What is Supplier Segmentation?

Not all suppliers are equally important, and they should not all receive the same level of attention. A business might have 50 active suppliers, ranging from the office supplies vendor to a specialist IT provider running critical infrastructure. Spending the same amount of time managing each relationship is inefficient. Supplier segmentation provides a framework for allocating management effort where it matters most.

The most widely used framework is based on the Kraljic matrix, simplified for practical use. It maps suppliers on two dimensions: the value of what you buy from them (annual spend) and the risk or complexity of replacing them (supply risk). This produces four categories.

High spend, high risk: these are your strategic suppliers. They provide critical goods or services and switching to an alternative would be costly or disruptive. Examples include your primary IT infrastructure provider, a specialist raw materials supplier, or a sole-source component manufacturer. These relationships require active management, regular performance reviews, and careful contract negotiation.

High spend, low risk: these are your leverage suppliers. You spend significant amounts with them, but alternatives exist in the market. Examples include general office suppliers, standard cleaning services, or commodity materials. Here, the focus should be on competitive pricing through periodic tendering or benchmarking.

Low spend, high risk: these are bottleneck suppliers. You do not spend much with them, but they provide something that is hard to source elsewhere. A niche software tool or a specialised subcontractor might fall here. The priority is ensuring supply continuity, perhaps through backup supplier identification or holding safety stock.

Low spend, low risk: these are routine suppliers. Standard catalogue purchases, basic consumables, and commodity services. These can be managed with minimal effort through fixed-term contracts with automatic renewal. The administrative cost of actively managing these relationships often exceeds the potential savings.

For most SMEs, mapping suppliers into these four categories takes an afternoon and immediately clarifies where to focus. The top five suppliers by annual spend typically account for 60 to 80 percent of total procurement value. Those are the relationships that deserve active management.

Bain and Company research shows that 43 percent of total business costs consist of external procurement. For most SMEs, supplier spending is the single largest cost category after payroll. Yet many businesses manage their largest supplier the same way they manage their smallest: reactively, with no structured evaluation or negotiation cadence.

Supplier segmentation corrects this imbalance. By identifying which five or ten suppliers account for the majority of your spend and risk, you can focus your limited management time where it produces the greatest return. A five percent improvement negotiated with your top three suppliers will save more than a twenty percent discount from your smallest vendor.