International Business Machines Corporation sustainability score: 56/100

·Consulting / Professional Services·Armonk, United States·Founded 1911·Last verified 31 May 2026
56
out of 100
Making progressPending ReviewMixed evidence· 11 src

International Business Machines Corporation scores 56/100 (Making progress) on SINK's independent climate assessment — scored from public data only, no company payment can change a number. Last verified May 2026.

That places International Business Machines Corporation joint 32nd of 809 companies scored, and 5th of 14 in Consulting / Professional Services.

IBM has cut operational emissions 68.5% since 2010 and sources 79.6% renewable electricity, meeting near-term targets early. But Scope 3 reporting is absent—a critical gap for a hardware and services company at this scale—and IBM actively lobbies against climate policy through the US Chamber of Commerce and NAM while serving fossil fuel clients.

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The calculation

How is International Business Machines Corporation's SINK score calculated?

Same ten questions for every company. No private weighting.

SINK = (0.3 × Base + 0.7 × Performance) × Scale
Industry base impact
Consulting / Professional Services sector ceiling.
65 / 100
Performance score
Sum of the 10 rubric questions, scored 0–10 each.
57 / 100
Raw score
Weighted average before scale penalty.
(0.3 × 65) + (0.7 × 57) = 59.4
Scale penalty
Multiplier based on absolute emissions volume — physics-first.
× 0.95
Final score
Rounded. Making progress.
56 / 100
The ten questions

What is International Business Machines Corporation doing well, and where does it fall short?

Strongest on Carbon Footprint — Operations and Emissions Trajectory (8/10, 7/10). Weakest on Nature & Biodiversity Impact and Carbon Footprint — Supply Chain (4/10, 4/10).

Where the evidence comes from

What evidence is International Business Machines Corporation's score based on?

11 sources used in this assessment. All publicly available. Each row shows which rubric questions it informed.

[1]Self-reported
IBM Energy and Climate — Responsibility
Ongoing
Q1Q2Q3Q4Q8Q9
View →
[2]Third-party verified
Scope 1 and 2 GHG Emissions from IBM — Statista
Ongoing
Q1Q3
View →
[3]Public record
IBM Solar Strategy 2025: Powering Future Data Centers
2025
Q4
View →
[4]Public record
IBM Creating, Enhancing and Restoring Habitats to Support Biodiversity — 3BL Media
Unknown
Q5
View →
[5]Self-reported
IBM History: Sustainability
Ongoing
Q5
View →
[6]Self-reported
IBM Pollution Prevention Program
Ongoing
Q6Q7
View →
[7]Self-reported
IBM Sustainability — Environmental
Ongoing
Q6Q7
View →
[8]Third-party verified
Trade Associations and Their Climate Policy Footprint — InfluenceMap
Unknown
Q10
View →
[9]Third-party verified
IBM Resolution Briefing — April 2024 — CA100+ / InfluenceMap
2024
Q9Q10
View →
[10]Public record
Lobbying Expenditures Disclosure: Climate — IBM
Unknown
Q10
View →
[11]Public record
IBM Promises to Be Net Zero by 2030 — Data Center Dynamics
Unknown
Q8
View →

If you believe a source has been misread or a newer version exists, submit a challenge.

International Business Machines Corporation in context

How does International Business Machines Corporation compare with other consulting / professional services companies?

Where International Business Machines Corporation sits among consulting / professional services peers.

Among the 14 major consulting / professional services brands we've scored, International Business Machines Corporation sits 5th of 14.

5/14
International Business Machines Corporation's rank
48
Industry average
22
Industry low
59
Industry high
How this score has moved

Has International Business Machines Corporation's score changed?

International Business Machines Corporation's score has been reviewed 2 times and currently stands where it started, at 56.

0255075100568 February 20265625 April 2026
  1. 56 → 5625 April 2026

    Session 2a cleanup: recomputed performance from sum(questions[].score). performance 56→57, score 56→56.

  2. Scored 568 February 2026

    Initial score at platform launch

What's being contested

Has International Business Machines Corporation's score been challenged?

This score is not currently being contested.

Every challenge is published. We'd rather be corrected than wrong — that's the whole point.

No challenges submitted yet. If you have evidence that contradicts this score, you can challenge any question above — cite a public source and we'll review it.

About International Business Machines Corporation

IBM is a diversified information technology company headquartered in Armonk, New York, operating across cloud computing, enterprise software, quantum computing, and professional services. With 352,600 employees and $62.8 billion in annual revenue, it ranks among the world's largest IT and consulting firms.

Founded
1911
Headquarters
Armonk, United States
Employees
~270,000
Annual revenue
$62.8B (FY2024)
Company website ↗
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