Company lists · Data refreshed September 2026
Top 25 Audit and assurance outsourcing companies worldwide
RevenueBase identified 4,179 audit and assurance outsourcing companies worldwide as of September 2026 and tracks 63,742 professional contacts across them, including 12,570 with verified work emails. India is the largest market and Dubai the largest hub.
This list covers audit and assurance outsourcing companies 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 27, 2026. Country and city lists for audit and assurance outsourcing companies 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 audit and assurance outsourcing companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,912 contacts → | ||||
Indirect evidence “Don’t wait until understaffing eats away at your productivity and client satisfaction.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,983 contacts → | ||||
Indirect evidence “Established in 2002 and incorporated in 2005, XL Dynamics India Pvt.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 1,021 contacts → | ||||
Strong evidence “D&V Philippines is a finance and accounting outsourcing company that helps CFOs, accounting firms, audit firms, and other professional services firms build reliable offshore…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 957 contacts → | ||||
Indirect evidence “S S Kothari Mehta & Company (SSKM) is chartered accountant firm established in 1953 in Kolkata and later on expanded its base to New Delhi, Chandigarh & Mumbai as well.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 890 contacts → | ||||
Indirect evidence “En Grant Thornton España ayudamos a que tu empresa vaya más allá.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 833 contacts → | ||||
Indirect evidence “A Bernhoeft Contadores é uma empresa de atuação nacional que oferece terceirização de serviços contábeis para clientes de diversos portes e segmentos.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 798 contacts → | ||||
Indirect evidence “D N A & Co.| Chartered Accountants” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 601 contacts → | ||||
Indirect evidence “Founded in 1934, by two gentlemen to whom integrity was paramount, Mr.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 505 contacts → | ||||
Indirect evidence “BDO – en global byrå med nöjdast kunder i revisionsbranschen BDO är en revisions- och rådgivningsbyrå som finns med dig hela vägen.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 458 contacts → | ||||
Partial evidence “We offer Internal Audit & Risk Consulting related services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 450 contacts → | ||||
Indirect evidence “Two chartered accountancy firms S.P.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 436 contacts → | ||||
Partial evidence “Nexia S&A, acteur de l’audit et du conseil, apporte des solutions pertinentes à ses clients dans les domaines comptables et financiers et les accompagne pour les mettre en œuvre.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 393 contacts → | ||||
Partial evidence “Assurance | Tax | Technology” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 374 contacts → | ||||
Indirect evidence “Exponens is an independent group providing public accounting expertise, consultancy and auditing, with more than 300 employees, based in 9 offices in the Ile-de-France region.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 332 contacts → | ||||
Partial 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 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 324 contacts → | ||||
Partial evidence “For over 15 years, Makosi has been redefining what’s possible in the accounting and audit industry with cutting-edge, tech-powered workforce solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 320 contacts → | ||||
Partial evidence “Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 310 contacts → | ||||
Partial evidence “BDO Solutions is a Business Services & Outsourcing company located in Mauritius and forms part of the international BDO network, which extends across 166 countries and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 296 contacts → | ||||
Indirect evidence “We at Diaz Murillo Dalupan and Company (DMD) takes pride in being one of the largest All-Filipino accounting firms in the practice today.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 294 contacts → | ||||
Partial evidence “Founded in 2007, Buchprufer Consultants has grown into a trusted and reputed outsourcing partner delivering high-quality financial and professional services.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 279 contacts → | ||||
Strong evidence “P G BHAGWAT LLP is a Chartered Accountancy Firm that’s been in the profession for over 85 years, providing a wide range of services such as audit and assurance, direct and…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 267 contacts → | ||||
Partial evidence “S P R & Co is a sector agnostic full-service audit and consulting practice that endeavours to exercise original thought to deliver meaningful insights that meet and exceed client…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 261 contacts → | ||||
Indirect evidence “R.G.N.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 252 contacts → | ||||
Strong evidence “SAPRO is a global, tech-enabled talent outsourcing firm specializing in Assurance, Tax, Advisory, and Client Accounting Services (CAS).” Source: RevenueBase Database · checked Sep 27, 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: audit and assurance outsourcing companies. 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 audit and assurance outsourcing companies.
- Partial evidence
- Its own public description names part of audit and assurance outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name audit and assurance outsourcing companies. 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 4,179 audit and assurance outsourcing companies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 12,570 reachable decision-makers.
Free signup · no credit card
Audit and assurance outsourcing companies worldwide at a glance
As of Sep 27, 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 audit and assurance outsourcing companies, 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 audit and assurance outsourcing companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “audit and assurance outsourcing companies”. 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 audit and assurance outsourcing companies), 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 audit and assurance outsourcing companies, 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, 12,570 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 27, 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.
Audit and assurance outsourcing companies by location
28 lists · largest firstEvery Audit and assurance outsourcing companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Audit and assurance outsourcing companies based in India818
- Audit and assurance outsourcing companies based in Brazil218
- Audit and assurance outsourcing companies based in the United States210
- Audit and assurance outsourcing companies based in France189
- Audit and assurance outsourcing companies based in the United Arab Emirates173
- Audit and assurance outsourcing companies based in Spain131
- Audit and assurance outsourcing companies based in Türkiye112
- Audit and assurance outsourcing companies based in South Africa96
- Audit and assurance outsourcing companies based in Australia66
- Audit and assurance outsourcing companies based in Italy61
- Audit and assurance outsourcing companies based in Germany55
- Audit and assurance outsourcing companies based in Pakistan55
- Audit and assurance outsourcing companies based in the United Kingdom54
- Audit and assurance outsourcing companies based in the Netherlands51
- Audit and assurance outsourcing companies based in Ecuador48
- Audit and assurance outsourcing companies based in Poland41
- Audit and assurance outsourcing companies based in Norway39
- Audit and assurance outsourcing companies based in Canada34
- Audit and assurance outsourcing companies based in Sweden32
- Audit and assurance outsourcing companies based in Cyprus27
- Audit and assurance outsourcing companies based in Portugal27
Cities
- Audit and assurance outsourcing companies based in New Delhi, India71
- Audit and assurance outsourcing companies based in Mumbai, India67
- Audit and assurance outsourcing companies based in Ahmedabad, India59
- Audit and assurance outsourcing companies based in Chennai, India42
- Audit and assurance outsourcing companies based in Delhi, India42
- Audit and assurance outsourcing companies based in Pune, India37
- Audit and assurance outsourcing companies based in Hyderabad, India31
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 audit and assurance outsourcing companies, 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 audit and assurance outsourcing companies are there worldwide?
RevenueBase identified 4,179 audit and assurance outsourcing companies 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?
TOA Global, headquartered in Southport, tops this list with the largest team on record.
Which country has the most audit and assurance outsourcing companies?
India leads with 818 companies, followed by Brazil (218) and the United States (210). Every audit and assurance outsourcing companies list by country and city is linked on this page.
Which city has the most audit and assurance outsourcing companies?
Dubai leads with 95 headquartered companies, followed by New Delhi (71) and Mumbai (67).
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 12,570 verified decision-maker contacts tracked across these 4,179 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 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 4,179 audit and assurance outsourcing companies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.