month we were out of Basmati Rice for 3 days — that cost approximately KSh 3,000 in lost sales and potentially 9 regular customers.' This converts an abstract 'we ran out of stock' conversation into a financial one. When the financial cost of a stockout is visible and specific, reorder discipline improves without requiring enforcement.
The right reorder threshold prevents stockout costs entirely
For your top 10 revenue products, set their reorder threshold in Inventory at 10–14 days of expected sales. At this threshold, the Low Stock alert fires while you still have time to place an order and receive stock before you run out. For products with 2-day delivery, a 3-day threshold is sufficient. For products that take 5 days from order to delivery, set the threshold at 7+ days. The investment in setting these thresholds correctly — 30 minutes per product — pays back every time a would-be stockout is avoided.