Company lists · Data refreshed September 2026

Top 25 Trained outsourced bookkeepers worldwide

RevenueBase identified 16,488 trained outsourced bookkeepers worldwide as of September 2026 and tracks 57,190 professional contacts across them, including 12,047 with verified work emails. The United States is the largest market and London the largest hub.

This list covers trained outsourced bookkeepers 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 trained outsourced bookkeepers 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
16,488Companies
57,190Contacts tracked
12,047Verified emails
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The 25 largest trained outsourced bookkeepers worldwide

Ranked by team size
Top 25 of 16,488 trained outsourced bookkeepers worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to trained outsourced bookkeepers: 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 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
2Indirect evidenceHyderabad, IndiaHQ checked Sep 21, 20261,001-5,000477 contacts →

Indirect 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 21, 2026
3Partial evidenceBeverly, MA, United StatesHQ checked Sep 21, 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 21, 2026
4Indirect evidenceHyderabad, IndiaHQ checked Sep 21, 2026201-500260 contacts →

Indirect evidence

“At Oremus Corporate Services, we specialize in delivering top-notch Accounting and Bookkeeping, Secretarial Compliance, Payroll, Tax, HR, and Business Advisory Services.”

Source: RevenueBase Database · checked Sep 21, 2026
5Indirect evidenceNew Delhi, IndiaHQ checked Sep 21, 2026201-500249 contacts →

Indirect evidence

“Mercurius Advisory Services (MAS) provides comprehensive suite of accounting, bookkeeping and taxation services to small, medium and large enterprises.”

Source: RevenueBase Database · checked Sep 21, 2026
6Partial evidenceJaipur, IndiaHQ checked Sep 21, 202651-200156 contacts →

Partial evidence

“Mindspace Outsourcing, established in 2007, and offers bookkeeping outsourcing and accounting services to individuals and small to medium-sized businesses in the United States…”

Source: RevenueBase Database · checked Sep 21, 2026
7Indirect evidenceAhmedabad, IndiaHQ checked Sep 21, 2026201-500151 contacts →

Indirect evidence

“Meru Accounting is the Accounting firm running under the leadership of CA Rushabh Shah and CA Harnish Shah providing accounting and bookkeeping services across Australia, US…”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceHouston, PA, United StatesHQ checked Sep 21, 2026n/a149 contacts →

Indirect evidence

“Accounting Solutions provides a wide range of services to individuals and businesses in a variety of industries.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceUnited StatesHQ checked Sep 21, 202651-200141 contacts →

Indirect evidence

“AccountingDepartment.com, LLC was formed in 2004 to providing full-charge bookkeeping and accounting services for the small to medium business market.”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-200108 contacts →

Indirect evidence

“CrystalVoxx offers a wide range of accounting and payroll services to suit diverse customer needs [Accounting & Payroll, EMR Integrated Transcription, Revenue Cycle Management,].”

Source: RevenueBase Database · checked Sep 21, 2026
11Indirect evidenceUnited KingdomHQ checked Sep 21, 2026n/a101 contacts →

Indirect evidence

“Let us help you reduce the time you spend accounting and bookkeeping for your organisation giving you more time to run your business and enjoy life.”

Source: RevenueBase Database · checked Sep 21, 2026
12Indirect evidencePalatine, United StatesHQ checked Sep 21, 2026n/a101 contacts →

Indirect evidence

“We specialize in accounting services for small and family-owned businesses-serving as the perfect extension of your company’s financial team.”

Source: RevenueBase Database · checked Sep 21, 2026
13Partial evidenceIslamabad, PakistanHQ checked Sep 21, 202651-20097 contacts →

Partial evidence

“Since 2017, Acgile has helped U.S-based eCommerce, automotive, SaaS, and manufacturing businesses take control of their finances through specialized, outsourced accounting and…”

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceVadodara, IndiaHQ checked Sep 21, 202651-20096 contacts →

Indirect evidence

“VNC Global is a leading offshore bookkeeping solutions provider supporting businesses across the Globe.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceVancouver, BC, CanadaHQ checked Sep 21, 202651-20093 contacts →

Indirect evidence

“Enkel is on a mission to disrupt the delivery of accounting and bookkeeping services with transformational cloud-based accounting technology.”

Source: RevenueBase Database · checked Sep 21, 2026
16Indirect evidenceAustraliaHQ checked Sep 21, 2026n/a91 contacts →

Indirect evidence

“Bookkeeping services with over 40+ years of combined experience, we've owned and worked with hundreds of businesses just like yours.”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceAmsterdam, NetherlandsHQ checked Sep 21, 202651-20084 contacts →

Indirect evidence

“Accountancy for small and medium-sized enterprises.”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceSabana, Costa RicaHQ checked Sep 21, 202651-20084 contacts →

Indirect evidence

“AFC ACCOUNTING SERVICES is an accounting company.”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceParis, FranceHQ checked Sep 21, 202651-20084 contacts →

Indirect evidence

“Créé en 2006, CPE SOLUTIONS propose aux cabinets d’expertise comptable une gamme de services personnalisés d’externalisation de saisie comptable pour soutenir leur activité.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidencePittsburgh, PA, United StatesHQ checked Sep 21, 202651-20081 contacts →

Indirect evidence

“For more than 30 years, Bookminders has provided timely, accurate and cost effective bookkeeping for a variety of nonprofits and small businesses.”

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceDublin, IrelandHQ checked Sep 21, 202611-5078 contacts →

Indirect evidence

“OSK have been providing quality and professional business advice to Irish businesses since 1985.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceReston, VA, United StatesHQ checked Sep 21, 202651-20078 contacts →

Indirect evidence

“We’re here to help businesses.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceTampere, FinlandHQ checked Sep 21, 202651-20076 contacts →

Indirect evidence

“Tarjoamme kattavat taloushallinnon palvelut niin uusille yrittäjille kuin yritysmaailman vanhoille konkareillekin.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceWentworthville, AustraliaHQ checked Sep 21, 202611-5076 contacts →

Indirect evidence

“OrangeIQ is a one stop solution to all your accounting and back-office needs.”

Source: RevenueBase Database · checked Sep 21, 2026
25Indirect evidenceFully Remote, United StatesHQ checked Sep 21, 202651-20074 contacts →

Indirect evidence

“We handle the financial operations so small businesses don’t have to.”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 16,488 trained outsourced bookkeepers worldwide

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Trained outsourced bookkeepers worldwide at a glance

As of Sep 21, 2026
21.1%Verified-email coverage
3.5Average contacts per company
1-10Median size (employees)
1.3%Largest-city concentration · London
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
14,281
11-50
1,866
51-200
193
201-500
34
501-1,000
4
1,001-5,000
3
10001+
1

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 trained outsourced bookkeepers, 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 trained outsourced bookkeepers are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “trained outsourced bookkeepers”. 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 trained outsourced bookkeepers), 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 trained outsourced bookkeepers, 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, 12,047 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.

Trained outsourced bookkeepers by location

52 lists · largest first

Every Trained outsourced bookkeepers 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 trained outsourced bookkeepers, 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 trained outsourced bookkeepers are there worldwide?

RevenueBase identified 16,488 trained outsourced bookkeepers 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?

Outbooks, headquartered in London, tops this list with the largest team on record.

Which country has the most trained outsourced bookkeepers?

The United States leads with 6,450 companies, followed by the United Kingdom (1,234) and Canada (1,184). Every trained outsourced bookkeepers list by country and city is linked on this page.

Which city has the most trained outsourced bookkeepers?

London leads with 208 headquartered companies, followed by Houston (118) and New York (105).

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 12,047 verified decision-maker contacts tracked across these 16,488 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.