Company lists · Data refreshed September 2026

Top 25 Managed IT services for tax firms worldwide

Name: Managed IT services for tax firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 11,783 companies tracked

RevenueBase identified 11,783 company matches for managed IT services for tax firms worldwide as of September 2026 and tracks 137,326 professional contacts across them, including 35,039 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers company matches for managed IT services for tax firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026. Country and city lists for managed IT services for tax firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

11,783Companies

137,326Contacts tracked

35,039Verified emails

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The 25 largest managed IT services for tax firms worldwide

Ranked by team size

Top 25 of 11,783 company matches for managed IT services for tax firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	H&r Block	Exact match	Kansas City, MO, United StatesHQ recorded Sep 28, 2026	10001+	59,451 contacts →
	Exact match “H&R Block’s purpose is simple: To provide help and inspire confidence in our clients and communities everywhere.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	RYAN	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	5,001-10,000	6,089 contacts →
	Exact match “Ryan, an award-winning global tax services and software provider, is the largest Firm in the world dedicated exclusively to business taxes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	DMA	Exact match	Fort Wayne, IN, United StatesHQ recorded Sep 28, 2026	501-1,000	861 contacts →
	Exact match “Great Place to Work® Certified™ DMA, a proudly employee-owned company, has been solving corporate tax challenges for its clients since 1972.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	TPX	Exact match	Austin, TX, United StatesHQ recorded Sep 28, 2026	1,001-5,000	751 contacts →
	Exact match “TPx is the reliable sidekick every growing business deserves, powering your tech while you take the lead.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	IT Solutions	Exact match	Fort Washington, PA, United StatesHQ recorded Sep 28, 2026	501-1,000	683 contacts →
	Exact match “With 30 years of experience as a trusted managed services provider, we're your dedicated partner in navigating the complex world of technology, so you can focus on growing your…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Chevez Ruiz Zamarripa	Exact match	Ciudad De Mexico, MexicoHQ recorded Sep 28, 2026	501-1,000	683 contacts →
	Exact match “Chevez Ruiz Zamarripa, es una firma especializada en la Asesoría y Consultoría Fiscal de alto nivel, que se distingue por prestar servicios personalizados con total…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	NIC	Exact match	Los Angeles, CA, United StatesHQ recorded Sep 28, 2026	n/a	581 contacts →
	Exact match “NIC has been providing IT Solutions, Cybersecurity, and Cloud Services for businesses and organizations for the past two decades.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Rightworks	Exact match	Nashua, NH, United StatesHQ recorded Sep 28, 2026	501-1,000	577 contacts →
	Exact match “Obsessed with all things accounting, Rightworks is the preferred cloud service provider for businesses and accounting and tax firms.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Integris	Exact match	Cranbury Township, NJ, United StatesHQ recorded Sep 28, 2026	501-1,000	574 contacts →
	Exact match “Integris is a national leader in future-ready Managed Services, delivering innovative solutions that drive digital maturity for small and midsize businesses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Lucidity Cloud Services	Exact match	Auckland, New ZealandHQ recorded Sep 28, 2026	n/a	545 contacts →
	Exact match “Managing IT systems can be complex and time-consuming, with security risks, outdated infrastructure, and inefficient processes holding your business back.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Ntiva, INC	Exact match	Mclean, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	505 contacts →
	Exact match “At Ntiva, growing people (our employees, partners, and clients) is our mission.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	Vc3	Exact match	Columbia, SC, United StatesHQ recorded Sep 28, 2026	501-1,000	495 contacts →
	Exact match “VC3 is a managed IT and cybersecurity services provider serving organizations throughout the US and Canada.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Meriplex	Exact match	Houston, TX, United StatesHQ recorded Sep 28, 2026	501-1,000	450 contacts →
	Exact match “If you’re a midsize enterprise with employees (i.e, an “MSE” according to Gartner), we know what you’re going through.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Smith Howard	Exact match	Atlanta, GA, United StatesHQ recorded Sep 28, 2026	501-1,000	413 contacts →
	Exact match “Smith + Howard is a tax, accounting, advisory, and consulting firm headquartered in Atlanta, with a global presence.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Apercen Partners LLC	Exact match	Palo Alto, CA, United StatesHQ recorded Sep 28, 2026	201-500	399 contacts →
	Exact match “Originating from the English and Latin roots of “apercu,” an act of insight, and “census,” an applied study of wealth and property, Apercen is a tax consulting firm offering high…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Gestión Tributaria Territorial	Exact match	Alicante, SpainHQ recorded Sep 28, 2026	501-1,000	395 contacts →
	Exact match “grupo gtt es una empresa tecnológica especializada en la gestión de tributos.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Computer Solutions	Exact match	San Antonio, TX, United StatesHQ recorded Sep 28, 2026	51-200	389 contacts →
	Exact match “Computer Solutions: Trusted Managed IT Services and Cybersecurity Partner in San Antonio, Texas For more than 46 years, Computer Solutions has helped businesses, schools…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Cohesive	Exact match	Exton, PA, United StatesHQ recorded Sep 28, 2026	501-1,000	364 contacts →
	Exact match “Cohesive is a leading solutions provider and systems integrator for IBM Maximo.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Taxdome	Exact match	Cheyenne, WY, United StatesHQ recorded Sep 28, 2026	201-500	340 contacts →
	Exact match “TaxDome is the leading practice management platform built for full-service tax, bookkeeping, and accounting firms.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Sagenext Infotech LLC	Exact match	Augusta, GA, United StatesHQ recorded Sep 28, 2026	51-200	323 contacts →
	Exact match “Sagenext, based in Augusta, GA, is a trusted provider of secure cloud hosting solutions for CPAs, accountants, tax professionals, and small businesses across the globe.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	1-800accountant	Exact match	New York, NY, United StatesHQ recorded Sep 28, 2026	201-500	320 contacts →
	Exact match “1-800Accoutant is America’s leading virtual accounting firm for small businesses.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Protech Services Group, INC	Exact match	Memphis, TN, United StatesHQ recorded Sep 28, 2026	51-200	296 contacts →
	Exact match “We know that CIOs, CISOs, CTOs, and IT Directors wear a lot of hats-navigating security threats, modernizing infrastructure, managing internal expectations, all while still…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Centre Technologies	Exact match	Houston, TX, United StatesHQ recorded Sep 28, 2026	201-500	286 contacts →
	Exact match “Centre is a modern IT and cybersecurity partner delivering Managed IT, Business Intelligence, Cybersecurity, and Cloud services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	GTM Global TAX Management	Exact match	Wayne, PA, United StatesHQ recorded Sep 28, 2026	201-500	281 contacts →
	Exact match “GTM is a leading provider of corporate tax services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	IPM	Exact match	Jericho, NY, PalestineHQ recorded Sep 28, 2026	51-200	278 contacts →
	Exact match “At IPM, we deliver custom technology solutions that empower businesses to thrive.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “managed IT services for tax firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 11,783 managed IT services for tax firms worldwide

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Managed IT services for tax firms worldwide at a glance

As of Sep 28, 2026

25.5%Verified-email coverage

11.7Average contacts per company

1-10Median size (employees)

1.3%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

7,976

11-50

3,092

51-200

465

201-500

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

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for managed IT services for tax firms are linked below.
What qualifies: Company records worldwide whose business descriptions match “managed IT services for tax firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 35,039 professional contacts with verified work emails across the full matched dataset. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Managed IT services for tax firms by location

49 lists · largest first

Every Managed IT services for tax 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 SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “managed IT services for tax firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many managed IT services for tax firms are there worldwide?

RevenueBase identified 11,783 company matches for managed IT services for tax firms worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

H&r Block tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most managed IT services for tax firms?

The United States leads with 5,807 companies, followed by Germany (1,302) and Canada (553). Every managed IT services for tax firms list by country and city is linked on this page.

Which city has the most managed IT services for tax firms?

New York leads with 159 company records, followed by Houston (126) and London (101).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 35,039 professional contacts with verified work emails tracked across these 11,783 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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 SmartSearch, 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.