Source-to-Pay (S2P)
Also known as: S2P
Source-to-pay (S2P) is the complete procurement process spanning supplier sourcing and contracting through to purchasing, receiving and payment.
S2P joins the strategic front end — spend analysis, sourcing, supplier selection and contracting — with the operational procure-to-pay cycle that follows. Managing the whole flow in one system means the prices and terms negotiated during sourcing carry through automatically to the catalogues and orders buyers use every day.
The value of an integrated S2P view is compliance and savings realisation: contracted pricing is enforced at the point of ordering, spend stays on-contract, and analytics feed the next sourcing cycle. It is the model large procurement suites are built around.
Frequently asked questions
- What is source-to-pay?
- Source-to-pay is the full procurement process — from sourcing suppliers and negotiating contracts to purchasing, receiving and paying — managed as one connected flow.
- Why manage source-to-pay end to end?
- So negotiated prices and terms flow straight into everyday ordering, spend stays on contract, and purchasing data feeds back into the next sourcing round.
Related terms
Procure-to-Pay (P2P)
Procure-to-pay (P2P) is the end-to-end process that connects requisitioning and purchasing to receiving and paying for goods and services.
Read definitionStrategic Sourcing
Strategic sourcing is a structured, data-driven approach to sourcing that aligns supplier selection with long-term business goals rather than one-off purchases.
Read definitionContract Management
Contract management is the process of creating, executing, tracking and renewing supplier contracts to ensure both sides meet their obligations and value is realised.
Read definitionGo deeper
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