Company lists · Data refreshed September 2026

Top 25 Tax controversy law firms based in the United States

RevenueBase identified 1,672 company matches for tax controversy law firms associated with the United States as of September 2026 and tracks 10,611 professional contacts across them, including 4,262 with verified work emails. New York is the largest hub.

This list covers company matches for tax controversy law firms 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 September 29, 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 Sep 29, 2026 How this list was built
1,672Companies
10,611Contacts tracked
4,262Verified emails
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The 25 largest tax controversy law firms based in the United States

Ranked by team size
Top 25 of 1,672 company matches for tax controversy law firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchExton, PA, United StatesHQ recorded Sep 29, 2026501-1,000364 contacts →

Exact match

“Cohesive is a leading solutions provider and systems integrator for IBM Maximo.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchDallas, TX, United StatesHQ recorded Sep 29, 2026201-500224 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 · Sep 29, 2026 · View company records in RevenueBase
3Exact matchJacksonville, FL, United StatesHQ recorded Sep 29, 2026201-500175 contacts →

Exact match

“Since 2010, Community Tax has helped individuals and businesses across the United States navigate complex tax matters with clarity and confidence.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchWashington, DC, United StatesHQ recorded Sep 29, 202651-200155 contacts →

Exact match

“Zuckerman Spaeder LLP is consistently recognized as a leading national litigation boutique.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchBroomfield, CO, United StatesHQ recorded Sep 29, 202651-200131 contacts →

Exact match

“Your tax debt resolution partner.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchFolsom, CA, United StatesHQ recorded Sep 29, 2026201-500130 contacts →

Exact match

“TaxAudit.com is brought to you by the audit experts at TaxResources, Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchLos Angeles, CA, United StatesHQ recorded Sep 29, 202651-200124 contacts →

Exact match

“Anthem Tax Services (ATS) is one of the highest rated Tax Resolution Companies in the U.S, comprised of professionals who are passionate about representing taxpayers and fighting…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchLa Jolla, CA, United StatesHQ recorded Sep 29, 202651-200118 contacts →

Exact match

“Since 1985, we’ve built a firm where clients receive the highest quality of services, where our people play an important role as they grow professionally and where we as a firm…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchRound Rock, TX, United StatesHQ recorded Sep 29, 202651-20092 contacts →

Exact match

“MVBA is an established leader in providing professional, effective delinquent tax and non-tax related collection programs.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchNew York, NY, United StatesHQ recorded Sep 29, 202651-20092 contacts →

Exact match

“For more than 75 years, Kostelanetz LLP has built a global reputation as the law firm of choice for clients facing high-stakes controversies and negotiations with government…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchCypress, CA, United StatesHQ recorded Sep 29, 202651-20091 contacts →

Exact match

“Our mission is to provide our clients with the best in professional services, with an authentic personal approach.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchBroomfield, CO, United StatesHQ recorded Sep 29, 202651-20091 contacts →

Exact match

“Over the past 28 years, 20/20 Tax Resolution has helped over businesses and individuals reach successful resolutions with their IRS and state tax liabilities.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchCleveland, OH, United StatesHQ recorded Sep 29, 202651-20090 contacts →

Exact match

“What makes our nationally acclaimed law firm unique is our entrepreneurial spirit, team effort, and nimble approach.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchPlano, TX, United StatesHQ recorded Sep 29, 202651-20088 contacts →

Exact match

“Ryan Law is headquartered in Plano, Texas, with offices across the United States and Canada.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchMiami, FL, United StatesHQ recorded Sep 29, 202651-20082 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchAnnapolis, MD, United StatesHQ recorded Sep 29, 202651-20080 contacts →

Exact match

“Frost Law is comprised of skilled tax attorneys, business attorneys, litigation attorneys, estates attorneys, Certified Public Accountants, Certified Financial Planners, and other…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchNorman, OK, United StatesHQ recorded Sep 29, 202651-20076 contacts →

Exact match

“We are one of the largest tax resolution law firms in the nation.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchDenver, CO, United StatesHQ recorded Sep 29, 202651-20072 contacts →

Exact match

“Spicer Jeffries LLP specializes in the securities industry, providing clients with professional audit, tax, accounting, and consulting services.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchSunrise, FL, United StatesHQ recorded Sep 29, 202651-20070 contacts →

Exact match

“Neil Jesani Tax Advisors, Inc.(NJA) provides a full suite of tax, compliance, accounting, resolution and advisory services, drawing on extensive industry knowledge to serve high…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchCosta Mesa, CA, United StatesHQ recorded Sep 29, 202651-20069 contacts →

Exact match

“Ideal Tax Solution (ITS) was established with the ideal of helping clients who are suffering through a tax debt issue, easing the stress and anxiety that comes with serious tax…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchSpokane, WA, United StatesHQ recorded Sep 29, 2026201-50064 contacts →

Exact match

“Protecting Finances Leading Tax Debt Relief Experts | IRS & State Resolution Specialists Settle Tax Debt & Regain Stability We help individuals and businesses navigate complex tax…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchWalnut Creek, CA, United StatesHQ recorded Sep 29, 202651-20061 contacts →

Exact match

“Navolio & Tallman LLP offers both the technical expertise of a “Big Four” accounting firm and the personalized client service only a smaller firm provides.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchHenrico, VA, United StatesHQ recorded Sep 29, 202651-20061 contacts →

Exact match

“Taxing Authority Consulting Services, P.C.(TACS) is a Virginia law firm dedicated to serving government clients across the Commonwealth.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchJacksonville, FL, United StatesHQ recorded Sep 29, 202651-20060 contacts →

Exact match

“With offices in Jacksonville, Orlando, and throughout the United States, J.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchNew York, NY, United StatesHQ recorded Sep 29, 202611-5059 contacts →

Exact match

“Our mission is to become your trusted business advisors, assisting you in every way necessary to help you achieve your financial goals.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 1,672 tax controversy law firms based in the United States

See the full list, filter by size, metro and specialty, and access 4,262 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Tax controversy law firms based in the United States at a glance

As of Sep 29, 2026
40.2%Verified-email coverage
6.3Average contacts per company
1-10Median size (employees)
3.6%Largest-city concentration · New York
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
1,226
11-50
349
51-200
70
201-500
14
501-1,000
3

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 1,672 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 controversy law 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. 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 4,262 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 29, 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.

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 controversy law firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tax controversy law firms are there based in the United States?

RevenueBase identified 1,672 company matches for tax controversy law firms associated with the United States 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?

Cohesive tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most tax controversy law firms?

New York leads with 60 company records, followed by Houston (48) and Los Angeles (38).

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 4,262 professional contacts with verified work emails tracked across these 1,672 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 29, 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.