Company lists · Data refreshed September 2026

Top 25 Cpa firm outsourcing services worldwide

RevenueBase identified 46,215 cpa firm outsourcing services worldwide as of September 2026 and tracks 353,489 professional contacts across them, including 112,400 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers cpa firm outsourcing 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 cpa firm outsourcing 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review
46,215Companies
353,489Contacts tracked
112,400Verified emails
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The 25 largest cpa firm outsourcing services worldwide

Ranked by team size
Top 25 of 46,215 cpa firm outsourcing services worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cpa firm outsourcing services: 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
1Indirect evidenceJakarta, IndonesiaHQ checked Sep 21, 2026501-1,0001,508 contacts →

Indirect evidence

“BDO is the leading provider of professional services within the mid-tier of our profession.”

Source: RevenueBase Database · checked Sep 21, 2026
2Indirect evidenceMadrid, SpainHQ checked Sep 21, 2026501-1,000890 contacts →

Indirect evidence

“En Grant Thornton España ayudamos a que tu empresa vaya más allá.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceCaracas, VenezuelaHQ checked Sep 21, 2026n/a865 contacts →

Indirect evidence

“Statistics first”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceRecife, BrazilHQ checked Sep 21, 2026501-1,000833 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 21, 2026
5Indirect evidenceOrléans, FranceHQ checked Sep 21, 20261,001-5,000800 contacts →

Indirect evidence

“Pour ORCOM, le conseil est un état d'esprit.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceRohini, IndiaHQ checked Sep 21, 2026n/a798 contacts →

Indirect evidence

“D N A & Co.| Chartered Accountants”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceRio De Janeiro, BrazilHQ checked Sep 21, 2026501-1,000666 contacts →

Indirect evidence

“Fundada em 1984, a Domingues e Pinho Contadores conta com uma trajetória de sucesso, baseada na ética e na excelência dos serviços prestados.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceSan Fernando, PhilippinesHQ checked Sep 21, 20261,001-5,000617 contacts →

Indirect evidence

“Scrubbed is an outsourced professional services firm providing a complete suite of accounting*, finance, and tax services, as well as support services for professional…”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceLuxembourgHQ checked Sep 21, 2026501-1,000600 contacts →

Indirect evidence

“BDO Luxembourg is one of the largest firms of accountants, auditors and consultants in Luxembourg.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceTel Aviv, IsraelHQ checked Sep 21, 20261,001-5,000574 contacts →

Indirect evidence

“BDO Israel is a dynamic and business oriented accounting and consulting firm, ranking amongst the five leading industry firms in Israel and part of the international network BDO.”

Source: RevenueBase Database · checked Sep 21, 2026
11Partial evidenceAtlanta, GA, United StatesHQ checked Sep 21, 2026201-500558 contacts →

Partial evidence

“Bennett Thrasher provides proven guidance for financial confidence through premier tax, audit, advisory, and outsourcing solutions.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidenceMumbai, IndiaHQ checked Sep 21, 2026201-500484 contacts →

Indirect evidence

“KKC & Associates LLP (formerly Khimji Kunverji & Co LLP) is in public practice as Chartered Accountants since 1936, having over 75 years of experience in the areas of Auditing…”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceHarrow, United KingdomHQ checked Sep 21, 2026201-500477 contacts →

Partial evidence

“Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceSydney, AustraliaHQ checked Sep 21, 2026501-1,000349 contacts →

Partial evidence

“hammerjack is an Australian and Philippine-owned offshore outsourcing and Knowledge Process Outsourcing (KPO) provider.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceGoiânia, BrazilHQ checked Sep 21, 2026201-500320 contacts →

Indirect evidence

“Movidos pela alta performance, resultados financeiros, contábeis e operacionais excepcionais para nossos clientes, a Alianzo é feita por pessoas.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceVancouver, BC, CanadaHQ checked Sep 21, 2026201-500316 contacts →

Indirect evidence

“DMCL LLP is a full-service accounting firm dedicated to helping you achieve and exceed your business goals, no matter how ambitious.”

Source: RevenueBase Database · checked Sep 21, 2026
17Partial evidenceMoka, MauritiusHQ checked Sep 21, 2026501-1,000310 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 21, 2026
18Partial evidenceLisbon, PortugalHQ checked Sep 21, 2026201-500303 contacts →

Partial evidence

“Fundada em junho de 1982, a Conceito dedica-se à prestação de serviços de outsourcing nas áreas de Contabilidade, Fiscalidade, Consultoria, Processamento Salarial, Tesouraria e…”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceMakati City, PhilippinesHQ checked Sep 21, 2026201-500296 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 21, 2026
20Partial evidenceAhmedabad, IndiaHQ checked Sep 21, 2026201-500279 contacts →

Partial evidence

“Established in 2009, APT is a premier consultancy specializing in outsourcing and offshoring, with a keen focus on Australia's vibrant SME landscape.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceToulouse, FranceHQ checked Sep 21, 2026201-500245 contacts →

Indirect evidence

“FIDSUD, cabinet d'expertise comptable, de conseil aux dirigeants, et d'audit fortement implanté dans le Grand Sud de la France (Aquitaine, Midi-Pyrénées, Languedoc Roussillon…”

Source: RevenueBase Database · checked Sep 21, 2026
22Partial evidenceBhilai, IndiaHQ checked Sep 21, 202651-200243 contacts →

Partial evidence

“Virtual Clone is a leading provider of accounting outsourcing services, tailored specifically for ACCA/FCCA and Chartered Accountancy firms in the UK and Australia.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceBordeaux, FranceHQ checked Sep 21, 2026201-500237 contacts →

Indirect evidence

“Fondé en 1944, Extencia est un cabinet d'expertise comptable indépendant qui a su évoluer avec son temps tout en conservant ses valeurs fondamentales.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceDubai, United Arab EmiratesHQ checked Sep 21, 202651-200226 contacts →

Indirect evidence

“Navigating Complexity.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceRennes, FranceHQ checked Sep 21, 2026201-500223 contacts →

Indirect evidence

“CAPEOS accompagne la gestion et le développement d’entreprises depuis plus de 45 ans.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 46,215 cpa firm outsourcing services worldwide

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Cpa firm outsourcing services worldwide at a glance

As of Sep 21, 2026
31.8%Verified-email coverage
7.6Average contacts per company
1-10Median size (employees)
1.5%Largest-city concentration · Sao Paulo
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
31,382
11-50
12,159
51-200
1,881
201-500
299
501-1,000
62
1,001-5,000
60
5,001-10,000
6
10001+
13

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 cpa firm outsourcing 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 cpa firm outsourcing services are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “cpa firm outsourcing 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 cpa firm outsourcing 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 cpa firm outsourcing 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, 112,400 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.

Cpa firm outsourcing services by location

215 lists · largest first

Every Cpa firm outsourcing services 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 cpa firm outsourcing 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 cpa firm outsourcing services are there worldwide?

RevenueBase identified 46,215 cpa firm outsourcing 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 In Indonesia, headquartered in Dki Jakarta, tops this list with the largest team on record.

Which country has the most cpa firm outsourcing services?

The United States leads with 17,289 companies, followed by Brazil (3,946) and Canada (2,332). Every cpa firm outsourcing services list by country and city is linked on this page.

Which city has the most cpa firm outsourcing services?

Sao Paulo leads with 684 headquartered companies, followed by London (441) and New York (371).

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 112,400 verified decision-maker contacts tracked across these 46,215 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.