Inventory turns
How quickly inventory moves through a business relative to the amount held.
Inventory turnover commonly divides annual cost of goods sold by average inventory measured at cost. It indicates how often the average stock balance is sold or consumed during a period. Inventory days expresses a similar relationship in time.
Why it matters
Faster movement can reduce cash tied up, storage costs, spoilage, and obsolescence. But cutting stock too far can cause shortages, lost sales, production stoppages, or expensive emergency shipments. Different products need different replenishment policies.
A worked illustration
Illustrative: $1.2 million annual cost of goods sold and $200,000 average inventory imply six turns per year. On a 365-day convention that is about 61 inventory days. Seasonality can make a year-end snapshot misleading.
Where the idea can mislead
Using sales revenue over inventory at cost mixes valuation bases. High turns can reflect excellent planning or persistent understocking. Review availability and write-offs alongside the ratio.
Questions to ask
- Is the average stock balance representative of the year?
- Which items are slow, obsolete, or required for service?
- Does supplier reliability justify the safety stock?
Further reading
- Financial indicators to monitor — Business Development Bank of Canada
- What is working capital? — Business Development Bank of Canada
Definitions and examples are an editorial teaching synthesis. All example inputs are hypothetical. About our method.
Explore this idea in practice
- Food processingIngredients and finished food
Food processors turn agricultural commodities into ingredients and finished foods. Safety controls, recipe consistency, processing yield, shelf life, and retailer requirements shape the operating model.
- Grocery retailHousehold baskets
Grocery retailers turn supplier inventories into convenient household baskets. Their economics depend on stock availability, purchasing terms, product mix, labor productivity, and losses from waste or shrink.
- Wholesale distributionInventory and availability
Distributors bridge manufacturers and business buyers by holding inventory, extending credit and assembling reliable deliveries. Their value depends on availability and service relative to the capital and handling they consume.
From understanding to operating
Try this workflow with ERP.AI
Maintain the inventory records behind a turnover analysis: costed receipts, stock layers, location balances, physical counts, valuation adjustments, and period reconciliation.
2 Run it with Proto
Get the desktop agent, then return to the app page to continue setup.