What is an SME impact assessment?
An SME impact assessment doesn’t need to be heavy or technical to be useful. Most of the value comes from a structured conversation with the client: identifying which environmental, social and governance (ESG) impacts, risks and opportunities are relevant to their business, then recording those decisions in a way they can use afterwards.
This matters more than it used to. EcoVadis recorded almost 3,000 UK company sustainability assessments in 2024, a 34% increase on the previous year, with SMEs making up 84% of UK companies in its network. UK Sustainability Reporting Standards S1 and S2 were also issued in February 2026, creating a UK framework for sustainability-related financial disclosures. Even where SMEs do not face direct reporting requirements, sustainability information can still be requested through customers and supply chains.
Source: EcoVadis and UK Government
Accountants are well placed to help SMEs navigate this. Your role is to facilitate the conversation, ask the right questions and turn the client’s answers into something useful. You already have their trust, understand their business and know how to keep advice proportionate. You don’t need to be a sustainability expert to run an effective impact assessment.
A simple ESG impact assessment structure for SMEs
A practical SME impact assessment can use the standard Environmental, Social and Governance (ESG) framework. Each area can be approached in the same way: identify the impact, consider the risk or opportunity it creates, understand what the client is already doing and agree what they could do next.
Environmental
Start with the environmental areas most likely to affect the SME: energy and fuel use, waste, emissions and any exposure to environmental regulation or customer requirements.
For each one, discuss what’s happening now, whether action has already been taken and what a realistic next step looks like. Some impacts translate directly into cost: reducing energy use, for example, can lower bills. Others affect customer and supply-chain relationships. EcoVadis notes that sustainability assessments are often initiated by a buyer or strategic partner asking a supplier to demonstrate its sustainability performance.
Source: EcoVadis
Social
For most SMEs, the social side of an impact assessment centres on four groups: employees, customers, suppliers and the wider community.
Cover the same questions: what’s the current position, where could there be risk, what’s being done well and what could be improved? This is often the part clients find easiest because it reflects things they’re already doing informally, such as fair pay, safe working conditions or community involvement, but may never have documented.
Governance
Governance can sound technical, but for an SME it largely comes down to who makes decisions, who’s responsible when something goes wrong and how transparent the business is with employees, customers and partners.
Keep it proportionate. A five-person firm doesn’t need a board charter, but it should be able to explain who signs off important decisions and how issues are raised and resolved. Again, work through the current position, risks, opportunities and a realistic next step.
Turning an impact assessment into an action plan
Once all three ESG areas are covered, the value comes from pulling everything together. Organise the discussion into a short written record showing the impacts identified, which issues matter most and the actions agreed.
This doesn’t need to be long. A page or two clearly showing what was discussed and what happens next is usually more useful to an SME than a lengthy report they’ll never open again.
What does the client leave with?
By the end of the SME impact assessment, the client has something concrete: a clear record of their impacts, the decisions made around them and a short list of actions with some sense of priority.
This gives them something to refer to if a customer, lender or other stakeholder asks what they’re doing on sustainability. It also provides a foundation for whatever comes next.
An impact assessment isn’t necessarily a one-off exercise. Once priorities are documented, accountants can help clients work through their action plan, track progress and revisit the assessment as the business or its customer requirements change. This creates a natural route from one structured conversation into ongoing sustainability advisory support.
How to start using impact assessments with SME clients
Pick two or three existing clients who are already facing sustainability questions from customers or supply chains and offer them this conversation.
It doesn’t need a big pitch. Position it as a structured way to understand which sustainability issues actually matter to their business, document what they’re already doing and prepare for questions they’re increasingly likely to face.
Sources
EcoVadis (2025). UK Companies on the Sustainability Journey: EcoVadis Data Reveals Strengths, Gaps, and Opportunities for Growth.
https://resources.ecovadis.com/sustainability-impact/uk-companies-on-the-sustainability-journey-ecovadis-data-reveals-strengths-gaps-and-opportunities-for-growth
UK Government, Department for Business and Trade (2026). UK Sustainability Reporting Standards: UK SRS S1 and UK SRS S2. Published 25 February 2026.
https://www.gov.uk/government/publications/uk-sustainability-reporting-standards-uk-srs-s1-and-uk-srs-s2