KPI (Key Performance Indicator)

A measurable value used to assess whether a supplier is meeting contractual obligations. KPIs are agreed at contract award and tracked throughout the contract term to drive performance and accountability.

What a KPI Is

A Key Performance Indicator (KPI) is a quantifiable metric written into a public-sector contract to measure supplier performance against agreed standards. KPIs translate broad contractual obligations — delivery timescales, quality levels, customer satisfaction — into specific, trackable targets that both parties can monitor objectively.

How KPIs Are Set

KPIs should be defined during the procurement design phase and finalised before contract award, not retrofitted once delivery has begun. Effective KPIs follow the SMART principle: Specific, Measurable, Achievable, Relevant, and Time-bound. A poorly drafted KPI — one that is vague or impossible to evidence — creates disputes and undermines contract management.

Typical public-sector KPI categories include:

• Delivery performance — e.g., 98% of orders fulfilled within five working days
• Quality — e.g., defect or error rates below a defined threshold
• Availability/uptime — common in IT and facilities contracts, e.g., 99.9% system availability
• Customer satisfaction — e.g., minimum satisfaction score from end-user surveys
• Financial compliance — e.g., invoices submitted within agreed timescales

Contractual Weight

KPIs carry real contractual consequence. Persistent underperformance can trigger remediation plans, financial service credits (deductions from payment), or ultimately grounds for termination. Under the Procurement Act 2023, contracting authorities publishing above-threshold contracts on the central digital platform must also report on KPI performance, increasing transparency and public accountability.

The Cabinet Office's *Outsourcing Playbook* (updated 2021) recommends that KPIs are limited in number — typically five to ten per contract — so management effort focuses on what genuinely matters rather than generating data for its own sake.

Monitoring and Review

KPI data should be reviewed at regular contract review meetings — monthly or quarterly depending on contract value and risk. Authorities must retain sufficient in-house contract management capability to scrutinise supplier-reported figures rather than accepting them unchallenged. Where possible, KPI evidence should be independently verifiable or drawn from shared systems.

Common Pitfalls

• Setting too many KPIs, diluting focus
• Accepting supplier self-reporting without audit rights
• Failing to link KPI breaches to enforceable remedies
• Not revisiting KPIs when contract scope changes materially