Sector Rankings

Most Sustainable Insurance Companies 2026

6 Insurance companies ranked 0–100 on real environmental impact using SINK's open, physics-first formula.

6
Companies ranked
49
Sector average
58
Sector best (Aviva)
Frequently asked

Insurance sustainability, answered.

Which Insurance company is the most sustainable?

Aviva is the highest-scoring Insurance company on SINK with a score of 58/100 (Making progress).

What is the average sustainability score for Insurance companies?

The average SINK score across 6 Insurance companies is 49/100. The global average across all scored companies is 38/100.

How does SINK rate Insurance companies?

SINK scores Insurance 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 Insurance company has the worst sustainability score?

Allianz has the lowest SINK score among Insurance companies at 38/100 (Below expectations).

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