For many small and medium-sized enterprises, sustainability does not begin with a regulation.
It begins with an email from a customer.
A procurement team sends an ESG questionnaire. A lender asks about climate risk. A larger corporate customer requests Scope 1, 2 and 3 emissions data. A tender requires evidence of environmental management, labour practices or supplier due diligence.
The instinct is often to treat each request as a separate administrative exercise: find the available policies, ask finance for energy bills, estimate emissions, complete the form, and hope the next request looks similar.
That approach is understandable. It is also increasingly unsustainable.
The SMEs making the strongest progress are not waiting for a perfect, settled regulatory landscape. They are building a practical sustainability operating model: a small set of reliable data points, clear internal ownership, credible targets and one or two frameworks that match their commercial priorities.
The result is not necessarily a glossy ESG report. It is something more useful: a reusable evidence base that supports customer conversations, tender responses, financing, risk management and operational decision-making.
The shift: from reactive questionnaires to reusable evidence
The challenge for SMEs is not a lack of sustainability frameworks. It is choosing the right level of structure.
Large companies may have specialist reporting teams, dedicated software and assurance budgets. Smaller businesses generally do not. Their sustainability programme must be proportionate, commercially relevant and manageable alongside daily operations.
That is why the Voluntary Sustainability Reporting Standard for SMEs, or VSME, matters.
Developed by EFRAG, VSME is intended to give non-listed SMEs a proportionate way to report core environmental, social and governance information. It has been designed to help businesses respond more consistently to requests from larger customers, banks, investors and other stakeholders, without recreating the full complexity of large-company reporting.
For an SME, this can provide the backbone: a practical structure for gathering information on energy, greenhouse-gas emissions, workforce matters, governance and other recurring ESG topics.
But reporting is only one part of the picture.
A business facing climate-related customer demands may add an SBTi-aligned emissions-reduction commitment. A company working with multinational buyers may use EcoVadis to demonstrate supplier sustainability performance. A purpose-led business may turn to B Corp to embed environmental and social accountability across governance, workers, community, customers and environmental management.
The most effective SMEs do not adopt all four. They choose the combination that solves a real business problem.
Four frameworks, four business needs
1. VSME: creating a common ESG data foundation
VSME is particularly useful for companies receiving repeated requests for sustainability information from customers, lenders or larger corporate partners.
Instead of responding to each questionnaire from scratch, an SME can use the framework to create a core evidence pack: basic emissions data, energy use, workforce information, governance policies, key risks and relevant actions.
The advantage is not simply disclosure. It is consistency.
When one internal owner manages energy data, another manages people data and a third holds supplier information, a reporting structure can make gaps visible. It can also reduce the time spent recreating the same answer across different procurement portals and customer forms.
For many SMEs, this is the first meaningful step: not a full sustainability report, but a reliable and repeatable internal system.
2. SBTi: moving from carbon measurement to commitment
For businesses looking to demonstrate climate credibility, the Science Based Targets initiative offers a streamlined route for eligible SMEs.
The SME route is designed to make it easier for qualifying smaller companies to set and validate science-based emissions-reduction targets. It gives businesses a recognised framework for communicating their climate ambition while requiring a commitment to measure and reduce value-chain emissions.
Examples on the SBTi target dashboard show how this can work in practice.
Hytex Plastic CJSC, an Armenian packaging business, committed to reduce absolute Scope 1 and 2 greenhouse-gas emissions by 50.4% by 2032 from a 2024 base year. The company also committed to measure and reduce Scope 3 emissions.
100 Percent Group Limited has committed to reduce absolute Scope 1 and 2 emissions by 42% by 2030 from a 2022 base year, alongside measuring and reducing Scope 3 emissions.
These examples matter because they illustrate a practical shift. The companies are not claiming to have solved every value-chain challenge. They are making time-bound commitments, defining a baseline and acknowledging that indirect emissions need to be measured and managed.
For an SME, that is often where credible climate action begins.
3. EcoVadis: building supplier-market credibility
For companies selling into major supply chains, sustainability performance increasingly influences supplier selection, renewal decisions and commercial relationships.
EcoVadis is one of the most widely used sustainability-rating platforms in global procurement. Its assessment covers environment, labour and human rights, ethics and sustainable procurement.
For an SME, the commercial value lies in having a recognised assessment that can be shared across multiple customers rather than responding to every request from zero.
Gestion Credit Expert, a smaller French credit-management business, is one example. The company received an EcoVadis Gold Medal in 2019 with an overall score of 72 out of 100. EcoVadis highlighted the example as evidence that smaller service companies can use sustainability ratings to structure policies, collect supporting evidence and strengthen stakeholder confidence.
A rating is not a substitute for real performance. But it can create discipline: policies must exist, evidence must be available, and progress must be demonstrated.
4. B Corp: embedding sustainability into the business model
For SMEs seeking a broader model of accountability, B Corp certification provides a different route.
Rather than focusing solely on emissions or reporting, B Corp assesses performance across governance, workers, community, environment and customers. It can be especially relevant for businesses where sustainability is central to employer brand, customer trust, culture and long-term strategy.
Research into a Swedish craft brewery’s B Corp journey found that the certification process helped anchor sustainability across the company’s mission, practices, corporate form, certifications and internal capabilities.
That distinction is important.
A framework is most valuable when it changes how decisions are made. For some businesses, B Corp provides the structure to consider stakeholder impact alongside financial performance. For others, it may be more framework than they need. The point is fit, not prestige.
What successful SMEs do differently
Across these approaches, several patterns emerge.
First, successful SMEs focus on material issues. A manufacturer may prioritise energy, materials, waste, safety and supply-chain controls. A professional-services firm may focus on business travel, office energy, workforce practices, governance and procurement. A logistics business may focus on transport emissions, fuel, warehouse energy, refrigerants and subcontractor data.
Second, they assign ownership. Sustainability data cannot live only with a marketing team or one enthusiastic employee. Finance, operations, HR and procurement each hold part of the evidence needed to answer ESG questions credibly.
Third, they avoid overclaiming. A modest but evidenced climate target, a clear baseline and transparent explanation of next steps are more credible than broad claims of being “green” or “sustainable”.
Finally, they connect sustainability to commercial outcomes. The objective is not to collect certifications. It is to win and retain customers, manage risk, reduce costs, access finance and build resilience.
The practical question for SMEs
The question is not: “Which sustainability framework is best?”
It is: “Which framework will help us answer the requests we receive, improve the decisions we make and demonstrate credible progress?”
For many SMEs, the answer will be a simple combination:
Use VSME as a proportionate ESG data foundation.
Use SBTi when a credible climate target is commercially or strategically relevant.
Use EcoVadis when supplier ratings are requested by customers.
Use B Corp when a whole-business stakeholder model supports the company’s purpose and growth strategy.
The organisations that begin now will not necessarily have the most elaborate disclosures. But they will have something increasingly valuable: evidence they can use, trust they can demonstrate and a clearer route from sustainability ambition to commercial advantage.
Sources
EFRAG, SMEs and Sustainability Reporting: EFRAG
Science Based Targets initiative, Updated SME Definition and Fees: SBTi
Science Based Targets initiative, Standards and Guidance: SBTi
Science Based Targets initiative, Target Dashboard: SBTi
EcoVadis, Sustainability Ratings: A Great Opportunity for Small Companies: EcoVadis
Wiley, Can B Corp Certification Anchor Sustainability in SMEs?: Corporate Social Responsibility and Environmental Management