For many small and medium-sized businesses, carbon reporting has traditionally been seen as something that applies to large corporates only. In reality, that position is changing quickly. While mandatory requirements in the UK still apply primarily to larger organisations, market expectations are moving faster than regulation. Increasingly, SMEs are being asked to measure, understand and disclose their carbon footprint - not because they have to, but because their stakeholders expect it. For many businesses, the question is no longer “Do we need to report?” but “How do we do this in a practical and proportionate way?”
What Do We Mean by “Carbon Reporting”?
At its simplest, carbon reporting involves measuring and disclosing the greenhouse gas emissions generated by your business. This is typically broken down into three categories:
- Scope 1: Direct emissions (e.g. fuel use, company vehicles)
- Scope 2: Indirect emissions from purchased energy (e.g. electricity)
- Scope 3: Wider value chain emissions (e.g. suppliers, travel, waste)
For many SMEs, the immediate focus is on Scopes 1 and 2, with Scope 3 introduced over time as data and processes mature. The key is not perfection from day one, but establishing a robust, repeatable framework.
Why SMEs Are Being Drawn into Carbon Reporting
Even where there is no legal obligation, SMEs are facing growing pressure from multiple directions:
- Customers and supply chains
Larger organisations are under pressure to report their full value chain emissions (including Scope 3). As a result, they are asking suppliers to provide carbon data. - Banks and lenders
ESG considerations are increasingly built into lending decisions, with carbon data forming part of risk assessments. - Investors and stakeholders
Transparency around environmental impact is becoming a baseline expectation, even for privately owned businesses. - Reputation and competitiveness
Demonstrating environmental responsibility is now a differentiator in tenders, recruitment and client relationships.
In short, carbon reporting is becoming a commercial requirement, not just a regulatory one.
The Challenge for SMEs
Unlike larger organisations, most SMEs do not have in-house ESG teams or established reporting systems. Common challenges include:
- Uncertainty over what needs to be measured
- Difficulty accessing reliable data
- Concerns about cost and complexity
- Lack of clarity on which standards to follow
- Risk of producing disclosures that are incomplete or misleading
Without the right approach, carbon reporting can feel disproportionate to the size of the business.
Taking a Proportionate Approach
A well-designed carbon reporting process for SMEs should be:
- Practical – aligned to the size and complexity of the business
- Transparent – clear on assumptions and limitations
- Decision-useful – providing insight, not just compliance
- Scalable – able to develop over time
In most cases, this means starting with a baseline carbon footprint, supported by clear documentation and methodology. From there, businesses can refine, expand and integrate ESG into their wider strategy.
Why Getting It Right Matters
As expectations increase, so does scrutiny. Poorly prepared carbon disclosures can give rise to credibility risks with customers and stakeholders, create challenges in tenders or funding processes, expose businesses to greenwashing concerns, and lead to difficulties when moving towards independent assurance. By contrast, a clear and well-supported approach to carbon reporting can strengthen stakeholder confidence, support commercial opportunities, provide a solid foundation for future ESG reporting and assurance, and help identify efficiencies and cost savings.
A Connected, International Perspective
As a member of IR Global, we have access to a number of advisory firms across multiple jurisdictions on ESG-related matters. This provides us with insight into how carbon reporting expectations are evolving not just in the UK, but internationally - particularly where businesses operate across borders, form part of global supply chains, or are responding to overseas investor requirements. For clients, this means our approach is informed by both local regulatory developments and wider global best practice, ensuring reporting is robust and future-ready.
How We Support Our Clients
We work with businesses to develop clear, proportionate carbon reporting frameworks that meet current expectations while remaining practical to implement. Our support typically includes:
- Establishing an appropriate reporting boundary and methodology
- Calculating Scope 1 and Scope 2 emissions
- Advising on a phased approach to Scope 3
- Preparing clear and defensible disclosures
- Ensuring readiness for future assurance requirements
Our focus is on delivering reporting that is not only compliant, but credible, consistent and useful for decision-making.
Looking Ahead
Carbon reporting is rapidly becoming part of “business as usual” for SMEs. Those who take a structured and proportionate approach now will be better placed to respond to:
- evolving regulation
- increasing stakeholder expectations
- and the growing importance of ESG in commercial decision-making
If you would like to discuss how carbon reporting may apply to your business, or how to take a first step in a practical way, please get in touch with our ESG team.
Author, Rachel Patton - Business Development Manager
Rachel.Patton@arnoldhill.co.uk
