Company lists · Data refreshed September 2026
Top 25 Internal audit advisory services worldwide
RevenueBase identified 3,430 internal audit advisory services worldwide as of September 2026 and tracks 35,559 professional contacts across them, including 10,247 with verified work emails. Brazil is the largest market and Sao Paulo the largest hub.
This list covers internal audit advisory services worldwide, 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 21, 2026. Country and city lists for internal audit advisory services follow the table.
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.
The 25 largest internal audit advisory services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,791 contacts → | ||||
Indirect evidence “Presidida por Raul Corrêa da Silva, a BDO RCS foi fundada em 2001 e desde então mantém participação expressiva no mercado de auditorias.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,724 contacts → | ||||
Indirect evidence “Grant Thornton är ett ledande revisions- och rådgivningsföretag med över 1400 medarbetare som erbjuder tjänster inom revision, skatt, redovisning och specialistrådgivning.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,442 contacts → | ||||
Indirect evidence “Wollen Sie jemanden, der Sie auch beim Sprung in neue Märkte und bei allen anstehenden Herausforderungen begleitet?” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 599 contacts → | ||||
Indirect evidence “Holen Sie sich eine Datenschutzzertifizierung für Ihr Unternehmen.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 458 contacts → | ||||
Strong evidence “We offer Internal Audit & Risk Consulting related services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 412 contacts → | ||||
Strong evidence “KPMG in the Crown Dependencies is a leading provider of professional services that includes audit, tax and advisory.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 345 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 335 contacts → | ||||
Indirect evidence “PKF Fasselt is one of Germany’s leading mid-sized auditing and consulting firms.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 331 contacts → | ||||
Strong evidence “Felix Advisory is one of the leading providers of tax & regulatory services, risk, transaction, financial & business advisory, internal audit, and corporate governance services in…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 249 contacts → | ||||
Indirect evidence “JSS Pro is now part of TMF Group, a leading global provider of business administration and compliance services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 234 contacts → | ||||
Partial evidence “Transformation is the buzzword in the global business landscape and audit firms like us have a pivotal part to play in helping organisations navigate their way through the…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 203 contacts → | ||||
Strong evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 199 contacts → | ||||
Partial evidence “We are a trusted advisory and compliance firm known for integrity, technical depth, and commercial practicality.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 193 contacts → | ||||
Indirect evidence “RSM Poland to więcej niż biuro rachunkowe, kancelaria doradztwa podatkowego i firma audytorska – to przede wszystkim profesjonalni doradcy i zaufani partnerzy w biznesie.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 189 contacts → | ||||
Partial evidence “Centri Business Consulting provides the highest quality advisory consulting services to its clients by being reliable and responsive to their needs.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 189 contacts → | ||||
Indirect evidence “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 186 contacts → | ||||
Indirect evidence “Adviesorganisatie Improven verbetert de processen, informatievoorziening en projecten.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 181 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 165 contacts → | ||||
Indirect evidence “DLA, LLC is a leading consultancy firm that provides a wide range of specialized services designed to optimize business operations and drive sustainable growth.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 163 contacts → | ||||
Indirect evidence “Sahni Natarajan And Bahl [SNB](Est.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 156 contacts → | ||||
Strong evidence “SB & Company, LLC (SBC) is an audit, tax, risk consulting and business advisory firm that is an outstanding place where highly talented people help our clients succeed.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 146 contacts → | ||||
Indirect evidence “M M NISSIM & CO LLP (MMN) has been in professional practice from the year 1946.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 140 contacts → | ||||
Partial evidence “Founded in 2004, SOAProjects is a national advisory firm with over 22 years of experience offering end-to-end services across the corporate lifecycle.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 140 contacts → | ||||
Indirect evidence “MOORE en España está implantada desde hace más de veinte años, siendo líder en los servicios de auditoría, asesoría y consultoría, con el fin de servir de ayuda en la mejora de la…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 134 contacts → | ||||
Partial evidence “Cotton is an audit and accounting firm located in Old Town Alexandria, VA.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: internal audit advisory services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names internal audit advisory services.
- Partial evidence
- Its own public description names part of internal audit advisory services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name internal audit advisory services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 3,430 internal audit advisory services worldwide
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Internal audit advisory services worldwide at a glance
As of Sep 21, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 internal audit advisory services, 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.
- Coverage
- Every country. Country and city lists for internal audit advisory services are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “internal audit advisory services”. 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 internal audit advisory services), 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 internal audit advisory services, and records with no verified work email.
- 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, 10,247 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 21, 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.
Internal audit advisory services by location
18 lists · largest firstEvery Internal audit advisory services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Internal audit advisory services based in Brazil289
- Internal audit advisory services based in India288
- Internal audit advisory services based in the United States288
- Internal audit advisory services based in Türkiye98
- Internal audit advisory services based in the United Arab Emirates94
- Internal audit advisory services based in Spain91
- Internal audit advisory services based in the United Kingdom91
- Internal audit advisory services based in South Africa89
- Internal audit advisory services based in France84
- Internal audit advisory services based in the Netherlands79
- Internal audit advisory services based in Mexico69
- Internal audit advisory services based in Australia66
- Internal audit advisory services based in Germany66
- Internal audit advisory services based in Canada47
- Internal audit advisory services based in Italy44
- Internal audit advisory services based in Kenya32
- Internal audit advisory services based in Norway29
- Internal audit advisory services based in Sweden27
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 internal audit advisory services, 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 internal audit advisory services are there worldwide?
RevenueBase identified 3,430 internal audit advisory services worldwide 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?
BDO Brazil, headquartered in Sp, tops this list with the largest team on record.
Which country has the most internal audit advisory services?
Brazil leads with 289 companies, followed by India (288) and the United States (288). Every internal audit advisory services list by country and city is linked on this page.
Which city has the most internal audit advisory services?
Sao Paulo leads with 77 headquartered companies, followed by Dubai (60) and London (45).
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 10,247 verified decision-maker contacts tracked across these 3,430 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 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 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.