Company lists · Data refreshed September 2026

Top 22 Tax controversy law firms based in New York, United States

RevenueBase identified 57 tax controversy law firms headquartered in New York, United States as of September 2026 and tracks 471 professional contacts across them, including 176 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers tax controversy law firms headquartered in New York, 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 29, 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 29, 2026 86% judged on-target in blind review
57Companies
471Contacts tracked
176Verified emails
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The 22 largest tax controversy law firms based in New York, United States

Ranked by team size
Top 22 of 57 tax controversy law firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to tax controversy law 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceNew York, NY, United StatesHQ checked Sep 29, 202651-20092 contacts →

Strong evidence

“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…”

Source: RevenueBase Database · checked Sep 29, 2026
2Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-5059 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
3Strong evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-5039 contacts →

Strong evidence

“The New York City based property tax law firm focuses on real estate tax certiorari and assessment appeals.”

Source: RevenueBase Database · checked Sep 29, 2026
4Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-5031 contacts →

Partial evidence

“Grant, Herrmann, Schwartz & Klinger LLP is a private client services law firm with offices located in New York and Florida.”

Source: RevenueBase Database · checked Sep 29, 2026
5Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-5019 contacts →

Partial evidence

“Property taxes are a major expense for most companies.”

Source: RevenueBase Database · checked Sep 29, 2026
6Strong evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-5013 contacts →

Strong evidence

“State Tax Law is dedicated to providing exceptional quality tax advice and representation to our clients.”

Source: RevenueBase Database · checked Sep 29, 2026
7Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-1012 contacts →

Indirect evidence

“For over 40 years, C.”

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-509 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-108 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
10Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-106 contacts →

Partial evidence

“Tax Firm specializing in multi-member real estate transactions, corporate tax restructuring, tax strategies for corporation, subsidiaries, LLC and trusts.”

Source: RevenueBase Database · checked Sep 29, 2026
11Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-104 contacts →

Partial evidence

“Detaxify represents clients before the IRS and state tax authorities.”

Source: RevenueBase Database · checked Sep 29, 2026
12Strong evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-503 contacts →

Strong evidence

“The New York City law firm of Brandt, Steinberg, Lewis & Blond LLP has provided experienced tax law representation since 1932.”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 202611-503 contacts →

Partial evidence

“At Sales Tax Helper, we empower businesses to navigate sales tax complexities with confidence-turning audits, disputes, and compliance challenges into manageable solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
14Strong evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-103 contacts →

Strong evidence

“Mackay, Caswell & Callahan, P.C, is a tax, business and estate law firm providing clients tax resolution, tax relief and planning solutions since 1961.”

Source: RevenueBase Database · checked Sep 29, 2026
15Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-103 contacts →

Partial evidence

“Our law firm focuses on domestic and international taxation, real estate, corporate, immigration, and trust and estate matters.”

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-103 contacts →

Partial evidence

“Tax Preparation, Audit Representation, Retirement Planning & More!”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
18Strong evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-102 contacts →

Strong evidence

“Feingold & Alpert is a premier tax boutique law firm based in New York City.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-102 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026
20Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

“Sebastian A.”

Source: RevenueBase Database · checked Sep 29, 2026
21Partial evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-101 contacts →

Partial evidence

“Hutton Solomon & Blane PC is a boutique law firm that specializes in the area of state and local taxation.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceNew York, NY, United StatesHQ checked Sep 29, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 29, 2026

Showing 22 of 57 tax controversy law firms based in New York, United States

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Tax controversy law firms based in New York, United States at a glance

As of Sep 29, 2026
37.4%Verified-email coverage
8.3Average contacts per company
1-10Median size (employees)
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
42
11-50
12
51-200
2
501-1,000
1

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 57 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 controversy law 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 New York, United States whose own description of what they do matches “tax controversy law 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 tax controversy law 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 tax controversy law firms, and records with no verified work email. Companies headquartered outside New York 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, 176 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 29, 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.

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 controversy law 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 tax controversy law firms are there based in New York, United States?

RevenueBase identified 57 tax controversy law firms headquartered in New York, 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?

Kostelanetz LLP, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most tax controversy law firms?

New York leads the United States with 60 headquartered companies, 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 the top results, verified emails and direct dials included. Upgrading unlocks all 176 verified decision-maker contacts tracked across these 57 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 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 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.