Deloitte sustainability score: 45/100
Better than 28% of Consulting / Professional Services
Making progress starts at 46. The highest score on SINK is 71.
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.
More about Deloitte
One of the Big Four accounting and consulting firms, Deloitte serves public and private sector clients including major fossil fuel operators.
Founded 1845Head office New York City, United StatesStaff ~345,374 (2021)Revenue ~$67.2B (FY2024)Website ↗
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. Scores are free. Nobody can pay to change a score, speed it up or hide it. Last verified May 2026.
That places Deloitte joint 281st of 1,023 companies scored, and joint 21st of 30 in Consulting / Professional Services.
What is Deloitte doing well, and where does it fall short?
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).
Where Deloitte lost points
For each question that lost points, the evidence our public rubric looks for that we didn't find.
What would raise this score
- Emissions from its supply chainMeasure most of its supply-chain (Scope 3) emissions.
- Its effect on natureMeasure its effect on nature and have it independently verified.
- How it uses materials and handles wasteReport measurable waste or recycling targets publicly.
Every question that lost points
- Emissions from its own operations6/10Its own emissions aren't independently verified or tracked over several years.
- Emissions from its supply chain4/10Most of its supply-chain (Scope 3) emissions aren't measured.
- Whether its emissions are falling5/10No evidence of a year-on-year fall in its total emissions.
- How clean its energy is7/10Less than 90% of its energy shown to be renewable.
- Its effect on nature4/10Its effect on nature isn't measured or independently verified.
- How it uses materials and handles waste4/10No measurable waste or recycling targets reported publicly.
- Its effect on water4/10No measured water footprint with reduction targets.
- Its climate targets6/10Its targets aren't validated by the Science Based Targets initiative.
- How openly it reports6/10No annual impact report, or no pay linked to climate targets.
- Its record on controversies4/10Points deducted for controversies or its business model. The finding is under question 10.
A score changes when the evidence does. We use new published evidence at the next rescore. Anyone can send us new evidence, free. How to send it.
How is Deloitte's SINK score calculated?
Same ten questions for every company. No private weighting.
SINK = (0.3 × Base + 0.7 × Performance) × ScaleWhat evidence is Deloitte's score based on?
10 sources used in this assessment. All publicly available. Each row shows which of the ten questions it informed.
70% of them were published by Deloitte itself; the rest come from independent sources.
If you believe a source has been misread or a newer version exists, submit a challenge.
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How does Deloitte compare with other consulting / professional services companies?
Where Deloitte sits among consulting / professional services peers.
Among the 30 major consulting / professional services brands we've scored, Deloitte is tied =21st of 30, with 1 other.
Who scores higher in Consulting / Professional Services?
The 3 companies in the sector scoring nearest above Deloitte.
Seetec's footprint was 815 tCO2e in its year to March 2026, about 60% below 2021 but up 3% on the year, and part of the fall comes from leaving landlord-managed premises out of the count.
See the breakdown →NTT DATA's market-based footprint was 6,452,788 t in FY2025, covering all 15 Scope 3 categories, up 18.7% on FY2024; Scope 1 and 2 fell 9.8% but Scope 3 rose.
See the breakdown →EY's climate disclosure is comprehensive but undercut by rising absolute emissions since FY22 and heavy reliance on offsets to claim 'carbon negative' status.
See the breakdown →Which companies moved this week, and why.
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