Company lists · Data refreshed September 2026
Top 25 Tax audit services based in the United States
RevenueBase identified 3,389 tax audit services headquartered in the United States as of September 2026 and tracks 20,992 professional contacts across them, including 7,080 with verified work emails. Houston is the largest hub.
This list covers tax audit services 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 21, 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.
The 25 largest tax audit services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 364 contacts → | ||||
Indirect evidence “Cohesive is a leading solutions provider and systems integrator for IBM Maximo.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 347 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 297 contacts → | ||||
Strong evidence “Squire is a nationally recognized audit, tax, and business advisory firm serving clients across the U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 282 contacts → | ||||
Indirect evidence “Listen, then advise.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 269 contacts → | ||||
Indirect evidence “Growth exposes financial weakness.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 266 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 151 contacts → | ||||
Indirect evidence “Lumsden McCormick CPA is located in the newly renovated Cyclorama Building in downtown Buffalo.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 146 contacts → | ||||
Indirect evidence “Founded in 1947, Funaro & Co.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 135 contacts → | ||||
Partial evidence “Founded in 1982, ATKG specializes in tax, accounting, assurance and advisory services for a select client base of closely held businesses and large family groups.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 133 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 133 contacts → | ||||
Indirect evidence “Sisterson is one of the largest independently-owned certified public accounting and financial consulting firms in the Pittsburgh area.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 130 contacts → | ||||
Partial evidence “TaxAudit.com is brought to you by the audit experts at TaxResources, Inc.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 129 contacts → | ||||
Indirect evidence “Since 1948, Draffin & Tucker has supplied a full range of professional accounting services to small businesses, large corporations, individuals, government entities, nonprofit…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 110 contacts → | ||||
Strong evidence “Protection Plus provides top-tier tax resolution services, offering up to in services to resolve IRS notices, inquiries, and audits.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 102 contacts → | ||||
Indirect evidence “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.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 102 contacts → | ||||
Strong evidence “R&M is a boutique consulting firm that works in two key areas: tax and internal audit.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 92 contacts → | ||||
Partial evidence “HCJ CPAs and Advisors provides knowledgeable auditing, tax and business consulting services that companies need in today’s business climate.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 90 contacts → | ||||
Partial evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 87 contacts → | ||||
Strong evidence “HRSS is a full-service accounting, tax, audit, and advisory firm with 40 years of experience serving businesses and individuals, with a focus on middle-market clients.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 86 contacts → | ||||
Partial evidence “Haefele Flanagan, founded in 1967, is a full service consulting, accounting, auditing, and tax service firm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 85 contacts → | ||||
Partial evidence “Crescent Tax Filing, Inc- Your Trusted Partner in US #Tax Services for Over 7 Years Welcome to Crescent Tax Filing, Inc, your go-to destination for comprehensive US Tax…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 85 contacts → | ||||
Partial evidence “We provide "full-service" financial accounting services, including compilations, reviews, and audits of financial statements for all sizes of closely held businesses, non-profit…” 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 audit services. 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 audit services.
- Partial evidence
- Its own public description names part of tax audit services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name tax audit services. 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 3,389 tax audit services based in the United States
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Tax audit services based in the United States at a glance
As of Sep 21, 2026Companies by employee count
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 3,389 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 tax audit services, 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 “tax audit services”. 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 audit services), 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 audit services, 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, 7,080 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 audit services 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 tax audit services, 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 audit services are there based in the United States?
RevenueBase identified 3,389 tax audit services 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?
Cohesive, headquartered in Exton, tops this list with the largest team on record.
Which city has the most tax audit services?
Houston leads with 77 headquartered companies, followed by New York (75) and Miami (45).
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 7,080 verified decision-maker contacts tracked across these 3,389 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.
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