ABC analysis is an inventory control technique that categorizes inventory items based on their importance, typically measured by annual consumption value (cost × usage). It follows the Pareto Principle (80/20 rule), which states that a small percentage of items account for a large percentage of the total inventory value.
Categories in ABC Analysis:
A items: Very important — constitute about 70–80% of the total inventory value but only 10–20% of the total items. B items: Moderately important — account for about 15–25% of the value and 30% of the items. C items: Least important — form only about 5–10% of the value but 50–60% of the total items.
This classification helps businesses focus control efforts where they matter most (on A items), allowing for better inventory management.