Monzo Bank·Financial Services / Banking·United Kingdom, United Kingdom·Founded 2010·Last verified 31 May 2026
47
out of 100
Making progressPending Review

Monzo reports comprehensive carbon data but absolute emissions rose 17% year-on-year, undermining its net zero 2030 claim. Financed emissions—critical for banks—are entirely absent. The company lacks third-party verification, SBTi validation, and a formal sustainability report despite holding £16.6B in deposits.

The calculation

Every score shows its working.

Same formula for every company. No curve. No private weighting.

SINK = (0.3 × Base + 0.7 × Performance) × Scale
Industry base impact
Financial Services / Banking sector ceiling.
50 / 100
Performance score
Sum of the 10 rubric questions, scored 0–10 each.
45 / 100
Raw score
Weighted average before scale penalty.
(0.3 × 50) + (0.7 × 45) = 46.5
Scale penalty
Multiplier based on absolute emissions volume — physics-first.
× 1
Final score
Rounded. Making progress.
47 / 100
The ten questions

Where Monzo Bank is strong, and where it isn't.

Strongest on Energy Source and Controversies & Red Flags (7/10, 7/10). Weakest on Emissions Trajectory and Targets & Commitments (2/10, 3/10).

Where the evidence comes from

Every document used, listed.

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

Limited data coverage. This assessment is based on 6 sources, 33% of which are self-reported by the company. Scores may change as independent evidence becomes available.

[1]Self-reported
Protecting the Environment
Ongoing
Q1Q2Q3Q4Q5Q6Q8Q9
View →
[2]Self-reported
Carbon Removals
Ongoing
Q5
View →
[3]Third-party verified
Watershed — Monzo Mission to Bring Carbon Transparency to Banking
Unknown
Q2
View →
[4]Third-party verified
DitchCarbon — Monzo SBTi Commitment
Unknown
Q8
View →
[5]Public record
Unleash — The End of Water Cooler Moments at Monzo
Unknown
Q7
View →
[6]Third-party verified
Sacra — Monzo Profile
Unknown
Q10
View →

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

Monzo Bank in context

Where Monzo Bank sits among financial services / banking peers.

Among the 29 major financial services / banking brands we've scored, Monzo Bank is tied =7th of 29, with 1 other.

=7/29
Monzo Bank's rank
40
Industry average
23
Industry low
65
Industry high
How this score has moved

Monzo Bank's score over time.

today

Score history begins 6 April 2026.

As Monzo Bank's score updates, the trajectory will appear here.

We're backfilling historical scores for FTSE 100 and S&P 100 companies over the coming weeks.

What's being contested

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 Monzo Bank

Monzo is a UK-based digital bank founded in 2010, offering mobile-first current accounts and financial services. As a fintech lender and payments processor, it holds significant customer deposits and payment data but operates with minimal physical infrastructure compared to traditional banks.

Founded
2010
Headquarters
United Kingdom, United Kingdom
Employees
~3,800
Annual revenue
~£1.2B
Company website ↗
Track Monzo Bank

We'll let you know when the score moves.

Email alerts when a rubric question is verified, a challenge is resolved, or the overall score changes.

THE SUNDAY RUNDOWN

Which companies moved this week, and why.

One email, every Sunday. Score changes, new research, the stories behind the numbers. Free.

No spam. Unsubscribe in one click.

HOW SINK STAYS INDEPENDENT

Readers and institutions support our work. Companies can pay to submit evidence we couldn't find. Neither type of payment changes a score.