INVENTORY PRIORITIZATION
80–20 rule
The 80–20 rule describes a pattern in which a relatively small share of causes produces a large share of outcomes. In logistics, it is a prompt to measure concentration, rather than a required numerical split.
80–20 RULE IN PRACTICE
- Choose the outcomeSelect picks, sales value or another defined measure.
- Calculate concentrationRank items and measure cumulative contribution.
- Target attentionApply a documented operational response.
Use the agreed units, actual records and approved procedures for your operation.
A WORKED EXAMPLE
20% of SKUs. 72% of picks.
A catalog contains 100 SKUs and records 10,000 picks during a defined month. Its busiest 20 SKUs account for 7,200 picks: 20% of the catalog produces 72% of picks. That is a useful concentration finding even though it is not exactly 80/20. The team may review those pick faces more often, while still protecting slow-moving parts that are essential to a customer or assembly.
WHAT THIS MEANS FOR YOUR QUOTE
Agree the requirement before comparing quotes
Use the actual shipment, stock and service requirements. Record the billing unit, included work and responsibility for exceptions.
Put this term to work. Use the 3PL selection guide to turn these operating requirements into provider checks, and the 3PL RFP guide to document evidence, responsibilities and exceptions.
A LITTLE MORE CONTEXT
Questions about 80–20 rule
Must the percentages equal 80 and 20?
No. They are a familiar approximation for unequal contribution, not a requirement.
Are A items always the fastest sellers?
No. ABC classes depend on the chosen ranking measure; value and movement frequency can differ.
Should low-ranked products be ignored?
No. Consider service importance, stockout impact and obligations as well as the ranking.
Source & example notes
Oracle: overview of ABC analysis.
Sources provide background on the linked topic. Product documentation describes a particular implementation; confirm the rules, contract and procedures that apply to your operation.
Quantities, costs and scenarios are illustrative, not operating targets, approved handling instructions or guarantees. Source guidance reviewed 22 October 2026.
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