Company lists · Data refreshed September 2026

Top 25 Outsourced accounting services companies worldwide

RevenueBase identified 38,501 outsourced accounting services companies worldwide as of September 2026 and tracks 205,452 professional contacts across them, including 44,387 with verified work emails. The United States is the largest market and London the largest hub.

This list covers outsourced accounting services 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 20, 2026. Country and city lists for outsourced accounting services 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review
38,501Companies
205,452Contacts tracked
44,387Verified emails
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The 25 largest outsourced accounting services companies worldwide

Ranked by team size
Top 25 of 38,501 outsourced accounting services companies worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to outsourced accounting services companies: 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 evidenceSouthport, AustraliaHQ checked Sep 20, 20261,001-5,0003,912 contacts →

Indirect evidence

“Don’t wait until understaffing eats away at your productivity and client satisfaction.”

Source: RevenueBase Database · checked Sep 20, 2026
2Partial evidenceAustin, TX, United StatesHQ checked Sep 20, 202610001+2,231 contacts →

Partial evidence

“OUR PEOPLE, YOUR PRIORITIES Streamline your finance & accounting team at 50% cost savings with a team as small as one.”

Source: RevenueBase Database · checked Sep 20, 2026
3Strong evidenceMakati, PhilippinesHQ checked Sep 20, 20261,001-5,0001,021 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 20, 2026
4Strong evidenceSas Nagar, IndiaHQ checked Sep 20, 2026501-1,000917 contacts →

Strong evidence

“We’re on a mission to become Asia Pacific's most trusted provider of outsourced accounting, trade, international business and advisory services.”

Source: RevenueBase Database · checked Sep 20, 2026
5Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 20, 2026n/a913 contacts →

Indirect evidence

“B Consulting provides a plug-and-play financial operations team for high-growth startups.”

Source: RevenueBase Database · checked Sep 20, 2026
6Partial evidenceAhmedabad, IndiaHQ checked Sep 20, 20261,001-5,000857 contacts →

Partial evidence

“Confiance specializes in providing highly personalized business solutions in the areas of bookkeeping and accounting, financial planning, financial advisory, back office and…”

Source: RevenueBase Database · checked Sep 20, 2026
7Indirect evidenceRecife, BrazilHQ checked Sep 20, 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 20, 2026
8Strong evidenceManila, PhilippinesHQ checked Sep 20, 2026501-1,000831 contacts →

Strong evidence

“IQ BackOffice is the leading accounting Business Process Outsourcing and Automation provider, offering 99.97% quality and up to 68% savings to companies around the globe.”

Source: RevenueBase Database · checked Sep 20, 2026
9Strong evidenceAhmedabad, IndiaHQ checked Sep 20, 20261,001-5,000810 contacts →

Strong evidence

“Established in 2008, Pacific was formed to serve the clients with the best services in the field of outsourced accounting.”

Source: RevenueBase Database · checked Sep 20, 2026
10Indirect evidenceRohini, IndiaHQ checked Sep 20, 2026n/a798 contacts →

Indirect evidence

“D N A & Co.| Chartered Accountants”

Source: RevenueBase Database · checked Sep 20, 2026
11Indirect evidenceRio De Janeiro, BrazilHQ checked Sep 20, 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 20, 2026
12Strong evidenceAhmedabad, IndiaHQ checked Sep 20, 20261,001-5,000628 contacts →

Strong evidence

“KMK Ventures is a leading Outsourced Accounting & Tax solutions company providing services to clients based out of USA.”

Source: RevenueBase Database · checked Sep 20, 2026
13Strong evidenceSan Fernando, PhilippinesHQ checked Sep 20, 20261,001-5,000617 contacts →

Strong 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 20, 2026
14Partial evidenceIrving, TX, United StatesHQ checked Sep 20, 2026201-500571 contacts →

Partial evidence

“Founded in 2007, Metriqe Solutions started out as a Hotel Accounting firm in USA.”

Source: RevenueBase Database · checked Sep 20, 2026
15Indirect evidenceSalt Lake City, UT, United StatesHQ checked Sep 20, 2026201-500482 contacts →

Indirect evidence

“We specialize in providing full-service CFOs, controllers, and operational accountants to consult with our clients.”

Source: RevenueBase Database · checked Sep 20, 2026
16Strong evidenceHarrow, United KingdomHQ checked Sep 20, 2026201-500477 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 20, 2026
17Partial evidenceHyderabad, IndiaHQ checked Sep 20, 20261,001-5,000477 contacts →

Partial evidence

“Share Microfin Ltd is an Accounting company located in 1-224/58, Rajeev Nagar, Nacharam, Hyderabad, Andhra Pradesh, India.”

Source: RevenueBase Database · checked Sep 20, 2026
18Strong evidenceNoida, IndiaHQ checked Sep 20, 2026501-1,000474 contacts →

Strong evidence

“Global FPO is an Accounting, Bookkeeping and Tax Consulting, and outsourcing company that helps CPAs, accounting firms, small and mid-sized businesses, and startups strengthen…”

Source: RevenueBase Database · checked Sep 20, 2026
19Indirect evidenceCentral Business District, SingaporeHQ checked Sep 20, 2026201-500457 contacts →

Indirect evidence

“Expert accountants + simple software = financial admin, done.”

Source: RevenueBase Database · checked Sep 20, 2026
20Strong evidenceCoventry, United KingdomHQ checked Sep 20, 2026501-1,000423 contacts →

Strong evidence

“Corient is a specialist outsourced accounting and bookkeeping partner, built exclusively for UK accountancy practices.”

Source: RevenueBase Database · checked Sep 20, 2026
21Partial evidenceBeverly, MA, United StatesHQ checked Sep 20, 202651-200415 contacts →

Partial evidence

Outsourced Bookkeeping and Controller Services Supporting Strategies provides outsourced bookkeeping services, controller services and operational support to growing businesses.”

Source: RevenueBase Database · checked Sep 20, 2026
22Indirect evidenceMohali, IndiaHQ checked Sep 20, 2026201-500415 contacts →

Indirect evidence

“Escalon’s one stop shop approach gives you a single touch point for everything you need to keep your company safe.”

Source: RevenueBase Database · checked Sep 20, 2026
23Strong evidenceNew York, NY, United StatesHQ checked Sep 20, 20261,001-5,000397 contacts →

Strong evidence

Outsource Partners International (OPI) is a professional services firm dedicated to the outsourcing of finance, accounting, and analytics business processes.”

Source: RevenueBase Database · checked Sep 20, 2026
24Indirect evidenceAlphen Aan Den Rijn, NetherlandsHQ checked Sep 20, 2026n/a377 contacts →

Indirect evidence

“Tidak in Alphen aan den Rijn is het administratiekantoor voor startende ondernemers, zzp'ers, mkb en particulieren.”

Source: RevenueBase Database · checked Sep 20, 2026
25Indirect evidenceSan Francisco, CA, United StatesHQ checked Sep 20, 2026201-500366 contacts →

Indirect evidence

“At Bench by Mainstreet, we believe small business owners deserve more than just software - they deserve real financial support.”

Source: RevenueBase Database · checked Sep 20, 2026

Showing 25 of 38,501 outsourced accounting services companies worldwide

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Outsourced accounting services companies worldwide at a glance

As of Sep 20, 2026
21.6%Verified-email coverage
5.3Average contacts per company
1-10Median size (employees)
1.7%Largest-city concentration · London
Sep 20, 2026Page data refreshed

Companies by employee count

1-10
29,643
11-50
7,302
51-200
1,013
201-500
199
501-1,000
43
1,001-5,000
37
5,001-10,000
2
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 outsourced accounting services 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 outsourced accounting services companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “outsourced accounting services 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 outsourced accounting services 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 outsourced accounting services 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, 44,387 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 20, 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.

Outsourced accounting services companies by location

137 lists · largest first

Every Outsourced accounting services companies 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 outsourced accounting services 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 outsourced accounting services companies are there worldwide?

RevenueBase identified 38,501 outsourced accounting services 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 outsourced accounting services companies?

The United States leads with 9,821 companies, followed by Brazil (3,882) and the United Kingdom (3,388). Every outsourced accounting services companies list by country and city is linked on this page.

Which city has the most outsourced accounting services companies?

London leads with 656 headquartered companies, followed by Sao Paulo (607) and Ahmedabad (277).

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 44,387 verified decision-maker contacts tracked across these 38,501 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 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 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.