Evaluation Task Force
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Major shift in government evaluation as Magenta Book is updated
The Evaluation Task Force has released the 2026 update to the Magenta Book, the government’s central guidance on evaluation. As the most significant revision in government evaluation standards since 2020, it marks a major milestone for evidence-based policymaking.
Guidance
Evaluation Accelerator Fund
The Evaluation Accelerator Fund (EAF) supports evaluation across government to transform our understanding of the impact of activity in priority policy areas.
News story
The Evaluation Registry: a new home for Government evaluation
In March this year, the Evaluation Task Force launched the Evaluation Registry: a website which will act as a single home for evaluations across Government.
News story
New Guidance for Evaluating the Impact of AI Tools
The Evaluation Task Force have recently published a new annex to the Magenta Book which covers best practice for impact evaluation of AI tools and technologies.
Guidance
Evaluation Task Force Strategy 2026-2029
The Evaluation Task Force’s 3-year strategy 2026-2029 to embed robust evaluation evidence into policy and spending decisions across government.
News story
Engine of Reform — Evaluation Task Force 2026 Conference champions evidence-led government
Civil service leaders, policymakers, and evaluation experts gather to discuss how government can learn from what works and use evidence to drive efficiency, effectiveness and innovation in public services.
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We are a joint Cabinet Office-HM Treasury unit providing specialist support to ensure evidence and evaluation sits at the heart of spending decisions.
ETF works with the Cabinet Office and HM Treasury.
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