The Impact Evaluation Standard

The Impact Evaluation Standard (IES) helps organisations all over the UK
put a more tangible value on their social value activities


Aligned to comply
with PPN06/20

Fully aligned with UK government’s Social Value Model (PPN 06/20) and follows guidance from HM Treasury to make your data more easily received.


Proxy values to measure
financial value

130+ metrics, arranged in five different impact categories to help organisations measure and evidence the social value they generate. Updated yearly, with proxies from 2015-2024.


Created by a consortium
of social value advisors

Guided by an independent steering committee of recognised leaders from different sectors, with multi-decade experience in social impact valuation and delivery.

The Impact Evaluation Standard (IES) is a proprietary framework designed to help UK organisations measure and value their social value activities.

The Impact Evaluation Standard is a collection of metrics, proxy values and guidance documents designed in conjunction with a consortium of social value experts. It draws upon guidance from the UK government and a range of social value bodies and thought leaders.

The Impact Evaluation Standard is aligned to the UK government’s ‘Social Value Model’ and PPN06/20. In additional to these, the Impact Evaluation Standard includes a range of custom proxy values which allow organisations to convert the social impact they are creating into a financial value.

The Impact Evaluation Standard is commissioned by Thrive and governed by an independent Steering Committee.


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Impact Evaluation Standard User Guidance 2024

Sue Owen-Bailey

“Working with Thrive has been brilliant. They’re really passionate about what they do and the robustness of the Impact Evaluation Standard really gives us credibility with our clients, both in government and also in the private sector.”

Sue Owen-Bailey

Social Innovation and Sustainability Manager

Equifax UK

Sue Owen-Bailey

“It’s really important that we are able to lean into a framework like the Impact Evaluation Standard as a strategic supplier of central government. We really wanted that robust process that enables us to report our social value accurately so that we can be really confident in the data that we are providing. Not only are we able to report what we have already delivered, but we’re also able to anticipate or estimate exactly what we may be able to deliver for new contracts too.”

Sue Owen-Bailey

Social Innovation and Sustainability Manager

Equifax UK

Did you know?

Thrive is the only software platform accredited to use
the Impact Evaluation Standard

Learn More

Social Value Wording – a comprehensive glossary

Making sure you understand the language of social value means you can communicate more effectively about your own strategies.


What makes the Impact Evaluation Standard different?

Learn why there are various social value reporting frameworks in use and what makes the Impact Evaluation Standard the most robust, consistent and defensible, as well as being the framework shaping social value of the future.