Company lists · Data refreshed September 2026

Top 25 Internal audit service providers worldwide

RevenueBase identified 3,052 company matches for internal audit service providers worldwide as of September 2026 and tracks 29,337 professional contacts across them, including 5,723 with verified work emails. India is the largest market and Sao Paulo the largest hub.

This list covers company matches for internal audit service providers 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 20, 2026. Country and city lists for internal audit service providers 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 20, 2026 How this list was built
3,052Companies
29,337Contacts tracked
5,723Verified emails
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The 25 largest internal audit service providers worldwide

Ranked by team size
Top 25 of 3,052 company matches for internal audit service providers worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSp, BrazilHQ recorded Sep 20, 20261,001-5,0001,791 contacts →

Exact match

“Presidida por Raul Corrêa da Silva, a BDO RCS foi fundada em 2001 e desde então mantém participação expressiva no mercado de auditorias.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2Exact matchMumbai, IndiaHQ recorded Sep 20, 2026201-500458 contacts →

Exact match

“We offer Internal Audit & Risk Consulting related services.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3Exact matchParis, FranceHQ recorded Sep 20, 2026201-500345 contacts →

Exact match

“Based in Paris, Lyon, Rennes, Le Havre, Toulouse, Aix en Provence, Casablanca, London and New York, BM & A is an independent and international group positioned on the audit and…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4Exact matchMumbai, IndiaHQ recorded Sep 20, 202651-200222 contacts →

Exact match

“V.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5Exact matchSão Paulo, BrazilHQ recorded Sep 20, 2026201-500203 contacts →

Exact match

“HIGH EXPERTISE FOR YOU TATICCA was born with the purpose of providing independent and internal audit services, as well as tax, consulting, business advisory, corporate finance…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6Exact matchUmhlanga, South AfricaHQ recorded Sep 20, 2026201-500184 contacts →

Exact match

“Auditing, Accounting and Taxation It’s been 100 years since David Strachan strode from the pavement of Smith Street into William Cotta Building at number 331, and put up his…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7Exact match千代田区, JapanHQ recorded Sep 20, 20265,001-10,000181 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8Exact matchNew Delhi, IndiaHQ recorded Sep 20, 202651-200163 contacts →

Exact match

“Sahni Natarajan And Bahl [SNB](Est.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9Exact matchRiyadh, Saudi ArabiaHQ recorded Sep 20, 202651-200140 contacts →

Exact match

“Nasser Alkanhal Chartered Accountants & Consultants(License No.789),is managed by Mr.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10Exact matchLuxembourgHQ recorded Sep 20, 202651-200128 contacts →

Exact match

“Governance forms the backbone of any entity.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11Exact matchBudapest, HungaryHQ recorded Sep 20, 202651-200128 contacts →

Exact match

“Forvis Mazars in Hungary The Hungarian office in Budapest started its operation in 1991 and is now one of the largest audit and advisory firm in the country.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12Exact matchParis, FranceHQ recorded Sep 20, 2026201-500117 contacts →

Exact match

“Talenz Audit accompagne les acteurs économiques, entreprises et organisations, dans leurs relations économiques, dans l’analyse de la fiabilité de leurs données financières, et…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13Exact matchFareham, United KingdomHQ recorded Sep 20, 202651-200117 contacts →

Exact match

“Relax.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14Exact matchAhmedabad, IndiaHQ recorded Sep 20, 202651-200109 contacts →

Exact match

“While you are focused on building or growing the business, many things like Governance, Strategy, Risks, and compliance need attention.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15Exact matchJersey City, NJ, United StatesHQ recorded Sep 20, 202651-20098 contacts →

Exact match

“Accume Partners, now part of Cherry Bekaert, is a trusted risk assurance and advisory leader and innovator in delivering integrated solutions to our clients in highly regulated…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16Exact matchP.o Box 32232, ZambiaHQ recorded Sep 20, 202611-5092 contacts →

Exact match

“HLB Zambia is a member of HLB International of the UK,a worldwide network of independent accounting firms and business advisers.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17Exact matchMumbai, IndiaHQ recorded Sep 20, 202651-20088 contacts →

Exact match

“Technologies Ltd, headquartered in Mumbai, is a 25 year old company that is listed on National Stock Exchange (NSE) and Bombay Stock Exchange (BSE) and is one of India’s leading…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18Exact matchChennai, IndiaHQ recorded Sep 20, 2026201-50087 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19Exact matchJakarta Selatan, IndonesiaHQ recorded Sep 20, 202651-20086 contacts →

Exact match

“Public Accountants”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20Exact matchJohannesburg, South AfricaHQ recorded Sep 20, 2026201-50085 contacts →

Exact match

“Internal Auditing, IT Auditing, Risk Advisory, Technology Consulting, and Forensics.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21Exact matchMilano, ItalyHQ recorded Sep 20, 202611-5082 contacts →

Exact match

“L’Associazione Italiana Internal Auditors è dal 1972 il punto di riferimento in Italia per le tematiche di Controllo Interno, Corporate Governance, Compliance e di Risk Management…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22Exact matchŁódź, PolandHQ recorded Sep 20, 202651-20076 contacts →

Exact match

“Jesteśmy dynamicznie rozwijającą się Kancelarią Biegłych Rewidentów, założoną w 2010 roku.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23Exact matchReggio Nell'emilia, ItalyHQ recorded Sep 20, 202651-20074 contacts →

Exact match

“Analisi S.p.A.”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24Exact matchBengaluru, IndiaHQ recorded Sep 20, 202611-5074 contacts →

Exact match

“Digital Age offers various services like Information Systems Consulting / Advising on improvement in IT Processes and better IT Governance, Data Integrity Verification, Post…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25Exact matchTaunton, United KingdomHQ recorded Sep 20, 202651-20071 contacts →

Exact match

“SWAP is a well established not for profit organisation that focuses on internal audit but also offers a variety of independent business improvement and assurance services designed…”

Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

Showing 25 of 3,052 internal audit service providers worldwide

See the full list, filter by size, metro and specialty, and access 5,723 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Internal audit service providers worldwide at a glance

As of Sep 20, 2026
19.5%Verified-email coverage
9.6Average contacts per company
1-10Median size (employees)
1.8%Largest-city concentration · Sao Paulo
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
1,757
11-50
1,033
51-200
200
201-500
38
501-1,000
6
1,001-5,000
3
5,001-10,000
6
10001+
1

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 internal audit service providers are linked below.
What qualifies
Company records worldwide whose business descriptions match “internal audit service providers” 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 5,723 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 20, 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.

Internal audit service providers by location

21 lists · largest first

Every Internal audit service providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 “internal audit service providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many internal audit service providers are there worldwide?

RevenueBase identified 3,052 company matches for internal audit service providers 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?

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

Which country has the most internal audit service providers?

India leads with 216 companies, followed by the United States (196) and Brazil (186). Every internal audit service providers list by country and city is linked on this page.

Which city has the most internal audit service providers?

Sao Paulo leads with 56 company records, followed by Dubai (48) and Istanbul (47).

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 5,723 professional contacts with verified work emails tracked across these 3,052 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 20, 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.