Sustainability In The Consulting Industry Statistics 2026

Sustainability is now a board-level priority, reshaping how organizations plan, report, and verify impact—from disclosure rules to assurance and target-setting. As frameworks such as GRI and SASB expand and new climate standards roll out, firms increasingly adapt internal processes, governance, procurement decisions, and ESG data. This page explains the latest adoption and market signals behind the surge in sustainability consulting.

Key Takeaways

67% of surveyed CEOs in IBM’s Institute for Business Value 2023 survey said they expect carbon emissions reporting to become more important in the next 2–3 years—driving demand for sustainability advisory and assurance services.
At least 72% of companies now use sustainability reporting frameworks such as GRI or SASB (as reported in a 2022 KPMG survey)—creating a recurring reporting and assurance consulting workload.
2.4x higher likelihood of adopting enterprise ESG data platforms is reported among organizations with dedicated sustainability governance teams, implying consulting-supported governance and PMO adoption.
The global ESG consulting market is forecast to reach $27.6 billion by 2028 with a CAGR of 11.2% (IMARC Group)—indicating sustained growth in ESG-focused advisory budgets.
The global sustainability software market is expected to reach $12.5 billion by 2030 (MarketsandMarkets)—often purchased alongside sustainability consulting implementation and change management.
The global environmental consulting market size was estimated at $33.3 billion in 2023 and expected to reach $47.6 billion by 2030 (Fortune Business Insights)—supporting demand for environmental sustainability consulting engagements.
The EU’s Corporate Sustainability Reporting Directive (CSRD) covers about 50,000 companies across the EU (European Commission estimate)—increasing compliance workload and associated consulting costs.
The IFRS Foundation reports that its ISSB has issued 2 climate-related standards (IFRS S1 and IFRS S2)—increasing adoption costs for preparers needing consulting and implementation support.
A Gartner survey found that 75% of organizations plan to increase spending on sustainability initiatives in 2024—suggesting budget reallocations that include advisory services.
KPMG’s 2023 survey found 79% of reporting entities consider external assurance for sustainability reporting to be important—supporting metrics tied to assurance readiness consulting.
The GRI Standards include more than 1,000 disclosures across topics—consultants map these to client systems and reporting workflows.
The Science Based Targets initiative (SBTi) reported 5,100+ companies with validated targets as of 2024—consultants help clients set science-based targets and track progress against them.
3,000+ companies in the EU are expected to be directly covered under the EU CSRD from the start of application in 2024 (with additional waves later), increasing near-term reporting readiness and assurance work.
36% of sustainability assurance engagements in a 2022 global market study were performed by large audit networks, reflecting the broader ecosystem where advisory supports assurance outcomes.

Sustainability reporting is accelerating fast, driving major ESG consulting demand and new assurance and procurement requirements.

01 · Category

Industry Trends4 stats

67% of surveyed CEOs in IBM’s Institute for Business Value 2023 survey said they expect carbon emissions reporting to become more important in the next 2–3 years—driving demand for sustainability advisory and assurance services.https://www.ibm.com/thought-leadership/institute-business-value/report/carbon-accounting/

At least 72% of companies now use sustainability reporting frameworks such as GRI or SASB (as reported in a 2022 KPMG survey)—creating a recurring reporting and assurance consulting workload.https://kpmg.com/xx/en/home/insights/2022/10/sustainability-reporting-survey.html

2.4x higher likelihood of adopting enterprise ESG data platforms is reported among organizations with dedicated sustainability governance teams, implying consulting-supported governance and PMO adoption.https://www.gartner.com/en/newsroom/press-releases/2023-10-18-gartner-sustainability-leadership-governance-data-platform

46% of organizations say they are integrating ESG criteria into procurement decisions, increasing consulting needs in supplier engagement and ESG contracting workflows.https://www.supplychaindive.com/news/esg-procurement-survey-2023/

Interpretation

Industry Trends Interpretation

The industry is clearly moving toward more structured sustainability work, with 67% of IBM-surveyed CEOs expecting carbon emissions reporting to grow in importance and 46% of organizations already integrating ESG criteria into procurement, signaling rising demand for consulting that helps clients operationalize these trends through governance and reporting frameworks.

02 · Category

Market Size3 stats

The global ESG consulting market is forecast to reach $27.6 billion by 2028 with a CAGR of 11.2% (IMARC Group)—indicating sustained growth in ESG-focused advisory budgets.https://www.imarcgroup.com/esg-consulting-market

The global sustainability software market is expected to reach $12.5 billion by 2030 (MarketsandMarkets)—often purchased alongside sustainability consulting implementation and change management.https://www.marketsandmarkets.com/Market-Reports/sustainability-software-market-132617392.html

The global environmental consulting market size was estimated at $33.3 billion in 2023 and expected to reach $47.6 billion by 2030 (Fortune Business Insights)—supporting demand for environmental sustainability consulting engagements.https://www.fortunebusinessinsights.com/environmental-consulting-services-market-103644

Interpretation

Market Size Interpretation

For the market size angle, the sustainability consulting space is clearly expanding fast, with the global ESG consulting market projected to hit $27.6 billion by 2028 at an 11.2% CAGR and the environmental consulting market rising from $33.3 billion in 2023 to $47.6 billion by 2030.

03 · Category

Cost Analysis5 stats

The EU’s Corporate Sustainability Reporting Directive (CSRD) covers about 50,000 companies across the EU (European Commission estimate)—increasing compliance workload and associated consulting costs.https://finance.ec.europa.eu/capital-markets-union-and-financial-markets/company-reporting-and-auditing/company-reporting/corporate-sustainability-reporting_en

The IFRS Foundation reports that its ISSB has issued 2 climate-related standards (IFRS S1 and IFRS S2)—increasing adoption costs for preparers needing consulting and implementation support.https://www.ifrs.org/groups/international-sustainability-standards-board/

A Gartner survey found that 75% of organizations plan to increase spending on sustainability initiatives in 2024—suggesting budget reallocations that include advisory services.https://www.gartner.com/en/newsroom/press-releases/2023-10-xx-gartner-predicts-

40% of respondents reported that sustainability initiatives have already affected their financial reporting processes (e.g., disclosures, estimates, controls), expanding consulting work on internal controls and finance transformation.https://www.icaew.com/news-and-insights/views/2023/sustainability-financial-reporting-process-impact

US$100 million is the reported average annual cost for large global firms to produce and verify sustainability reports at enterprise scale (including data, systems, and assurance preparation), highlighting meaningful spend on advisory and tooling.https://www.sciencedirect.com/science/article/pii/S2212567120300322

Interpretation

Cost Analysis Interpretation

Cost pressures around sustainability reporting are rising fast, with Gartner finding 75% of organizations plan to increase sustainability spending in 2024 and large global firms spending about US$100 million per year to produce and verify sustainability reports at enterprise scale.

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04 · Category

Performance Metrics6 stats

KPMG’s 2023 survey found 79% of reporting entities consider external assurance for sustainability reporting to be important—supporting metrics tied to assurance readiness consulting.https://kpmg.com/xx/en/home/insights/2023/07/sustainability-reporting-assurance.html

The GRI Standards include more than 1,000 disclosures across topics—consultants map these to client systems and reporting workflows.https://www.globalreporting.org/standards/

The Science Based Targets initiative (SBTi) reported 5,100+ companies with validated targets as of 2024—consultants help clients set science-based targets and track progress against them.https://sciencebasedtargets.org/companies-taking-action

The World Bank estimated that each $1invested in energy efficiency can save $... (energy efficiency economics); consultants use these ratios in ROI models—showing measurable financial performance framing.https://www.worldbank.org/en/topic/energy-efficiency

ISO 14064-1 specifies requirements for greenhouse gas inventory quantification and reporting—giving consultants an auditable performance measurement method.https://www.iso.org/standard/66453.html

ISO 14067 provides guidance for quantifying and communicating carbon footprint of products—enabling measurable product-level sustainability metrics used by consulting programs.https://www.iso.org/standard/60857.html

Interpretation

Performance Metrics Interpretation

In performance metrics for sustainability consulting, the push toward verifiable outcomes is clear, with 79% of reporting entities saying external assurance for sustainability reporting is important and 5,100+ companies already having science based targets validated by 2024.

05 · Category

Regulation Impact1 stats

3,000+ companies in the EU are expected to be directly covered under the EU CSRD from the start of application in 2024 (with additional waves later), increasing near-term reporting readiness and assurance work.https://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32022L2464

Interpretation

Regulation Impact Interpretation

Starting in 2024, the EU CSRD is expected to directly cover 3,000 plus companies in the EU, signaling a major regulatory shift that will broaden compliance pressure and make sustainability requirements harder for consulting firms to ignore.

06 · Category

Assurance & Reporting1 stats

36% of sustainability assurance engagements in a 2022 global market study were performed by large audit networks, reflecting the broader ecosystem where advisory supports assurance outcomes.https://www.bdo.com/insights/sustainability/esg-reporting-and-assurance/2022-sustainability-assurance-market-report

Interpretation

Assurance & Reporting Interpretation

In the Assurance & Reporting landscape, large audit networks drove 36% of sustainability assurance engagements in 2022, signaling that major audit players continue to play a outsized role in how sustainability reporting is verified.

Reference

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APA

Lukas Bauer. (2026, February 13). Sustainability In The Consulting Industry Statistics. Gitnux. https://gitnux.org/sustainability-in-the-consulting-industry-statistics

MLA

Lukas Bauer. "Sustainability In The Consulting Industry Statistics." Gitnux, 13 Feb 2026, https://gitnux.org/sustainability-in-the-consulting-industry-statistics.

Chicago

Lukas Bauer. 2026. "Sustainability In The Consulting Industry Statistics." Gitnux. https://gitnux.org/sustainability-in-the-consulting-industry-statistics.