Fill Rate
What means Fill Rate?
Fill rate measures how many customer orders can be fulfilled directly from available stock.
Formula
(Fulfilled demand ÷ total demand) × 100
Example
950 out of 1,000 orders fulfilled immediately
→ Fill rate = 95%
Benchmarks
- > 98% → excellent
- 95–98% → good
- < 95% → critical
Significance
This KPI reflects a company’s actual ability to deliver.
Causes of poor Performance
- inaccurate forecasts
- low inventory levels
- delivery delays
- poor planning
Optimization
- better forecasting
- adjustment of safety stock
- closer supplier management
Typical Mistakes in Interpretation
👉 High availability can also indicate excessive inventory.
→ Must be combined with inventory turnover.
Relation to other KPIs
- backorder rate
- days of inventory
- forecast accuracy
Practical Example
Increase in fill rate from 92% to 97%:
→ significantly fewer customer complaints
❓ FAQ
What is the difference from on-time delivery?
Fill rate measures availability, not timing.
How often should I measure?
Regularly—ideally every day.
Conclusion
Inventory availability is a key KPI for delivery performance and customer satisfaction.