Purchase Approval
Purchase approval is the authorisation step where a designated approver reviews and sanctions a purchase before it can proceed to order.
Purchase approval enforces control over spending by requiring the right person to sign off before money is committed. Approvers check that the purchase is needed, budgeted, correctly specified and compliant with policy and pricing. Approval limits are usually tiered so that larger amounts require more senior sign-off, following the organisation's delegation of authority.
Automated approval workflows route requests to the correct approver based on value, category or cost centre, capturing decisions in an audit trail. Efficient approval balances control with speed — too many steps slow buying and encourage workarounds, while too few invite maverick spend. Clear rules and digital routing keep approvals fast without losing governance.
Frequently asked questions
- What is purchase approval?
- Purchase approval is the authorisation step where a designated approver reviews and sanctions a purchase — checking need, budget, specification and policy compliance — before it becomes an order.
- How do approval limits work?
- Approval limits are tiered thresholds set by the delegation of authority, so higher-value purchases require more senior sign-off while smaller ones can be approved locally.
Related terms
Approval Workflow
An approval workflow is the defined sequence of authorisations a purchase must pass through before it can proceed, based on rules such as value or category.
Read definitionDelegation of Authority (DOA)
Delegation of authority (DOA) is the documented set of spending limits that defines who in an organisation can approve purchases of what value.
Read definitionRequisition Approval
Requisition approval is the authorisation of a purchase requisition, confirming a need is justified and budgeted before a purchase order is raised.
Read definitionPre-Approval
Pre-approval is authorisation granted before a purchase is made, confirming in advance that a planned spend is sanctioned within set limits.
Read definitionExplore related across the knowledge graph
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