Company lists · Data refreshed September 2026

Top 25 Big 6 accounting firms worldwide

Name: Big 6 accounting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 43,928 companies tracked

RevenueBase identified 43,928 company matches for big 6 accounting firms worldwide as of September 2026 and tracks 2,396,022 professional contacts across them, including 796,152 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for big 6 accounting firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 21, 2026. Country and city lists for big 6 accounting firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 21, 2026 How this list was built

43,928Companies

2,396,022Contacts tracked

796,152Verified emails

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The 25 largest big 6 accounting firms worldwide

Ranked by team size

Top 25 of 43,928 company matches for big 6 accounting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Kpmg India	Exact match	Gurugram, IndiaHQ recorded Sep 21, 2026	10001+	28,997 contacts →
	Exact match “KPMG entities in India are established under the laws of India and are owned and managed (as the case may be) by established Indian professionals.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	PWC India	Exact match	Kolkata, IndiaHQ recorded Sep 21, 2026	10001+	26,651 contacts →
	Exact match “At PwC, we help clients build trust and reinvent so they can turn complexity into competitive advantage.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	PWC Deutschland	Exact match	Frankfurt Am Main, GermanyHQ recorded Sep 21, 2026	10001+	10,357 contacts →
	Exact match “PwC is the leading auditing and consulting company in Germany.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	CA Firm	Exact match	Chennai, IndiaHQ recorded Sep 21, 2026	n/a	10,260 contacts →
	Exact match “The core business of our firm is to provide comprehensive package of accounting, secretarial, taxation and business advisory services to Corporate Clients.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Kpmg Australia	Exact match	Sydney, AustraliaHQ recorded Sep 21, 2026	5,001-10,000	9,024 contacts →
	Exact match “Welcome to KPMG.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Grant Thornton Bharat LLP	Exact match	New Delhi, IndiaHQ recorded Sep 21, 2026	10001+	8,807 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	MNP	Exact match	Calgary, AB, CanadaHQ recorded Sep 21, 2026	5,001-10,000	8,773 contacts →
	Exact match “MNP is a leading national accounting, tax and business consulting firm in Canada.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	BDO UK	Exact match	London, United KingdomHQ recorded Sep 21, 2026	5,001-10,000	6,933 contacts →
	Exact match “BDO LLP is an accountancy and business advisory firm that provides Audit, Tax, Deals, and Consulting, Risk & Outsourcing (CR & O) services to entrepreneurial, growing and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	BDO India	Exact match	Mumbai, IndiaHQ recorded Sep 21, 2026	5,001-10,000	6,148 contacts →
	Exact match “BDO India is the Indian member firm of BDO, the world’s fifth-largest professional services organisation, operating in 166 countries and territories with a team of over…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Kpmg France	Exact match	Paris La Défense, FranceHQ recorded Sep 21, 2026	10001+	5,839 contacts →
	Exact match “Leader de l'audit, du conseil et de l'expertise comptable, KPMG France est membre de KPMG International, réseau de cabinets indépendants exerçant dans 155 pays.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	SGV & CO	Exact match	Makati City, PhilippinesHQ recorded Sep 21, 2026	5,001-10,000	5,764 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Kpmg Brazil	Exact match	Sao Paulo, BrazilHQ recorded Sep 21, 2026	1,001-5,000	5,551 contacts →
	Exact match “A KPMG opera como uma rede internacional de firmas-membro que oferecem serviços nas áreas de Audit, Tax e Advisory.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Grant Thornton UK	Exact match	London, United KingdomHQ recorded Sep 21, 2026	5,001-10,000	5,509 contacts →
	Exact match “When choosing an advisor, you could accept the usual compromises.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	BDO Canada	Exact match	Toronto, ON, CanadaHQ recorded Sep 21, 2026	1,001-5,000	4,833 contacts →
	Exact match “Canada’s Top 100 Employers 2025 I 2024 I 2023 I 2022 BDO Canada LLP is a leading provider of professional services to clients across a variety of sectors and segments.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	RSM	Exact match	London, United KingdomHQ recorded Sep 21, 2026	10001+	3,630 contacts →
	Exact match “RSM is a leading global network of assurance, tax and consulting firms focused on the middle-market.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Kpmg Singapore	Exact match	SingaporeHQ recorded Sep 21, 2026	1,001-5,000	3,496 contacts →
	Exact match “KPMG is a global organization of independent professional services firms providing Audit, Tax and Advisory services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	PWC Luxembourg	Exact match	LuxembourgHQ recorded Sep 21, 2026	1,001-5,000	3,413 contacts →
	Exact match “PwC Luxembourg is the largest professional services firm in Luxembourg with over 3,600 people employed from 90 different countries.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	In Extenso	Exact match	Lyon, FranceHQ recorded Sep 21, 2026	5,001-10,000	3,278 contacts →
	Exact match “Crée en 1991 In Extenso est l’un des leaders de l’expertise comptable en France.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Kpmg Ireland	Exact match	Dublin 2, IrelandHQ recorded Sep 21, 2026	1,001-5,000	2,952 contacts →
	Exact match “KPMG is a leading provider of professional services, offering a range of audit, tax and advisory services to a broad range of domestic and international clients across all sectors…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Kpmg Saudi Arabia	Exact match	Riyadh, Saudi ArabiaHQ recorded Sep 21, 2026	1,001-5,000	2,774 contacts →
	Exact match “KPMG is established through its member firm KPMG Professional Services and has operated in the Kingdom since 1992.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	PWC Switzerland	Exact match	Zurich, SwitzerlandHQ recorded Sep 21, 2026	1,001-5,000	2,751 contacts →
	Exact match “At PwC, our purpose is to build trust in society and solve important problems.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	BDO In Australia	Exact match	Bdo, IndonesiaHQ recorded Sep 21, 2026	1,001-5,000	2,528 contacts →
	Exact match “BDO is a trusted adviser to clients seeking audit, tax and advisory services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Grant Thornton Ireland	Exact match	Dublin, IrelandHQ recorded Sep 21, 2026	1,001-5,000	2,374 contacts →
	Exact match “In Ireland, Grant Thornton Ireland and Grant Thornton Corporate Finance Limited (and their respective subsidiary/affiliate entities) operate under an alternative practice…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	PWC Sweden	Exact match	Stockholm, SwedenHQ recorded Sep 21, 2026	1,001-5,000	2,276 contacts →
	Exact match “På PwC hjälper vi våra kunder att bygga förtroende och ställa om sin verksamhet för att öka konkurrenskraften.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Kpmg In Pakistan	Exact match	Karachi, PakistanHQ recorded Sep 21, 2026	1,001-5,000	1,997 contacts →
	Exact match “KPMG Taseer Hadi & Co.(KPMG Pakistan) is a member firm of KPMG International, and is part of the Middle East and South Asia (MESA) sub-region of EMA, to respond to an environment…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “big 6 accounting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 43,928 big 6 accounting firms worldwide

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Big 6 accounting firms worldwide at a glance

As of Sep 21, 2026

33.2%Verified-email coverage

54.5Average contacts per company

1-10Median size (employees)

1.7%Largest-city concentration · Sao Paulo

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

21,992

11-50

16,155

51-200

3,943

201-500

848

501-1,000

261

1,001-5,000

314

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for big 6 accounting firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “big 6 accounting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 796,152 professional contacts with verified work emails across the full matched dataset. 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 21, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Big 6 accounting firms by location

229 lists · largest first

Every Big 6 accounting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “big 6 accounting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many big 6 accounting firms are there worldwide?

RevenueBase identified 43,928 company matches for big 6 accounting firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Kpmg India tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most big 6 accounting firms?

The United States leads with 8,342 companies, followed by Brazil (4,320) and India (3,300). Every big 6 accounting firms list by country and city is linked on this page.

Which city has the most big 6 accounting firms?

Sao Paulo leads with 758 company records, followed by London (454) and Paris (436).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 796,152 professional contacts with verified work emails tracked across these 43,928 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 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 SmartSearch, 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.