Company lists · Data refreshed September 2026

Top 25 Audit defense firms based in the United States

Name: Audit defense firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 2,609 companies tracked

RevenueBase identified 2,609 audit defense firms headquartered in the United States as of September 2026 and tracks 27,435 professional contacts across them, including 13,791 with verified work emails. New York is the largest hub.

This list covers audit defense firms headquartered in the United States, 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 30, 2026.

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 30, 2026 86% judged on-target in blind review

2,609Companies

27,435Contacts tracked

13,791Verified emails

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The 25 largest audit defense firms based in the United States

Ranked by team size

Top 25 of 2,609 audit defense firms based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to audit defense 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	RYAN	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 30, 2026	5,001-10,000	6,089 contacts →
	Indirect 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 30, 2026
2	DMA	Indirect evidence	Fort Wayne, IN, United StatesHQ checked Sep 30, 2026	501-1,000	861 contacts →
	Indirect evidence “Great Place to Work® Certified™ DMA, a proudly employee-owned company, has been solving corporate tax challenges for its clients since 1972.” Source: RevenueBase Database · checked Sep 30, 2026
3	Bennett Thrasher	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 30, 2026	201-500	558 contacts →
	Partial evidence “Bennett Thrasher provides proven guidance for financial confidence through premier tax, audit, advisory, and outsourcing solutions.” Source: RevenueBase Database · checked Sep 30, 2026
4	Sensiba LLP	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 30, 2026	501-1,000	493 contacts →
	Indirect 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 30, 2026
5	Smith Howard	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 30, 2026	501-1,000	413 contacts →
	Indirect evidence “Smith + Howard is a tax, accounting, advisory, and consulting firm headquartered in Atlanta, with a global presence.” Source: RevenueBase Database · checked Sep 30, 2026
6	Cohesive	Indirect evidence	Exton, PA, United StatesHQ checked Sep 30, 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 30, 2026
7	Squire	Partial evidence	Orem, UT, United StatesHQ checked Sep 30, 2026	201-500	297 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 30, 2026
8	Mayatax	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	269 contacts →
	Indirect evidence “Growth exposes financial weakness.” Source: RevenueBase Database · checked Sep 30, 2026
9	TAX Management Associates, INC	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 30, 2026	51-200	266 contacts →
	Indirect evidence “With over 550 clients in 24 states, Tax Management Associates (TMA) is a leader in assisting state and local governments to maximize their revenue streams.” Source: RevenueBase Database · checked Sep 30, 2026
10	Calibre CPA Group, Pllc	Indirect evidence	Bethesda, MD, United StatesHQ checked Sep 30, 2026	201-500	254 contacts →
	Indirect evidence “Calibre CPA Group is a national accounting and advisory firm serving associations, not-for-profit organizations, labor unions, employee benefit plans, and business enterprises.” Source: RevenueBase Database · checked Sep 30, 2026
11	GRF Cpas & Advisors	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 30, 2026	51-200	243 contacts →
	Partial evidence “Headquartered in the Washington, DC metropolitan region, GRF CPAs & Advisors (GRF) is a full-service professional services firm providing clients with audit and assurance, tax…” Source: RevenueBase Database · checked Sep 30, 2026
12	KE Andrews	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 30, 2026	201-500	224 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 30, 2026
13	Hutchinson And Bloodgood LLP	Indirect evidence	Glendale, CA, United StatesHQ checked Sep 30, 2026	51-200	187 contacts →
	Indirect evidence “Hutchinson and Bloodgood LLP is a leading firm of Certified Public Accountants and Consultants providing Tax Planning, Auditing, Technology Consulting, Human Resources and…” Source: RevenueBase Database · checked Sep 30, 2026
14	Lsl, LLP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 30, 2026	51-200	178 contacts →
	Indirect evidence “LSL provides solid guidance, support & solutions to businesses, governments and non-profits.” Source: RevenueBase Database · checked Sep 30, 2026
15	Brady Ware & Company	Indirect evidence	Miamisburg, OH, United StatesHQ checked Sep 30, 2026	51-200	175 contacts →
	Indirect evidence “Advisory and accountancy for today’s small- to mid-market businesses offering solutions for tax and assurance compliance, business performance, valuation, IRS disputes &…” Source: RevenueBase Database · checked Sep 30, 2026
16	Legacy Professionals LLP	Indirect evidence	Westchester, IL, United StatesHQ checked Sep 30, 2026	51-200	174 contacts →
	Indirect evidence “Legacy Professionals LLP, headquartered in Westchester, IL, with offices in Schererville, IN, and Edina, MN, is a Certified Public Accounting firm serving clients nationwide.” Source: RevenueBase Database · checked Sep 30, 2026
17	Wilkinguttenplan	Indirect evidence	East Brunswick, NJ, United StatesHQ checked Sep 30, 2026	51-200	172 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
18	Efpr, A Springline Company	Indirect evidence	Rochester, NY, United StatesHQ checked Sep 30, 2026	51-200	158 contacts →
	Indirect evidence “EFPR, a Springline company, is one of Western New York’s largest accounting and business consulting firms serving clients across the United States and around the globe.” Source: RevenueBase Database · checked Sep 30, 2026
19	Funaro & CO	Indirect evidence	New York, NY, United StatesHQ checked Sep 30, 2026	51-200	146 contacts →
	Indirect evidence “Founded in 1947, Funaro & Co.” Source: RevenueBase Database · checked Sep 30, 2026
20	CCK Strategies	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 30, 2026	51-200	144 contacts →
	Indirect evidence “CCK STRATEGIES is a business advisory and public accounting firm committed to helping entrepreneurial clients thrive.” Source: RevenueBase Database · checked Sep 30, 2026
21	Haskell & White LLP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 30, 2026	51-200	133 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 2026
22	KWC Cpas	Indirect evidence	Alexandria, VA, United StatesHQ checked Sep 30, 2026	51-200	133 contacts →
	Indirect evidence “KWC is a team of accountants and advisors all dedicated to the founding principle of providing Quality Personal Service.” Source: RevenueBase Database · checked Sep 30, 2026
23	Taxaudit	Partial evidence	Folsom, CA, United StatesHQ checked Sep 30, 2026	201-500	130 contacts →
	Partial evidence “TaxAudit.com is brought to you by the audit experts at TaxResources, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
24	Disanto, Priest & CO	Indirect evidence	Warwick, RI, United StatesHQ checked Sep 30, 2026	51-200	127 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 30, 2026
25	Mcgill, Power, Bell & Associates, LLP	Indirect evidence	Meadville, PA, United StatesHQ checked Sep 30, 2026	51-200	121 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 30, 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: audit defense 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 audit defense firms.
Partial evidence: Its own public description names part of audit defense firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name audit defense 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 2,609 audit defense firms based in the United States

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Audit defense firms based in the United States at a glance

As of Sep 30, 2026

50.3%Verified-email coverage

10.5Average contacts per company

1-10Median size (employees)

3.1%Largest-city concentration · New York

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

1,796

11-50

643

51-200

115

201-500

501-1,000

1,001-5,000

5,001-10,000

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 2,609 companies.

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 audit defense 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.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “audit defense 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 audit defense 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 audit defense firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
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, 13,791 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 30, 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.

Audit defense firms by metro

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 audit defense 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 audit defense firms are there based in the United States?

RevenueBase identified 2,609 audit defense firms headquartered in the United States 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?

RYAN, headquartered in Dallas, tops this list with the largest team on record.

Which city has the most audit defense firms?

New York leads with 82 headquartered companies, followed by Houston (69) and Los Angeles (42).

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 13,791 verified decision-maker contacts tracked across these 2,609 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 30, 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.