Company lists · Data refreshed September 2026

Top 25 Online accounting firms worldwide

Name: Online accounting firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 49,027 companies tracked

RevenueBase identified 49,027 online accounting firms worldwide as of September 2026 and tracks 269,622 professional contacts across them, including 74,154 with verified work emails. The United States is the largest market and London the largest hub.

This list covers online accounting 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 21, 2026. Country and city lists for online accounting 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 21, 2026 86% judged on-target in blind review

49,027Companies

269,622Contacts tracked

74,154Verified emails

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The 25 largest online accounting firms worldwide

Ranked by team size

Top 25 of 49,027 online accounting firms worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to online accounting 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	TOA Global	Indirect evidence	Southport, AustraliaHQ checked Sep 21, 2026	1,001-5,000	3,912 contacts →
	Indirect evidence “Don’t wait until understaffing eats away at your productivity and client satisfaction.” Source: RevenueBase Database · checked Sep 21, 2026
2	Frank, Rimerman Co. LLP	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 21, 2026	501-1,000	893 contacts →
	Indirect evidence “Established in 1949, our firm is unique for its pervasive passion and nimble delivery of over 75 years of experience.” Source: RevenueBase Database · checked Sep 21, 2026
3	Bernhoeft	Indirect evidence	Recife, BrazilHQ checked Sep 21, 2026	501-1,000	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 21, 2026
4	Taxassist Accountants	Indirect evidence	Norwich, United KingdomHQ checked Sep 21, 2026	201-500	708 contacts →
	Indirect evidence “At TaxAssist Accountants we specialise in providing accountancy services, tax returns, payroll, bookkeeping, tax savings and tax advice to small businesses and support over…” Source: RevenueBase Database · checked Sep 21, 2026
5	KUMAR	Indirect evidence	United StatesHQ checked Sep 21, 2026	1,001-5,000	627 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
6	Scrubbed.Net Global Services	Partial evidence	San Fernando, PhilippinesHQ checked Sep 21, 2026	1,001-5,000	617 contacts →
	Partial 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
7	Indiafilings	Partial evidence	Chennai, IndiaHQ checked Sep 21, 2026	501-1,000	501 contacts →
	Partial evidence “IndiaFilings is an online platform that helps Entrepreneurs easily obtain their business registration and manage their tax filings at an affordable price.” Source: RevenueBase Database · checked Sep 21, 2026
8	Sensiba LLP	Partial evidence	San Jose, CA, United StatesHQ checked Sep 21, 2026	501-1,000	493 contacts →
	Partial evidence “Sensiba’s comprehensive accounting, tax, and consulting services help businesses and people solve problems, navigate complexity, and build a foundation for sustainable growth.” Source: RevenueBase Database · checked Sep 21, 2026
9	Singerlewak LLP	Partial evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	201-500	487 contacts →
	Partial evidence “SingerLewak has a 60-year history of serving clients as one of the leading West Coast based public accounting firms; SingerLewak understands the needs of business owners and…” Source: RevenueBase Database · checked Sep 21, 2026
10	NOW CFO	Indirect evidence	Salt Lake City, UT, United StatesHQ checked Sep 21, 2026	201-500	482 contacts →
	Indirect evidence “We specialize in providing full-service CFOs, controllers, and operational accountants to consult with our clients.” Source: RevenueBase Database · checked Sep 21, 2026
11	Outbooks	Partial evidence	Harrow, United KingdomHQ checked Sep 21, 2026	201-500	477 contacts →
	Partial evidence “Outbooks is a leading provider of outsourcing services to accounting and bookkeeping firms.” Source: RevenueBase Database · checked Sep 21, 2026
12	Share Microfin LTD	Partial evidence	Hyderabad, IndiaHQ checked Sep 21, 2026	1,001-5,000	477 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 21, 2026
13	Global FPO	Partial evidence	Noida, IndiaHQ checked Sep 21, 2026	501-1,000	474 contacts →
	Partial 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 21, 2026
14	FED	Indirect evidence	Paris, FranceHQ checked Sep 21, 2026	n/a	474 contacts →
	Indirect evidence “La FED est une société d’expertise-comptable avec une mission précise : accompagner les entrepreneurs,favoriser leur réussite.Grâce à nos valeurs, nous bâtissons une relation de…” Source: RevenueBase Database · checked Sep 21, 2026
15	Prager Metis Cpas	Partial evidence	New York, United StatesHQ checked Sep 21, 2026	201-500	467 contacts →
	Partial evidence “Prager Metis CPAs is an independent, full service, public accounting and consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026
16	SLEEK	Indirect evidence	Singapore, United KingdomHQ checked Sep 21, 2026	501-1,000	466 contacts →
	Indirect evidence “Built by entrepreneurs, for entrepreneurs, Sleek’s mission is to make the lives of our fellow entrepreneurs easier.” Source: RevenueBase Database · checked Sep 21, 2026
17	OSOME	Indirect evidence	Central Business District, SingaporeHQ checked Sep 21, 2026	201-500	457 contacts →
	Indirect evidence “Expert accountants + simple software = financial admin, done.” Source: RevenueBase Database · checked Sep 21, 2026
18	Supporting Strategies	Indirect evidence	Beverly, MA, United StatesHQ checked Sep 21, 2026	51-200	415 contacts →
	Indirect 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
19	Collective	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	390 contacts →
	Indirect evidence “Collective is the first all-in-one financial platform designed to give self-employed entrepreneurs the technology and team they need so they can focus on their passion, not their…” Source: RevenueBase Database · checked Sep 21, 2026
20	Bench Accounting By Mainstreet	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	201-500	366 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 21, 2026
21	Cohesive	Indirect evidence	Exton, PA, United StatesHQ checked Sep 21, 2026	501-1,000	364 contacts →
	Indirect evidence “Cohesive is a leading solutions provider and systems integrator for IBM Maximo.” Source: RevenueBase Database · checked Sep 21, 2026
22	Clark Nuber PS	Partial evidence	Bellevue, WA, United StatesHQ checked Sep 21, 2026	201-500	347 contacts →
	Partial evidence “Clark Nuber is an award-winning Certified Public Accounting firm located in the Seattle Metro Area.” Source: RevenueBase Database · checked Sep 21, 2026
23	Advantage ONE TAX Consulting	Indirect evidence	Sterling, VA, United StatesHQ checked Sep 21, 2026	201-500	347 contacts →
	Indirect evidence “Advantage One Tax Consulting is a multi-disciplinary group of highly experienced tax professionals who understand the tax practice in its true spirit, examine the issues it faces…” Source: RevenueBase Database · checked Sep 21, 2026
24	Dougs Compta	Indirect evidence	Lyon, FranceHQ checked Sep 21, 2026	201-500	345 contacts →
	Indirect evidence “Nous sommes une startup Lyonnaise à forte croissance, investie d’une mission : révolutionner la comptabilité des petites entreprises.” Source: RevenueBase Database · checked Sep 21, 2026
25	Agilize Contabilidade Online	Partial evidence	Salvador, BrazilHQ checked Sep 21, 2026	51-200	344 contacts →
	Partial evidence “Somos a primeira contabilidade online do Brasil e, desde 2013, estamos transformando a forma como empreendedores cuidam de suas empresas.” Source: RevenueBase Database · checked Sep 21, 2026

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: online accounting firms. 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 online accounting firms.
Partial evidence: Its own public description names part of online accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name online accounting firms. 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 49,027 online accounting firms worldwide

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Online accounting firms worldwide at a glance

As of Sep 21, 2026

27.5%Verified-email coverage

5.5Average contacts per company

1-10Median size (employees)

2.1%Largest-city concentration · London

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

36,430

11-50

10,556

51-200

1,342

201-500

215

501-1,000

1,001-5,000

5,001-10,000

10001+

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 online accounting 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 online accounting firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “online accounting 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 online accounting 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 online accounting 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, 74,154 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.

Online accounting firms by location

185 lists · largest first

Every Online accounting 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 online accounting 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 online accounting firms are there worldwide?

RevenueBase identified 49,027 online accounting 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?

TOA Global, headquartered in Southport, tops this list with the largest team on record.

Which country has the most online accounting firms?

The United States leads with 14,598 companies, followed by the United Kingdom (5,349) and Brazil (4,964). Every online accounting firms list by country and city is linked on this page.

Which city has the most online accounting firms?

London leads with 1036 headquartered companies, followed by Sao Paulo (736) and New York (340).

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 74,154 verified decision-maker contacts tracked across these 49,027 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.