Consultant or Software for Answering ESG Requests?

First, what you are not deciding. Since the Omnibus I directive (in force 18 March 2026), no small or medium-sized business (SME) reports under the Corporate Sustainability Reporting Directive (CSRD); that obligation sits with companies above 1,000 employees and €450 million turnover. What an SME faces instead is the ESG data request: a customer questionnaire, a bank’s ESG questions, a tender’s sustainability section.

The real question is how to answer those requests: handle them in-house, use software, or hire a consultant. This guide compares the realistic costs and trade-offs of each, and where a hybrid of the three works best.

1. Understanding the Job Before Choosing Who Does It

An ESG request from a large customer is bounded by EU law. Under the value-chain cap, what a CSRD reporter may require from a smaller supplier is capped at the VSME Standard (the Voluntary Sustainability Reporting Standard for SMEs, developed by EFRAG). See what the Omnibus changed for how this came about.

That bound matters for the buy-or-build decision. You are not producing a statutory CSRD report against the full ESRS framework; that is your customer’s job. You are producing a proportionate VSME-format report, or questionnaire answers drawn from the same data, and the effort should be priced accordingly.

The work itself is concrete: gather energy, workforce, waste, and governance data; turn it into VSME disclosures; and reuse those answers across every request that arrives. Our requirements checklist lists the underlying data.

2. Option A: In-House

Benefits

• Full control over your data, processes, and timing.
• Internal knowledge growth: the second request is far quicker than the first.
• Lower recurring costs once templates and routines are set up.
• Easier integration with finance and HR processes.

Typical costs (indicative)

VSME is voluntary and requires no assurance, so the review row is a credibility choice, not an obligation.

How to make it work

1. Start with the VSME Basic Module (B1–B11), which covers the core environmental, workforce, and governance metrics. Learn more about VSME Basic vs Comprehensive modules.
2. Use existing data from invoices, payroll, and HR systems.
3. Adopt software to extract data from energy bills and supplier invoices. Compare manual vs software approaches.
4. Scale gradually to the Comprehensive Module if a bank or customer asks for targets or climate-risk detail.

3. Option B: Hiring a Sustainability Consultant

Benefits

• Expert judgement on what a specific request does and does not require.
• Tailored policy and governance recommendations.
• Credibility with a demanding customer or lender.
• Time savings: consultants handle structure and drafting.

Typical costs (indicative)

For a task the law caps at a proportionate standard, consultant-led answering can cost more per year than the software route costs over several.

Drawbacks

• Dependency: the knowledge leaves with the consultant, and next year’s requests still arrive.
• Recurring cost: every new questionnaire or update can mean new fees.
• Variable quality: expertise and pricing differ widely across EU markets.

4. The Hybrid Model: Software Plus Targeted Advice

Many small businesses land on a hybrid: software for data collection and report generation, with a consultant brought in only for judgement calls, such as reviewing narrative disclosures or advising on an unusual customer demand.

This keeps ownership and cost control in-house while buying expertise only where it earns its fee.

5. What the Software Landscape Looks Like

Sustainability software falls into a few distinct categories, and matching the category to the job matters more than any single product choice:

For a small business, the proportionate middle path is usually a VSME-focused tool, with a spreadsheet behind it or replaced by it, rather than an enterprise platform built for obligations you do not have.

6. Decision Guide: Which Option Fits Best?

A reasonable default: start with internal ownership and software, then add a consultant only when a specific request raises questions you cannot settle yourselves.

7. Quick Wins Whichever Route You Choose

• Reuse your existing financial and HR data before collecting anything new.
• Begin with the VSME Basic Module; expand only when asked.
• Keep supporting evidence (bills, receipts, policies) filed and ready.
• Answer every questionnaire from one master dataset, so customers never receive conflicting figures.

8. Summary: Balancing Cost, Control and Confidence

For most small businesses answering ESG requests, software-first with consultant review where needed offers the best balance. Consultants remain valuable for judgement and unusual demands; they are an expensive way to do data entry.

Frequently Asked Questions

Is answering ESG requests in-house credible enough?

Yes. VSME is a recognised EFRAG standard, and a well-documented in-house VSME report answers most customer and bank requests. What builds credibility is consistency and documentation, not who typed the report. Compare manual vs software approaches for how tooling affects the workload.

When is a consultant worth it?

When judgement, not capacity, is the gap: a customer demands data beyond the VSME cap, a bank’s request touches climate-risk analysis, or your group structure makes scoping unclear. For routine questionnaires, consultant fees usually outweigh the benefit once your data is in order.

Can I combine in-house work with a consultant?

Yes, and many small businesses do. Software handles data collection and report generation; a consultant reviews narrative disclosures or advises on a specific demand. You keep ownership of the data while paying for expertise only where it changes the outcome.

What is the difference between SME tools and enterprise platforms?

Enterprise platforms are built for statutory CSRD reporting: full ESRS coverage, audit workflows, multi-entity consolidation, and pricing to match. SME-focused tools target the VSME scope, extract data from documents you already have, and skip the integration burden. Since no SME files under CSRD, the enterprise feature set is weight you do not need to carry.

Key Terms

• CSRD – Corporate Sustainability Reporting Directive (EU 2022/2464). Applies to large companies, not SMEs.
• VSME – Voluntary Sustainability Reporting Standard for SMEs (EFRAG). The capped format for supplier ESG requests.
• Basic Module – Core VSME disclosures (B1–B11) on environment, workforce, and governance.
• Comprehensive Module – Additional VSME disclosures (C1–C9), including targets and climate risks.
• Value-chain cap – The post-Omnibus rule capping what CSRD reporters may request from smaller suppliers at the VSME standard.
• ESRS – European Sustainability Reporting Standards used by CSRD reporters.

To compare the costs of these approaches for your own numbers, use the ROI calculator:

This tool helps you quantify the financial impact of each approach based on your company size and needs.