Tail spend: what it is and how to control it

How to define your tail

There is no single rule. A common approach is to rank suppliers by spend and treat those making up the last 20% of spend as the tail. It is usually most of your supplier count. A spend analysis is the starting point.

Why tail spend costs money

• Prices paid are rarely compared or negotiated
• Processing cost per invoice can exceed the value bought
• Duplicate suppliers for the same items
• Weak supplier checks, which adds risk

Practical ways to control it

• Consolidate onto a few preferred suppliers or marketplaces
• Use catalogues and purchasing cards for low-value items
• Set approval thresholds that route small buys to agreed channels
• Review the tail every quarter and move recurring items into managed categories

Keep it proportionate

The aim is not to manage every supplier. It is to move repeat spend into agreed channels and make the rest cheap to process. Our supplier consolidation guide covers when fewer suppliers helps and when it adds risk.

How Caventis helps

Our tail spend management service covers analysis, supplier consolidation and the buying channels that keep tail spend controlled.

Frequently asked questions