Company lists · Data refreshed September 2026

Top 25 Tax accountants for software companies worldwide

RevenueBase identified 9,635 tax accountants for software companies worldwide as of September 2026 and tracks 112,498 professional contacts across them, including 22,758 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers tax accountants for software 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 29, 2026. Country and city lists for tax accountants for software 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 29, 2026 86% judged on-target in blind review
9,635Companies
112,498Contacts tracked
22,758Verified emails
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The 25 largest tax accountants for software companies worldwide

Ranked by team size
Top 25 of 9,635 tax accountants for software companies worldwide, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to tax accountants for software 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 evidenceKansas City, MO, United StatesHQ checked Sep 29, 202610001+59,451 contacts →

Indirect evidence

“H&R Block’s purpose is simple: To provide help and inspire confidence in our clients and communities everywhere.”

Source: RevenueBase Database · checked Sep 29, 2026
2Strong evidenceDallas, TX, United StatesHQ checked Sep 29, 20265,001-10,0006,089 contacts →

Strong evidence

“Ryan, an award-winning global tax services and software provider, is the largest Firm in the world dedicated exclusively to business taxes.”

Source: RevenueBase Database · checked Sep 29, 2026
3Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 20261,001-5,0001,587 contacts →

Partial evidence

“Wolters Kluwer Tax & Accounting U.S.”

Source: RevenueBase Database · checked Sep 29, 2026
4Strong evidenceNorwich, United KingdomHQ checked Sep 29, 2026201-500708 contacts →

Strong 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 29, 2026
5Indirect evidenceExton, PA, United StatesHQ checked Sep 29, 2026501-1,000364 contacts →

Indirect evidence

“Cohesive is a leading solutions provider and systems integrator for IBM Maximo.”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceOrem, UT, United StatesHQ checked Sep 29, 2026201-500297 contacts →

Partial evidence

“Squire is a nationally recognized audit, tax, and business advisory firm serving clients across the U.S.”

Source: RevenueBase Database · checked Sep 29, 2026
7Partial evidenceWayne, PA, United StatesHQ checked Sep 29, 2026201-500281 contacts →

Partial evidence

“GTM is a leading provider of corporate tax services.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceHouston, TX, United StatesHQ checked Sep 29, 2026501-1,000269 contacts →

Indirect evidence

“Growth exposes financial weakness.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceNew Delhi, IndiaHQ checked Sep 29, 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 29, 2026
10Partial evidenceAhmedabad, IndiaHQ checked Sep 29, 2026201-500201 contacts →

Partial evidence

“Inventyv Software Services Pvt.”

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceRosenheim, GermanyHQ checked Sep 29, 2026201-500152 contacts →

Partial evidence

“Agenda ist einer der führenden Software-Anbieter für die steuer- und wirtschaftsberatenden Berufe.”

Source: RevenueBase Database · checked Sep 29, 2026
12Partial evidenceSao Paulo, BrazilHQ checked Sep 29, 202651-200145 contacts →

Partial evidence

“A Certacon nasceu da união de profissionais altamente experientes aliado aos melhores e mais completos softwares do mercado, com o propósito de prestar serviços nas áreas…”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 2026201-500135 contacts →

Partial evidence

“Wolters Kluwer Tax & Accounting Canada is a leading provider of expert solutions for tax, accounting, and audit professionals, offering industry-leading resources that utilize…”

Source: RevenueBase Database · checked Sep 29, 2026
14Strong evidenceNewport, United KingdomHQ checked Sep 29, 202651-200134 contacts →

Strong evidence

“Award winning accountants & tax advisors based in Newport, South Wales.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceBarueri, BrazilHQ checked Sep 29, 202651-200129 contacts →

Indirect evidence

“Bem-vindo à primeira #TaxTech da América Latina!”

Source: RevenueBase Database · checked Sep 29, 2026
16Indirect evidenceSão Paulo, BrazilHQ checked Sep 29, 2026201-500125 contacts →

Indirect evidence

“A Alliance é uma consultoria especializada na área fiscal e tributária, com mais de 25 anos de atuação.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceJoaçaba, BrazilHQ checked Sep 29, 2026201-500119 contacts →

Indirect evidence

“A Contassesc se destaca por fornecer serviços contábeis especializados, incluindo assessoria, consultoria e planejamento tributário.”

Source: RevenueBase Database · checked Sep 29, 2026
18Indirect evidenceTours, FranceHQ checked Sep 29, 202651-200110 contacts →

Indirect evidence

“Inqom c’est un logiciel moderne de production comptable et fiscale pensé pour la productivité, la qualité et la sécurité - Productivité : Nous pensons un monde où la productivité…”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceDallas, TX, United StatesHQ checked Sep 29, 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 29, 2026
20Partial evidence42-44 Bishopsgate, United KingdomHQ checked Sep 29, 202651-200104 contacts →

Partial evidence

“Online Accounting Service | Bookkeeping | Payroll | Personal Tax Return Filing to HMRC | Corporation Tax Filing | HMRC ONLINE FILING: Our aim is to help small business owners` tax…”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidenceHemel Hempstead, United KingdomHQ checked Sep 29, 2026501-1,000102 contacts →

Partial evidence

“SJD is now Caroola Accountancy!”

Source: RevenueBase Database · checked Sep 29, 2026
22Strong evidenceWokingham, United KingdomHQ checked Sep 29, 202651-200101 contacts →

Strong evidence

“The complete tax and accountancy practice software suite, powered by a single database.”

Source: RevenueBase Database · checked Sep 29, 2026
23Partial evidencePlano, TX, United StatesHQ checked Sep 29, 202651-200100 contacts →

Partial evidence

“At MyTaxFiler, we offer more than just tax preparation-we provide peace of mind.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceSao Paulo, BrazilHQ checked Sep 29, 202651-20097 contacts →

Indirect evidence

“A Ozai foi fundada em 31 de outubro de 1986 e, ao longo de sua trajetória, se firmou como um dos mais respeitados escritório de contabilidade do Brasil, prestando serviços…”

Source: RevenueBase Database · checked Sep 29, 2026
25Partial evidenceChicago, IL, United StatesHQ checked Sep 29, 2026501-1,00094 contacts →

Partial evidence

“Archer Lewis is your local trusted advisor for accounting and tax services.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 9,635 tax accountants for software companies worldwide

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Tax accountants for software companies worldwide at a glance

As of Sep 29, 2026
20.2%Verified-email coverage
11.7Average contacts per company
1-10Median size (employees)
1.4%Largest-city concentration · Sao Paulo
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
6,999
11-50
2,143
51-200
299
201-500
43
501-1,000
13
1,001-5,000
8
5,001-10,000
1
10001+
6

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 tax accountants for software 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 tax accountants for software companies are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “tax accountants for software 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 tax accountants for software 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 tax accountants for software 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, 22,758 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 29, 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.

Tax accountants for software companies by location

34 lists · largest first

Every Tax accountants for software 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 tax accountants for software 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 tax accountants for software companies are there worldwide?

RevenueBase identified 9,635 tax accountants for software 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?

H&r Block, headquartered in Kansas City, tops this list with the largest team on record.

Which country has the most tax accountants for software companies?

The United States leads with 3,883 companies, followed by Germany (732) and Brazil (710). Every tax accountants for software companies list by country and city is linked on this page.

Which city has the most tax accountants for software companies?

Sao Paulo leads with 132 headquartered companies, followed by New York (105) and London (102).

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 22,758 verified decision-maker contacts tracked across these 9,635 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 29, 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.