Deloitte is a multinational professional services firm providing audit, tax, consulting, and advisory services.
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Deloitte reports comprehensive multi-scope emissions data with SBTi-validated net-zero targets, but absolute emissions reduction is glacial at 7% over five years. The critical weakness: material complicity in fossil fuel auditing and consulting undermines credibility. Supply chain scope remains methodologically incomplete and unverified globally.
Deloitte scores 45/100 (Below expectations) on SINK's independent climate assessment, scored from public data only. Fees pay for the review, never the result. Last verified May 2026.
That places Deloitte joint 258th of 847 companies scored, and 12th of 16 in Consulting / Professional Services.
Where Deloitte sits among consulting / professional services peers.
Among the 16 major consulting / professional services brands we've scored, Deloitte sits 12th of 16.
Its three lowest-scoring questions, and what the evidence didn't show.
Purchased goods and services acknowledged but classified as preliminary with high measurement uncertainty.
No quantified nature footprint, no TNFD self-disclosure (only client advisory), no deforestation-free supply chain commitment.
No globally consolidated waste reduction targets or circular economy metrics published for full network.
A score changes when the evidence does. We use new published evidence at the next rescore. Evidence that isn't public can count through an evidence review.
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Get in touch →Strongest on Energy Source and Carbon Footprint — Operations (7/10, 6/10). Weakest on Carbon Footprint — Supply Chain and Nature & Biodiversity Impact (4/10, 4/10).
The 3 companies in the sector scoring nearest above Deloitte.
Protect Our Winters is a climate advocacy nonprofit with a negligible operational footprint but no formal sustainability disclosure.
See the breakdown →McKinsey reports 62% Scope 1&2 reductions and 100% renewable electricity, but its dominant emissions (Scope 3 business travel) are tracked only per-employee, not absolute.
See the breakdown →The formula and all 10 sources.
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × Scale10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
If you believe a source has been misread or a newer version exists, submit a challenge.
Deloitte is a multinational professional services firm providing audit, tax, consulting, and advisory services. Founded in 1845, headquartered in New York, it operates across 150+ countries with over 345,000 employees. One of the Big Four accounting and consulting firms, Deloitte serves public and private sector clients including major fossil fuel operators.
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