Company lists · Data refreshed September 2026
Top 25 Tax accounting software companies worldwide
RevenueBase identified 461 tax accounting software companies worldwide as of September 2026 and tracks 12,503 professional contacts across them, including 3,852 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.
This list covers tax accounting 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 21, 2026. Country and city lists for tax accounting 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.
The 25 largest tax accounting software companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,587 contacts → | ||||
Strong evidence “Wolters Kluwer Tax & Accounting U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 561 contacts → | ||||
Strong evidence “Drake Software, a private company founded in 1977, provides software solutions to over tax and accounting firms that file more than 40 million tax returns every year.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 536 contacts → | ||||
Partial evidence “Fundada em 1987, a CONTMATIC PHOENIX é uma Empresa em grande expansão nacional especializada no desenvolvimento de Softwares Administrativos, oferecendo soluções necessárias e…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 361 contacts → | ||||
Partial evidence “TaxAct helps everyday Americans get every tax advantage they deserve by finding credits and deductions they never even knew existed.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 309 contacts → | ||||
Strong evidence “Winman Software India LLP, based in Mangaluru, is engaged in developing and distributing standardized software products with a special focus on income tax software for the Indian…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 302 contacts → | ||||
Partial evidence “TTI’s flagship product, Tax Series, is an all-inclusive SaaS solution that can handle all aspects of U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 298 contacts → | ||||
Partial evidence “Desde 1986 a Prosoft desenvolve softwares para apoiar empresários contábeis a aconselhar seus clientes com rapidez, precisão e eficiência.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 289 contacts → | ||||
Indirect evidence “SurePrep was founded in 2002 and is the leader in 1040 productivity for CPA firms.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 289 contacts → | ||||
Strong evidence “For 60 years, TaxSlayer has been empowering Americans to take control of their taxes with easy-to-use, reliable software backed by U.S-based support.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 240 contacts → | ||||
Strong evidence “SNI is a Computer Technology Corporation providing Tax Compliance and Regulatory Reporting softwares, interfaces and technologies around the world.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 235 contacts → | ||||
Indirect evidence “Reckon is one of Australia’s leading business technology companies, and a certified Great Place to Work.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 211 contacts → | ||||
Indirect evidence “Spécialisée dans la création, l’édition et la commercialisation de logiciels innovants en matière de gestion comptable, sociale et fiscale, la SAS EIC (CA 5,3 M€, 110 pers) dont…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 201 contacts → | ||||
Partial evidence “Inventyv Software Services Pvt.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 187 contacts → | ||||
Indirect evidence “Desde 2009, oferecemos soluções inteligentes que aprimoram a rotina de trabalho de profissionais contábeis e tributários, auxiliando na identificação de inconsistências e…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 174 contacts → | ||||
Strong evidence “Wolters Kluwer, TAA North America US Small Firms is part of Wolters Kluwer Tax & Accounting.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 152 contacts → | ||||
Partial evidence “Agenda ist einer der führenden Software-Anbieter für die steuer- und wirtschaftsberatenden Berufe.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 138 contacts → | ||||
Indirect evidence “We are game changers.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 136 contacts → | ||||
Strong evidence “CrossLink Professional Tax Solutions (CPTS) is a leading provider of professional tax software solutions for professional tax preparers across the United States.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 135 contacts → | ||||
Strong 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 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 110 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 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 104 contacts → | ||||
Strong evidence “Holistiplan, a tax planning software solution, helps financial planners be more comprehensive AND more efficient.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 103 contacts → | ||||
Indirect evidence “Siga a página oficial do Grupo IOB:” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 101 contacts → | ||||
Strong evidence “The complete tax and accountancy practice software suite, powered by a single database.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 94 contacts → | ||||
Indirect evidence “Há 35 anos, nossas soluções trazem a marca de uma empresa parceira dos profissionais de contabilidade, contribuindo para a evolução dos negócios com inovação, eficiência e…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 81 contacts → | ||||
Partial evidence “Declarando es el software con asesoría fiscal que ayuda a los autónomos a ahorrar en impuestos.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: tax accounting software companies. 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 tax accounting software companies.
- Partial evidence
- Its own public description names part of tax accounting software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name tax accounting software companies. 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 461 tax accounting software companies worldwide
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Tax accounting software companies worldwide at a glance
As of Sep 21, 2026Companies by employee count
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 accounting 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 accounting software companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “tax accounting 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 accounting 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 accounting 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, 3,852 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.
Tax accounting software companies by location
2 lists · largest firstEvery Tax accounting software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 accounting 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 accounting software companies are there worldwide?
RevenueBase identified 461 tax accounting 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?
Wolters Kluwer TAX & Accounting US, headquartered in New York, tops this list with the largest team on record.
Which country has the most tax accounting software companies?
The United States leads with 152 companies, followed by Brazil (45). Every tax accounting software companies list by country and city is linked on this page.
Which city has the most tax accounting software companies?
Sao Paulo leads with 12 headquartered companies, followed by New York (9) and Houston (6).
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 3,852 verified decision-maker contacts tracked across these 461 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.