Company lists · Data refreshed September 2026

Top 25 Internal controls consulting firms worldwide

RevenueBase identified 8,813 internal controls consulting firms worldwide as of September 2026 and tracks 79,064 professional contacts across them, including 20,790 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers internal controls consulting firms 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 28, 2026. Country and city lists for internal controls consulting firms 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
8,813Companies
79,064Contacts tracked
20,790Verified emails
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The 25 largest internal controls consulting firms worldwide

Ranked by team size
Top 25 of 8,813 internal controls consulting firms worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to internal controls consulting 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
1Partial evidenceMadrid, SpainHQ checked Sep 28, 20261,001-5,0004,468 contacts →

Partial evidence

“Management Solutions is a leading provider of business consulting services for regulated industries.”

Source: RevenueBase Database · checked Sep 28, 2026
2Strong evidenceCanadaHQ checked Sep 28, 2026n/a1,915 contacts →

Strong evidence

“consulting firm in quality and environmental management system, quality control,quality assurance and lean manufacturing and productivity improvement.”

Source: RevenueBase Database · checked Sep 28, 2026
3Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 20261,001-5,0001,688 contacts →

Partial evidence

“Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 20261,001-5,0001,486 contacts →

Indirect evidence

“ACA Group is the leading governance, risk, and compliance advisor to the financial services industry.”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceChennai, IndiaHQ checked Sep 28, 20261,001-5,0001,199 contacts →

Indirect evidence

“Matrix is a passionate team of professionals providing People, Product, and Process assurance services for enterprises across different industry segments for better compliance and…”

Source: RevenueBase Database · checked Sep 28, 2026
6Partial evidencePune, IndiaHQ checked Sep 28, 20261,001-5,0001,152 contacts →

Partial evidence

“In today's complex and challenging business world, Accounting, Auditing & Consulting Firms play a significant role in managing these complexities/challenges and in turning them…”

Source: RevenueBase Database · checked Sep 28, 2026
7Partial evidenceChicago, IL, United StatesHQ checked Sep 28, 20265,001-10,0001,029 contacts →

Partial evidence

“Guidehouse is a leading global provider of consulting services to the public and commercial markets with broad capabilities in management, technology, and risk consulting.”

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceSan Jose, CA, United StatesHQ checked Sep 28, 2026501-1,000675 contacts →

Partial evidence

“Uniqus Consultech is an AI and global tech-enabled consulting company that specializes in Accounting & Reporting Consulting, Governance, Risk & Compliance, Sustainability &…”

Source: RevenueBase Database · checked Sep 28, 2026
9Indirect evidenceMumbai, IndiaHQ checked Sep 28, 2026501-1,000601 contacts →

Indirect evidence

“Founded in 1934, by two gentlemen to whom integrity was paramount, Mr.”

Source: RevenueBase Database · checked Sep 28, 2026
10Indirect evidenceWayne, PA, United StatesHQ checked Sep 28, 20261,001-5,000557 contacts →

Indirect evidence

“For more than 25 years, SolomonEdwards has empowered organizations to tackle common and complex business challenges through strategic advisory, technical advocacy, and hands-on…”

Source: RevenueBase Database · checked Sep 28, 2026
11Indirect evidenceLyon, FranceHQ checked Sep 28, 2026501-1,000502 contacts →

Indirect evidence

“Depuis plus de 40 ans, nos équipes de spécialistes accompagnent nos clients de petites, moyennes et grandes entreprises, dans le pilotage de leurs organisations, la gestion des…”

Source: RevenueBase Database · checked Sep 28, 2026
12Strong evidenceMumbai, IndiaHQ checked Sep 28, 2026201-500458 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceCardiff, United KingdomHQ checked Sep 28, 20261,001-5,000453 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
14Indirect evidenceMumbai, IndiaHQ checked Sep 28, 2026201-500444 contacts →

Indirect evidence

“ANB is a fully-integrated and one of the fastest growing assurance and business advisory firm, with 450 plus employees and presence in 6 countries.”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceWashington, DC, United StatesHQ checked Sep 28, 2026501-1,000403 contacts →

Partial evidence

“IBM Promontory is a global leader in strategy, risk management, and compliance consulting.#IBMConsulting”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceMount Laurel, NJ, United StatesHQ checked Sep 28, 2026201-500364 contacts →

Indirect evidence

“APA Engineering Inc has been a leader in providing Compliance, Engineering, IT, and Sourcing services since With over twenty years in business, we are dedicated to providing the…”

Source: RevenueBase Database · checked Sep 28, 2026
17Partial evidenceParis, FranceHQ checked Sep 28, 2026201-500345 contacts →

Partial 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 28, 2026
18Partial evidenceBerlin, GermanyHQ checked Sep 28, 2026501-1,000335 contacts →

Partial evidence

“PKF Fasselt is one of Germany’s leading mid-sized auditing and consulting firms.”

Source: RevenueBase Database · checked Sep 28, 2026
19Indirect evidenceBrazilHQ checked Sep 28, 2026501-1,000332 contacts →

Indirect evidence

“Desde 1997 no Brasil, somos membros da Moore Global, uma das principais redes de Auditoria, Consultoria, Outsourcing e Tributos presente em mais de 114 países e entre as maiores…”

Source: RevenueBase Database · checked Sep 28, 2026
20Indirect evidenceVienna, VA, United StatesHQ checked Sep 28, 2026201-500326 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
21Indirect evidenceStockholm, SwedenHQ checked Sep 28, 2026201-500321 contacts →

Indirect evidence

“Advisense is a leading governance, risk and compliance powerhouse, offering best-in-class services and tech solutions to the European industry.”

Source: RevenueBase Database · checked Sep 28, 2026
22Indirect evidenceNew York City, NY, United StatesHQ checked Sep 28, 2026201-500308 contacts →

Indirect evidence

“At Comply, we pride ourselves on being the champion for compliance professionals.”

Source: RevenueBase Database · checked Sep 28, 2026
23Indirect evidenceBarueri, BrazilHQ checked Sep 28, 2026201-500278 contacts →

Indirect evidence

“A Protiviti é uma empresa global, com 85 escritórios em 25 países, e mais de profissionais que atendem a 60% das empresas da FORTUNE Reconhecida como Great Place To Work e com…”

Source: RevenueBase Database · checked Sep 28, 2026
24Indirect evidenceNew York, NY, United StatesHQ checked Sep 28, 2026201-500268 contacts →

Indirect evidence

“We stand at the forefront of leadership, insight, and guidance in a world marked by complexity and uncertainty.”

Source: RevenueBase Database · checked Sep 28, 2026
25Partial evidenceMilan, ItalyHQ checked Sep 28, 2026201-500268 contacts →

Partial evidence

“Società consulenza aziendale, revisione e organizzazione contabile associata al network internazionale Nexia.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 25 of 8,813 internal controls consulting firms worldwide

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Internal controls consulting firms worldwide at a glance

As of Sep 28, 2026
26.3%Verified-email coverage
9.0Average contacts per company
1-10Median size (employees)
2.4%Largest-city concentration · Sao Paulo
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
5,939
11-50
2,262
51-200
441
201-500
88
501-1,000
22
1,001-5,000
27
5,001-10,000
8
10001+
4

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 controls consulting 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.
Coverage
Every country. Country and city lists for internal controls consulting firms are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “internal controls consulting 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 internal controls consulting 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 internal controls consulting firms, 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, 20,790 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 28, 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 controls consulting firms by location

50 lists · largest first

Every Internal controls consulting 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 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 controls consulting 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 internal controls consulting firms are there worldwide?

RevenueBase identified 8,813 internal controls consulting firms 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?

Management Solutions, headquartered in Madrid, tops this list with the largest team on record.

Which country has the most internal controls consulting firms?

The United States leads with 1,496 companies, followed by Brazil (654) and India (460). Every internal controls consulting firms list by country and city is linked on this page.

Which city has the most internal controls consulting firms?

Sao Paulo leads with 215 headquartered companies, followed by London (153) and Paris (141).

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 20,790 verified decision-maker contacts tracked across these 8,813 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 28, 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.