Tier 1 Supplier
A tier 1 supplier is a supplier that sells directly to the buyer, sitting at the first level of the supply chain.
Tier 1 suppliers are the organisations a buyer contracts with and receives goods or services from directly. They may themselves be manufacturers, distributors or assemblers who in turn rely on their own suppliers further upstream. Because tier 1 relationships are direct, they are usually where a buyer's contracts, performance management and day-to-day communication are focused.
Understanding the tiers matters because risk and cost often sit below tier 1. A reliable tier 1 supplier can still be exposed to problems at its own suppliers, so mature procurement functions seek visibility beyond the first tier for critical categories. Mapping which tier 1 suppliers depend on shared upstream sources helps reveal hidden concentration risk.
Frequently asked questions
- What is a tier 1 supplier?
- A tier 1 supplier is one that sells directly to the buyer, sitting at the first level of the supply chain, and is usually where a buyer's contracts and performance management are focused.
- Why look beyond tier 1 suppliers?
- Significant cost and risk often sit further upstream; a dependable tier 1 supplier can still be disrupted by problems at its own suppliers, so visibility into lower tiers matters for critical categories.
Related terms
Tier 2 Supplier
A tier 2 supplier supplies to the buyer's tier 1 suppliers rather than to the buyer directly.
Read definitionSupply Chain
A supply chain is the connected network of suppliers, manufacturers, logistics providers and buyers that moves a product from raw material to end user.
Read definitionSupplier Relationship Management (SRM)
Supplier relationship management (SRM) is the discipline of managing and improving relationships with key suppliers to maximise the value they deliver.
Read definitionSupplier Risk Management
Supplier risk management is the practice of identifying, assessing and mitigating the risks that suppliers pose to an organisation's operations, finances and reputation.
Read definitionGo deeper
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Operating model · diagram
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AI-first software
AI-first procurement software for long-tail spend
- 02
Live marketplace
A live B2B marketplace
- 03
Human services
Human sourcing and support
- 04
Optional add-on
Fulfilment support for merchants
