Procurement: The Contract Type Allocates Risk
Scope clarity determines the contract type and who bears the risk.
- Fixed price — Higher seller risk, for a clear scope
- Time and materials — Shared risk, for a flexible scope
- Cost reimbursable — Higher buyer risk, for an uncertain scope
Procurement management handles acquiring goods and services from outside the organization via contracts. Contract types allocate risk between buyer and seller: fixed price puts the overrun risk on the seller and suits a clear scope; cost reimbursable pays actual costs plus a fee and suits an uncertain scope, so the buyer bears more risk; time and materials lies between them. Choosing the contract type follows scope clarity and who bears the risk.
Choosing fixed price for a vague scope. An uncertain scope suits a contract that reimburses actual costs.
Choose the contract by scope clarity and risk allocation.
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Procurement is the project bridge to its external suppliers, centered on choosing a contract type that allocates risk wisely. In a fixed-price contract, a set price is agreed for the scope, so the seller bears any overrun risk, best suited when scope is clear and stable. In cost-reimbursable contracts, the seller is paid actual costs plus a fee or incentive, so the buyer bears more risk, best suited when scope is uncertain or exploratory. A time-and-materials contract combines features of both and suits a small or flexible scope. Procurement success is not complete with choosing the contract alone, but with managing it: monitoring performance, controlling changes, and formally closing it upon fulfillment.
Frequently asked questions
What are the main contract types?
Fixed price, cost reimbursable, and time and materials.
Who bears risk in a fixed-price contract?
The seller, since they committed to a set price regardless of actual cost.
When do I use a cost-reimbursable contract?
When scope is uncertain or exploratory and hard to price up front.
What is a time-and-materials contract?
A contract combining features of both, suited to a small or flexible scope.
Does procurement end with choosing the contract?
No; it is followed by performance management, change control, and formal closure.