Company lists · Data refreshed November 2026

Top 25 Tax audit support services based in the United States

Name: Tax audit support services based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 5,589 companies tracked

RevenueBase identified 5,589 company matches for tax audit support services associated with the United States as of November 2026 and tracks 101,405 professional contacts across them, including 22,159 with verified work emails. New York is the largest hub.

This list covers company matches for tax audit support services associated with the United States, 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 November 6, 2026.

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 Nov 6, 2026 How this list was built

5,589Companies

101,405Contacts tracked

22,159Verified emails

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The 25 largest tax audit support services based in the United States

Ranked by team size

Top 25 of 5,589 company matches for tax audit support services based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 2026	10001+	64,430 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 · Nov 6, 2026 · View company records in RevenueBase
2	RYAN	Exact match	Dallas, CT, United StatesHQ recorded Nov 6, 2026	5,001-10,000	6,580 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 · Nov 6, 2026 · View company records in RevenueBase
3	Dean Dorton	Exact match	Lexington, KY, United StatesHQ recorded Nov 6, 2026	501-1,000	619 contacts →
	Exact match “Dean Dorton provides an integrated suite of audit, tax, business management, consulting, and technology solutions.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4	Brown Edwards	Exact match	Roanoke, VA, United StatesHQ recorded Nov 6, 2026	201-500	517 contacts →
	Exact match “Providing Professional Business Advisory and Consulting Services including tax, accounting and IT services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5	Smith Howard	Exact match	Atlanta, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	505 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 · Nov 6, 2026 · View company records in RevenueBase
6	Cohesive	Exact match	Exton, GA, United StatesHQ recorded Nov 6, 2026	501-1,000	386 contacts →
	Exact match “Cohesive is a leading solutions provider and systems integrator for IBM Maximo.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7	Advantage ONE TAX Consulting	Exact match	Sterling, VA, United StatesHQ recorded Nov 6, 2026	201-500	360 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Squire	Exact match	Orem, UT, United StatesHQ recorded Nov 6, 2026	201-500	337 contacts →
	Exact match “Squire is a nationally recognized audit, tax, and business advisory firm serving clients across the U.S.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9	Mayatax	Exact match	Houston, TX, United StatesHQ recorded Nov 6, 2026	501-1,000	251 contacts →
	Exact match “Growth exposes financial weakness.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	KE Andrews	Exact match	Dallas, TX, United StatesHQ recorded Nov 6, 2026	201-500	234 contacts →
	Exact match “In operation since 1978, KE Andrews is one of the largest state and local tax firms in the country, managing over $500 billion in assets.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	Legacy Professionals LLP	Exact match	Westchester, MN, United StatesHQ recorded Nov 6, 2026	51-200	189 contacts →
	Exact match “Legacy Professionals LLP, headquartered in Westchester, IL, with offices in Schererville, IN, and Edina, MN, is a Certified Public Accounting firm serving clients nationwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	Geffen Mesher	Exact match	Portland, OR, United StatesHQ recorded Nov 6, 2026	51-200	175 contacts →
	Exact match “We’re a Portland-based accounting firm with a 90+ year legacy, and we’re continuing to grow and evolve every day.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Funaro & CO	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	51-200	148 contacts →
	Exact match “Founded in 1947, Funaro & Co.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Konnect Books & Taxes- Virtual CFO & USA TAX Consultants	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	51-200	147 contacts →
	Exact match “Konnect Books & Taxes, is an International Bookkeeping, Tax & Advisory firm, in the USA, with CPAs & Accountants, ready to help CPA firms and businesses take care of ALL their…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	KWC Cpas	Exact match	Alexandria, VA, United StatesHQ recorded Nov 6, 2026	51-200	142 contacts →
	Exact match “KWC is a team of accountants and advisors all dedicated to the founding principle of providing Quality Personal Service.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	Haskell & White LLP	Exact match	Irvine, CA, United StatesHQ recorded Nov 6, 2026	51-200	140 contacts →
	Exact match “Haskell & White LLP is one of the largest independently owned accounting, auditing and tax consulting firms in Southern California, specializing in servicing public and private…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Taxaudit	Exact match	Folsom, CA, United StatesHQ recorded Nov 6, 2026	201-500	137 contacts →
	Exact match “TaxAudit.com is brought to you by the audit experts at TaxResources, Inc.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Draffin Tucker	Exact match	Albany, SC, United StatesHQ recorded Nov 6, 2026	51-200	136 contacts →
	Exact match “Since 1948, Draffin & Tucker has supplied a full range of professional accounting services to small businesses, large corporations, individuals, government entities, nonprofit…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	Mcgill, Power, Bell & Associates, LLP	Exact match	Meadville, PA, United StatesHQ recorded Nov 6, 2026	51-200	121 contacts →
	Exact match “McGill, Power, Bell & Associates, LLP (“MPB”) is a public accounting firm with five Pennsylvania offices located in the cities of Erie, Franklin, Grove City, Meadville, and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	Mytaxfiler	Exact match	Plano, CA, United StatesHQ recorded Nov 6, 2026	51-200	115 contacts →
	Exact match “At MyTaxFiler, we offer more than just tax preparation-we provide peace of mind.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	George Dimov, CPA	Exact match	New York, TX, United StatesHQ recorded Nov 6, 2026	11-50	113 contacts →
	Exact match “About us- United States Certified Public Accountant with IRS e-file - Registered IRS Tax Preparer with valid PTIN for all 50 states - 10+ years experience in accounting - 5 star…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	Archer Lewis	Exact match	Chicago, MO, United StatesHQ recorded Nov 6, 2026	501-1,000	112 contacts →
	Exact match “Archer Lewis is your local trusted advisor for accounting and tax services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Protection Plus	Exact match	Winston Salem, NC, United StatesHQ recorded Nov 6, 2026	51-200	112 contacts →
	Exact match “Protection Plus provides top-tier tax resolution services, offering up to in services to resolve IRS notices, inquiries, and audits.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	R&m Consulting	Exact match	Chicago, IL, United StatesHQ recorded Nov 6, 2026	51-200	107 contacts →
	Exact match “R&M is a boutique consulting firm that works in two key areas: tax and internal audit.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Bartlett, Pringle & Wolf, LLP	Exact match	Santa Barbara, CA, United StatesHQ recorded Nov 6, 2026	51-200	106 contacts →
	Exact match “Bartlett, Pringle & Wolf, LLP is the leading accounting and consulting firm on the Central Coast of California providing a collection of premium services to support your lifestyle.” Recorded in the RevenueBase company graph · Nov 6, 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 “tax audit support services”. 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 5,589 tax audit support services based in the United States

See the full list, filter by size, metro and specialty, and access 22,159 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Tax audit support services based in the United States at a glance

As of Nov 6, 2026

21.9%Verified-email coverage

18.1Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

4,242

11-50

1,047

51-200

170

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 5,589 companies.

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.
What qualifies: Company records associated with the United States whose business descriptions match “tax audit support services” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 22,159 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 November 6, 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.

Tax audit support services by metro

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 “tax audit support services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tax audit support services are there based in the United States?

RevenueBase identified 5,589 company matches for tax audit support services associated with the United States as of November 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 city has the most tax audit support services?

New York leads with 153 company records, followed by Houston (125) and Miami (78).

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 22,159 professional contacts with verified work emails tracked across these 5,589 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 November 6, 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.