Food Service / Restaurants

Dunkin' sustainability score: 25/100

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About Dunkin'

Dunkin' is a US-based quick-service restaurant chain founded in 1950, headquartered in Canton, Massachusetts. Owned by Inspire Brands since 2021, it operates over 13,000 locations across 40+ countries, primarily serving coffee, donuts, and breakfast items.

More about Dunkin'

A major player in the global QSR sector.

Founded 1950Head office Canton, United StatesStaff ~254,000Revenue ~$1.4B (corporate); ~$15B systemwideWebsite ↗

Our verdict

Dunkin' discloses almost no quantitative sustainability data despite operating 13,000+ restaurants globally. Emissions figures remain unpublished, supply chain carbon is entirely unquantified, and no science-based targets exist. The company resolved its foam cup controversy in 2020 but continues to rely on single-use packaging and greenwashing claims unsupported by measurable action.

Dunkin' scores 25/100 (Significant gaps) on SINK's independent climate assessment, scored from public data only. Scores are free. Companies can never pay for anything about their own score. Last verified May 2026.

That places Dunkin' joint 808th of 934 companies scored, and joint 42nd of 51 in Food Service / Restaurants.

The ten questions

What is Dunkin' doing well, and where does it fall short?

Strongest on Controversies & Red Flags and Nature & Biodiversity Impact (6/10, 3/10). Weakest on Carbon Footprint: Supply Chain and Targets & Commitments (1/10, 1/10).

What's missing

Where Dunkin' lost points

For each question that lost points, the evidence our public rubric looks for that we didn't find.

  • Emissions from its own operations2/10No emissions figures for its own operations, not even an estimate from energy bills.
  • Emissions from its supply chain1/10No assessment of where its supply-chain emissions come from.
  • Whether its emissions are falling2/10No evidence its emissions are falling, not even from energy bills or mileage.
  • How clean its energy is2/10No renewable energy tariff or major efficiency investment shown.
  • Its effect on nature3/10No assessment of its effect on nature, and no basic environmental policy.
  • How it uses materials and handles waste3/10No active waste reduction, reuse or repair shown.
  • Its effect on water2/10No monitoring of water use, or no measures to reduce it.
  • Its climate targets1/10No emissions reduction targets.
  • How openly it reports2/10No published sustainability data, or no one named as responsible for it.
  • Its record on controversies6/10Points 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.

The calculation

How is Dunkin''s SINK score calculated?

Same ten questions for every company. No private weighting.

SINK = (0.3 × Base + 0.7 × Performance) × Scale
Industry base impact
Food Service / Restaurants sector ceiling.
45 / 100
Performance score
Sum of the ten questions, each scored 0 to 10.
24 / 100
Raw score
Weighted average before scale penalty.
(0.3 × 45) + (0.7 × 24) = 30.3
Scale penalty
Multiplier based on total emissions. Bigger polluters lose more.
× 0.82
Final score
Rounded. Significant gaps.
25 / 100
Where the evidence comes from

What evidence is Dunkin''s score based on?

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

55% of them were published by Dunkin' itself; the rest come from independent sources.

Scored on 5 April 2026 under an earlier version of our method. We're re-checking it under the current method.

[1]Self-reported
Inspire Brands Impact — Environment
Ongoing
Q1Q2Q3Q4Q6Q7Q8Q9
View →
[2]Independent source
DitchCarbon — Inspire Brands Inc
Ongoing
Q1Q2Q8
View →
[3]Self-reported
Inspire Brands Impact — Sustainable Restaurants
Ongoing
Q3Q4Q7
View →
[4]Self-reported
Inspire Brands Impact — Homepage
Ongoing
Q3
View →
[5]Self-reported
Inspire Brands Impact — Sustainable Food
Ongoing
Q5
View →
[6]Public record
Beverage Daily — Dunkin' Ramps Up Sustainability Commitment
2019
Q5
View →
[7]Self-reported
Dunkin' Sustainability Fact Sheet
2020
Q6
View →
[8]Public record
Breakfast Hustle — Environmental Impact of Dunkin's Foam-to-Paper Transition
UnknownArchived copy from 2025-06-23: the original link no longer opens for us.
Q7
View →
[9]Public record
Litter Awareness — Dear Dunkin' Donuts
Unknown
Q10
View →
[10]Independent source
Harvard D3 — A Hot Serving of Empty Promises: Dunkin' Brands, the Enduring Foam Cups, and Sustainable Coffee
Unknown
Q10
View →
[11]Self-reported
Inspire Brands Impact — Reporting
Ongoing
Q9
View →

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

For Dunkin'

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    Dunkin': SINK sustainability score 25/100.

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Dunkin' in context

How does Dunkin' compare with other food service / restaurants companies?

Where Dunkin' sits among food service / restaurants peers.

Among the 51 major food service / restaurants brands we've scored, Dunkin' is tied =42nd of 51, with 3 others.

=42/51
Dunkin''s rank
34
Industry average
19
Industry low
51
Industry high
See all 51 in Food Service / Restaurants →
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