Company lists · Data refreshed September 2026

Top 14 Carbon accounting firms based in Amsterdam, Netherlands

RevenueBase identified 34 carbon accounting firms headquartered in Amsterdam, Netherlands as of September 2026 and tracks 853 professional contacts across them, including 558 with verified work emails and 70 with mobile numbers. Amsterdam is the largest hub.

This list covers carbon accounting firms headquartered in Amsterdam, Netherlands, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 8, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 8, 2026 86% judged on-target in blind review
34Companies
853Contacts tracked
558Verified emails
70Mobile numbers
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The 14 largest carbon accounting firms based in Amsterdam, Netherlands

Ranked by team size
Top 14 of 34 carbon accounting firms based in Amsterdam, Netherlands, ranked by team size, largest first. Data refreshed Sep 8, 2026. RevenueBase Smart Search rates how each company's information relates to carbon accounting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 2026501-1,000556 contacts →

Indirect evidence

“As the leading environmental solutions partner for organizations globally, ACT helps its partners meet increasing environmental action and disclosure expectations from regulators…”

Source: RevenueBase Database · checked Sep 8, 2026
2Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 202651-200123 contacts →

Indirect evidence

“OTC Flow is your partner in achieving net zero emissions, providing customized solutions for your financial-environmental obligations and aspirations.”

Source: RevenueBase Database · checked Sep 8, 2026
3Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 202611-5018 contacts →

Indirect evidence

“The Overview Effect was founded by a mix of freelance sustainability consultants and seasoned ESG veterans who have successfully built a sustainability consultancy before.”

Source: RevenueBase Database · checked Sep 8, 2026
4Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 202611-5018 contacts →

Indirect evidence

“Regreener empowers ambitious companies to take meaningful climate action.”

Source: RevenueBase Database · checked Sep 8, 2026
5Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 202611-5013 contacts →

Indirect evidence

“Wij zijn Factor Delta.”

Source: RevenueBase Database · checked Sep 8, 2026
6Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 20261-1011 contacts →

Indirect evidence

“Creating good growth for organizations around the globe through the implementation of situation-specific sustainability solutions.”

Source: RevenueBase Database · checked Sep 8, 2026
7Partial evidenceAmsterdam, NetherlandsHQ checked Sep 8, 20261-1010 contacts →

Partial evidence

CarbonLeap is a European carbon insetting firm and independent provider of verified Scope 1 and Scope 3 transport emissions reductions.”

Source: RevenueBase Database · checked Sep 8, 2026
8Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 202611-509 contacts →

Indirect evidence

“Compenseer de CO2-uitstoot van jouw bedrijf eenvoudig en snel met ecommit.”

Source: RevenueBase Database · checked Sep 8, 2026
9Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 20261-109 contacts →

Indirect evidence

“Eevery heeft als missie: verduurzaming eenvoudig maken voor het mkb.”

Source: RevenueBase Database · checked Sep 8, 2026
10Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 20261-105 contacts →

Indirect evidence

“Creating a future-proof real estate world Cooltree is a professional real estate sustainability consultancy.”

Source: RevenueBase Database · checked Sep 8, 2026
11Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 20261-102 contacts →

Indirect evidence

“Sustainability is crucial.”

Source: RevenueBase Database · checked Sep 8, 2026
12Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 20261-102 contacts →

Indirect evidence

“We are AchieveNow.”

Source: RevenueBase Database · checked Sep 8, 2026
13Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 20261-101 contacts →

Indirect evidence

“The Best Journey Ever is a company based in Amsterdam, and operating globally, offering Organisational Advisory and Business Consulting in the field of Sustainability.”

Source: RevenueBase Database · checked Sep 8, 2026
14Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 8, 20261-101 contacts →

Indirect evidence

“Van de Wetering Advies heeft ruime ervaring uw bedrijf te verduurzamen, kosten te besparen en te laten voldoen aan de wettelijke verplichtingen.”

Source: RevenueBase Database · checked Sep 8, 2026

Showing 14 of 34 carbon accounting firms based in Amsterdam, Netherlands

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Carbon accounting firms based in Amsterdam, Netherlands at a glance

As of Sep 8, 2026
65.4%Verified-email coverage
8.2%Mobile-number coverage
25.1Average contacts per company
1-10Median size (employees)
105.9%Largest-city concentration · Amsterdam
Sep 8, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
6
51-200
1
501-1,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among carbon accounting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Amsterdam, Netherlands whose own description of what they do matches “carbon accounting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names carbon accounting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among carbon accounting firms, and records with no verified work email. Companies headquartered outside Amsterdam are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 558 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 8, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Carbon accounting firms by metro in the Netherlands

  • Carbon accounting firms in Amsterdam36

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names carbon accounting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many carbon accounting firms are there based in Amsterdam, Netherlands?

RevenueBase identified 34 carbon accounting firms headquartered in Amsterdam, Netherlands as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

ACT Group, headquartered in Amsterdam, tops this list with the largest team on record.

Which city has the most carbon accounting firms?

Amsterdam leads with 36 headquartered companies, followed by Utrecht (12) and Rotterdam (10).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 558 verified decision-maker contacts tracked across these 34 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 8, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.