Inventory KPIs Every Business Should Track (and How to Read Them)
Most businesses either track too few inventory metrics to catch real problems, or track so many dashboards that nobody actually looks at them. A short list of KPIs that connect to each other beats a long list that doesn't.
A handful of connected KPIs, reviewed weekly, generally drives more action than 20+ metrics reviewed once a quarter.
The five that matter most
Inventory turnover (how fast stock moves), stock coverage (days of inventory left), GMROI (return per dollar invested), stockout rate (how often you run out), and dead stock percentage (inventory that isn't moving). Each answers a different question, and together they cover almost every real inventory problem.
Why these five, and not more
Turnover and coverage both describe speed, but from different angles. GMROI adds the financial lens turnover alone misses. Stockout rate catches what GMROI and turnover can look fine while still hiding — lost sales. Dead stock percentage catches the opposite failure mode: capital that isn't moving at all. Together, they cover both "too fast" and "too slow" failure modes.
Signs your KPI setup isn't working
- You have a dashboard with 20+ numbers and can't say which 3 actually drive decisions
- Metrics are reviewed monthly or quarterly, by which point the window to act has passed
- No one can explain how any two of your KPIs relate to each other
- KPIs are tracked company-wide only, never broken down by category or SKU
A KPI you don't act on isn't a KPI — it's decoration on a dashboard.
How they work together
A product with high turnover but a high stockout rate isn't actually performing well — it's selling out because it's underordered, not because demand is perfectly served. A product with low GMROI but low dead stock isn't dead weight — it's just not returning much per dollar, which is a pricing or sourcing conversation, not a clearance one. Reading KPIs in isolation is where most misdiagnoses come from.
How to put this into practice
More metrics don't mean more insight if nobody reviews them regularly.
Frequency matters more than depth — small course corrections beat big quarterly fixes.
Turnover, GMROI, and stockout rate tell a fuller story combined than any one of them alone.
Key takeaways
Turnover, coverage, GMROI, stockout rate, and dead stock percentage cover almost every real inventory problem — read together, weekly, not as 20 isolated numbers reviewed once a quarter.
