The Procurement Glossary » Tail Spend
Tail Spend
Spend & Analytics
Definition
The large number of low-value transactions and suppliers that together make up a small share of total spend but a big share of effort.
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Explanation
Under the 80/20 rule, roughly 80% of suppliers deliver 20% of spend — the tail. It is disproportionately costly to process and often off-contract, making it a rich target for consolidation, catalogs and automation.
Example
The tail is 5,000 transactions under RM1,000 each — 4% of spend but 60% of POs.
Related terms
- Tail Spend Management — The practice of bringing the fragmented, low-value 'tail' of spend under control to cut cost and effort.
- Maverick Spend — Purchasing done outside agreed processes, contracts or preferred suppliers — 'off-contract' buying.
- Spot Buy — A one-off, ad-hoc purchase made outside any framework or contract, usually for an urgent or infrequent need.
- Supplier Consolidation — Reducing the number of suppliers in a category by concentrating spend with fewer, better-managed vendors.
Related concepts
- Tail Spend Management — Bringing the long tail of small, fragmented, low-value purchases under control through visibility, consolidation and catalog-driven self-service.
Frequently Asked Questions
What is Tail Spend?
The large number of low-value transactions and suppliers that together make up a small share of total spend but a big share of effort. Under the 80/20 rule, roughly 80% of suppliers deliver 20% of spend — the tail. It is disproportionately costly to process and often off-contract, making it a rich target for consolidation, catalogs and automation.
Can you give an example of Tail Spend?
The tail is 5,000 transactions under RM1,000 each — 4% of spend but 60% of POs.
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