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Sector Rankings

Most Sustainable Consulting / Professional Services Companies 2026

8 Consulting / Professional Services companies ranked 0–100 on real environmental impact using SINK's open, physics-first formula.

8
Companies ranked
54
Sector average
59
Sector best (Accenture)
Full ranking
1
💼AccentureMaking progress
59
2
🏢Ernst & Young Global Limited (EY)Making progress
58
3
🌍Bioregional DevelopmentMaking progress
57
4
💻International Business Machines CorporationMaking progress
56
5
🏢PricewaterhouseCoopersMaking progress
53
6
🏔️Protect Our WintersMaking progress
52
7
💼McKinsey & CompanyMaking progress
52
8
🏢DeloitteBelow expectations
45
Frequently asked

Consulting / Professional Services sustainability, answered.

Which Consulting / Professional Services company is the most sustainable?

Accenture is the highest-scoring Consulting / Professional Services company on SINK with a score of 59/100 (Making progress).

What is the average sustainability score for Consulting / Professional Services companies?

The average SINK score across 8 Consulting / Professional Services companies is 54/100. The global average across all scored companies is 38/100.

How does SINK rate Consulting / Professional Services companies?

SINK scores Consulting / Professional Services companies on 10 questions using public data: Scope 1/2/3 carbon footprint, energy source, nature and biodiversity, resource use, water impact, emissions trajectory, science-based targets, transparency, and major controversies. The formula adjusts for the industry's inherent environmental footprint and company scale.

Which Consulting / Professional Services company has the worst sustainability score?

Deloitte has the lowest SINK score among Consulting / Professional Services companies at 45/100 (Below expectations).

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