ESG Advisory Services
By vaayaa Editorial Team · Subject panel: Dr. Ananya Iyer (PhD, Management Studies), Oluwaseun Adeyemi (MBA, Strategic Management)
ESG advisory helps organizations plan, report on and improve their environmental, social and governance performance, and it is sold by consultancies, accounting networks, rating-support firms and membership bodies [1][2]. Competence comes from learning the frameworks, following a repeatable method and producing usable documents.
Key takeaways
- ESG advisory covers strategy, disclosure, climate and supply chain risk, and rating support, and it serves companies, financial institutions and membership organizations [1][3][4].
- Regulation and investor expectations drive most demand, but the same rules can limit which firms may advise and rate the same client [2][5].
- Published market size figures differ widely, so check the scope and definition behind any number before you rely on it [1][6][7][8].
- A learner can build competence through a fixed sequence: frameworks, market sounding, materiality, service design and tracking [9][10].
- The economics of the work are fragile in many settings, so the ability to design a paid package matters as much as technical knowledge [11][12].
ESG advisory is the work of helping an organization understand how environmental, social and governance factors affect its operations, risks and reporting, and then acting on that understanding. One market report describes it as strategic, compliance and implementation services that professional service firms provide to businesses, financial institutions, governments and non-profit organizations [1]. The advisor's job is to help clients identify, manage, disclose and improve performance in those three areas [1].
The field has moved from awareness to operations. One industry commentary describes a shift from frameworks and ratings toward the question of whether the advisory business itself can earn durable revenue [11]. That tension shapes the work. Good practitioners need real depth in disclosure rules and a way to price and deliver their time [11][12].
This discourse explains what the work involves, the knowledge it draws on, the methods and tools used, where it is applied, what the job market looks like, where the regulatory and delivery risks lie, and how a learner can build competence step by step.
What ESG advisory covers and who buys it
ESG advisory sits between outside pressure and an organization's daily decisions. Environmental, social and governance factors affect costs, access to capital and reputation, and the advisor helps the client understand those effects and act on them. Sources describe the core purpose as identifying risks and opportunities and turning them into improvement plans that meet international standards [1][6].
The buyers are varied. Listed companies need disclosure support, financial institutions need help with sustainable finance, and membership organizations design services for their own members. The ILO guide for employer and business membership organizations describes practical, step-by-step support to design and deliver tailored services, with a strong focus on small and medium-sized enterprises [10]. Firms also buy this work when new reporting duties arrive [2].
Fact A market report lists Deloitte, PwC, EY, KPMG, Accenture and McKinsey among the companies covered in its study of this market [13].
The work is distinct from ratings and assurance. Advisors design strategy, run gap analyses and write reports. Assurance providers test whether reported data holds up, and rating firms score performance [8][14]. Keeping these roles separate is one of the main design questions in the field.
Core knowledge areas: reporting, strategy, governance and ratings
Competent advisors work across four knowledge areas. Each area uses different standards, so a learner should map them early. One advisory firm names the CSRD and ESRS, the EU Taxonomy, SFDR, GRI, TCFD and ISSB as frameworks it works with [3]. Another names the ESRS in Europe, the TCFD, the TNFD and the ISSB internationally [15].
Reporting and disclosure
Much of the work starts with a materiality assessment, which identifies the issues that matter most to a company and its stakeholders. Advisors then run a gap analysis and prepare the report [3]. Some firms also review existing reports and benchmark them against peers [16].
Strategy and governance
KPMG describes governance work that covers sustainability strategy, board composition, committee structure, the role of internal audit, executive compensation and integration with enterprise risk management [17]. Advisors pair these reviews with policy development and implementation guidance [17].
Climate, supply chain and ratings
Advisors also handle carbon footprinting, life cycle assessment and transition planning [4]. One firm describes help with emerging risks, costs and processes in climate change, green finance, labor rights, supply chain and environmental management [18]. Some firms also help clients secure scores from rating agencies such as CDP, EcoVadis, Sustainable Fitch, S&P and Sustainalytics [19].
Source: vaayaa analysis of cited data
View chart data
| Starting value | 11.9 USD billion |
| Intermediate value | 13.56 USD billion |
| Later forecast value | 22.63 USD billion |
Frameworks, tools and delivery methods
Good advisory work relies on repeatable methods. The ILO guide breaks its approach into five steps: sound out the market, assess the organization's ability to deliver, design the services, launch and market them, and track performance [9][10]. The same order works well as a learning sequence for a new practitioner.
Common tools include the following.
- ESG rating systems and carbon footprint calculation models [6]
- Stakeholder mapping tools for deciding whom to consult [6]
- Economic models that map supply chains from company accounts and external datasets [15]
- Templates, checklists and case studies for strategy, implementation and reporting [10]
Tools matter only when they feed a decision. Advisors turn outputs into an improvement plan, a disclosure draft or a board paper. A model that is not tied to a decision adds cost without adding value.
Opinion In practice, a clear materiality list often does more for a small client than a complex model, because it tells the team where to spend effort.
| Aspect | Reporting and disclosure | Strategy and governance | Ratings support | Basis |
|---|---|---|---|---|
| Main work | Materiality assessment, gap analysis and report preparation [3] | Strategy, policy, board structure and risk integration [17] | Help to secure scores from rating agencies [19] | Fact |
| Frameworks named | CSRD and ESRS, EU Taxonomy, SFDR, GRI, TCFD, ISSB [3] | Governance guidance linked to enterprise risk management [17] | CDP, EcoVadis, Sustainable Fitch, S&P, Sustainalytics [19] | Fact |
| Typical buyer | Companies with disclosure duties [2] | Boards and financial institutions [17] | Companies seeking a rating score [19] | Opinion |
| Main risk | Organizations may not be ready for assurance [2] | Advice not tied to measurable outcomes [11] | Advice that shapes ratings may need legal separation for rating providers [5] | Fact |
| Skills needed | Standards knowledge and data handling [3] | Governance, economics and client communication [18] | Rating methodology and clear documentation [19] | Opinion |
Applications and concrete scenarios
ESG advisory shows up in a few recurring situations: a first-time disclosure, a financing event that needs credibility, and a membership body that wants to serve smaller firms. The three scenarios below show how the work runs in practice.
Each scenario depends on a clear starting point and a measurable target. Without them, the advisor cannot show progress or set a fair price for the work.
Market size, roles and employment outcomes
Market estimates vary widely, partly because publishers define scope differently. One report forecasts a compound annual growth rate of 14.2% and a market reaching USD 24.1 billion from a base of USD 12.4 billion [21]. Another gives a compound annual growth rate of 8.8% with a forecast value of US$ 27,199 million [1]. A third gives 5.16% for a broader ESG and sustainability advisory market [22].
Revenue is still uneven. One commentary says the economics remain fragile because winning mandates takes lengthy procurement cycles and upfront investment in expertise and business development [11]. Funding from public and philanthropic sources is also becoming less predictable [12].
Job roles combine technical and client skills. An EY posting for a manager in its climate change and sustainability team asks for experience in ESG reporting, rating advisory or strategy development, along with proactive, accountable people who can manage competing priorities and communicate clearly [18]. Regional commentary describes a talent shortage among firms expanding their sustainability capabilities [2].
Opinion For a career changer, reporting and disclosure roles are often a practical first step, because the work has clear inputs, deadlines and recognized standards.
Regulation, conflicts of interest and delivery risks
Regulation is the main driver of demand, and it also sets limits. In the European Union, ESMA question-and-answer guidance says that advisory work which could affect the independence of ESG rating activities may require legal separation. Examples include advice that helps a client improve its rating through disclosures, KPIs or strategy. Routine tax or accounting advice is an illustrative exception [5].
Fact Under the ESMA guidance, a firm must assess whether a service materially affects ratings processes before deciding whether separation is needed [5].
The OECD notes that conflicts of interest arise where firms provide services to issuers that they also assess, whether in ESG ratings, proxy advice or index construction [14]. It points to the need for further oversight and for transparency of revenues by business line where regulation is limited [14].
Delivery risks are practical. One regional commentary notes that organizations may not be ready for sustainability assurance and that buy-in for ESG practices across full supply chains has gained little traction [2]. Consultants also face the challenge of staying current with changing regulations and managing complex compliance processes [23].
Building competence in ESG advisory step by step
A learner can build competence through a sequence that mirrors how real engagements run. Start with the frameworks, practice the method, then move into a specialty. Each step should end with a written output, such as a materiality list or a short market summary.
Frameworks come first because every later task depends on them. The ILO five-step sequence gives a workable order for practice [9][10]. Reporting skills come next, followed by governance and ratings support.
Market sounding is a good early exercise, since it forces you to test demand before designing anything [9]. Write a one-page summary of a membership body's likely needs and the gap between those needs and the services it already offers.
Keep a record of each output. A portfolio of drafts, checklists and short analyses shows employers what you can produce and makes self-paced study concrete.
Original analysis
vaayaa analysis: spread in published market sizes
- Take the base market value from five reports and express each in USD billion: 8 [7], 11.9 [24], 14.46 [8], 15.054 [1], 1.392 [6] and 48.9169 [22].
- Find the highest and lowest values: 48.9169 and 1.392.
- Divide the highest by the lowest: 48.9169 divided by 1.392 is about 35.1.
- For growth in one report, subtract base from forecast: 27,199 minus 15,054 is 12,145 million.
- Divide the increase by the base: 12,145 divided by 15,054 is about 0.807, or about 80.7% growth in the report's own figures.
Published base values differ by about 35 times from lowest to highest, so most of the gap likely reflects scope and definitions rather than the market itself. Before comparing reports, check whether each includes assurance, ratings or only advisory work. The 80.7% figure is a calculation from one report's numbers, not a measured outcome.
A self-paced route to competence in ESG advisory
- 1
Map the frameworks
Match CSRD and ESRS, TCFD, GRI, ISSB and SFDR to their purpose and scope [3].
- 2
Practice market sounding
Write a short needs assessment for one client type, following the first ILO step [9].
- 3
Draft a materiality list
Identify the five to eight issues a sample company should report and justify each choice.
- 4
Design a service package
Set modules, deliverables and timelines for a small-firm client, as the ILO guide describes [10].
- 5
Track and review
Compare planned outputs with actual results and record what changed and why.
Worked example
Sizing a membership package (assumed figures)
- Assume 8 member firms each buy a 3-module package. Total modules: 8 x 3 = 24.
- Assume each module needs 4 advisor days. Total advisor days: 24 x 4 = 96.
- Assume one advisor day is billed at USD 600. Gross fee value: 96 x 600 = USD 57,600.
- The sources do not give advisor costs, so the net margin cannot be calculated from them and must be estimated separately.
Under these assumptions the package generates USD 57,600 in gross fees. The result depends entirely on the assumed day rate and the number of member firms, so test both before setting a price.
Before you offer or join an ESG advisory engagement
- Write down the scope and source of every market figure you plan to cite.
- Map the disclosure standards that apply to the target client before drafting anything.
- Check whether an advisory role could affect rating independence under local rules [5].
- Build one materiality list for a sample organization as a practice piece.
- Define how you will track the client's progress after launch [9].
- Keep a portfolio of checklists, templates and short analyses for your own records.
Frequently asked questions
Is ESG advisory the same as ESG rating?
No. Advisory helps an organization plan, report and improve its performance. Rating assigns a score based on published information. Some guidance warns that advice aimed at improving a rating can threaten a rating firm's independence, so the two roles are kept apart in some settings [5][14].
Who needs this work?
Listed companies, financial institutions, investment managers and membership organizations all buy parts of this work. Membership bodies may design packages for smaller firms, as the ILO guide describes [10]. Demand is tied to disclosure rules and investor expectations [2].
Do I need a finance background?
Not always. Reporting work draws on data handling, standards knowledge and clear writing. Governance and sustainable finance roles draw more on accounting and investment knowledge. Job postings often combine accounting, reporting and regulatory knowledge [18].
Which frameworks should I learn first?
Start with the frameworks your target clients face. Common references include CSRD and ESRS, EU Taxonomy, SFDR, TCFD, GRI and ISSB [3]. Begin with one or two, then add others as your clients require them.
How reliable are market size figures?
Treat them as estimates. Base values in the published sources range widely, which shows that scope and definitions differ [1][6]. Check each publisher's method and whether it covers the service you care about before relying on a number.
Can I build competence without a classroom?
Yes. A self-paced, text-based route can cover frameworks, method and writing. Work through a sample client case, write the outputs and review them against the ILO sequence [9]. Competence comes from producing usable documents, not from finishing lessons alone.
Conclusion
ESG advisory combines regulatory knowledge, disclosure skills and client judgment. Demand is strong in the sources, but estimates vary widely, so check scope before you rely on any figure [21][1][7].
The safest way to build competence is a fixed sequence: map the frameworks, sound out a market, draft a materiality list, design a package and track results [9][10]. Keep the independence rules in view, since they shape which roles a firm can hold for the same client [5].
This discourse describes education and careers. It is general information, not legal, financial or professional advice.
Learning sources
References
- marketresearch.com. Global Environmental, Social, and Governance (ESG) Advisory Market by Company, Regions, Type and Application, Forecast to.
- abmagazine.stage.accaglobal.com. Firms retool for ESG.
- en.moore-tk.de. ESG & Sustainability Advisory | Moore TK.
- greenfutureproject.com. ESG and environmental sustainability advisory | GFP.
- service.betterregulation.com. Consulting activities to investors or undertakings (ESMA_QA_2889) (10 July ).
- marketpublishers.com. Global ESG Advisory Service Market by Company, Regions, Type and Application, Forecast to.
- htfmarketintelligence.com. ESG Advisory Services Market Update; Opportunity Of The Decade.
- giiresearch.com. ESG Consulting Services Market Forecasts to - Global Analysis By Service Type, Organization Size, End User and By Geography - Compare.
- ilo.org. How to set up successful ESG advisory services.
- ilo.org. How to set up successful ESG advisory services. A practical guide for employer and business membership organizations on driving sustainability.
- government.economictimes.indiatimes.com. Business of ESG: Shifting from frameworks and ratings to economically durable revenues - - Blog.
- cfo.economictimes.indiatimes.com. From ESG adoption to ESG as a business.
- marketpublishers.com. Global Environmental, Social and Governance (ESG) Advisory Market by Company, Regions, Type and Application, Forecast to - Global Environmental, Social and Governance (ESG) Advisory Market by Company, Regions, Type and Application, Forecast to 20....
- oecd.org. Policy considerations: The Role of Capital Market Service Providers in Corporate Governance - The Role of Capital Market Service Providers in Corporate Governance.
- oxfordeconomics.com. Test S-Map Page.
- pierag.com. ESG and Sustainability Advisory | Strategy and Compliance.
- kpmg.com. Sustainability Governance - Investors, research and rating firms, employees, customers, and regulators now critically assess how companies manage climate ch....
- careers.ey.com. Manager - ESG Advisory, Climate Change and Sustainability Services - Manager - ESG Advisory, Climate Change and Sustainability Services.
- ir.diginex.com. Diginex Limited Launches ESG Rating Support Service to Help Businesses Secure and Improve ESG Scores | Tue, 02/25/ - 16:00.
- markets.ft.markitdigital.com. Company Announcements.
- giiresearch.com. ESG Advisory Services Market - Strategic Insights and Forecasts (-) - Compare.
- marketresearch.com. Global ESG and Sustainability Advisory Industry Trends Analysis Report , Forecast to (Broken Down by Type, End User, Regional Analysis, and Competitive Landscape).
- manifestclimate.com. ESG Consulting: Top Challenges for Advisors in.
- researchandmarkets.com. Environmental, Social and Governance (ESG) Consulting Market Report.