Company lists · Data refreshed September 2026

Top 25 Business advisory and consulting firms based in New York, United States

Name: Business advisory and consulting firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 1,895 companies tracked

RevenueBase identified 1,895 business advisory and consulting firms headquartered in New York, United States as of September 2026 and tracks 62,069 professional contacts across them, including 33,810 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers business advisory and consulting 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 23, 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 23, 2026 86% judged on-target in blind review

1,895Companies

62,069Contacts tracked

33,810Verified emails

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The 25 largest business advisory and consulting firms based in New York, United States

Ranked by team size

Top 25 of 1,895 business advisory and consulting firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business advisory and consulting 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	Alvarez & Marsal	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	13,099 contacts →
	Indirect evidence “Alvarez & Marsal is a leading global professional services firm dedicated to helping organizations tackle their most complex business issues, maximize stakeholder value, and…” Source: RevenueBase Database · checked Sep 23, 2026
2	KROLL	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	5,001-10,000	6,287 contacts →
	Partial evidence “As the leading independent provider of risk and financial advisory solutions, Kroll leverages our unique insights, data and technology to help clients stay ahead of complex…” Source: RevenueBase Database · checked Sep 23, 2026
3	Strategy	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	5,082 contacts →
	Indirect evidence “From strategy to execution.” Source: RevenueBase Database · checked Sep 23, 2026
4	Eisneramper	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	4,199 contacts →
	Partial evidence “EisnerAmper, one of the largest business consulting firms in the world, is comprised of EisnerAmper LLP, a licensed independent CPA firm that provides client attest services; and…” Source: RevenueBase Database · checked Sep 23, 2026
5	Lazard	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,912 contacts →
	Partial evidence “Founded in 1848, Lazard is the preeminent financial advisory and asset management firm, with operations in North and South America, Europe, the Middle East, Asia, and Australia.” Source: RevenueBase Database · checked Sep 23, 2026
6	Alixpartners	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	3,583 contacts →
	Indirect evidence “For more than forty years, AlixPartners has helped businesses around the world respond quickly and decisively to their most critical challenges – circumstances as diverse as…” Source: RevenueBase Database · checked Sep 23, 2026
7	Citrin Cooperman	Indirect evidence	New York, United StatesHQ checked Sep 23, 2026	1,001-5,000	2,996 contacts →
	Indirect evidence “Citrin Cooperman is one of the nation’s largest and fastest-growing professional services firms.” Source: RevenueBase Database · checked Sep 23, 2026
8	Uhy-Us	Strong evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	2,035 contacts →
	Strong evidence “UHY is one of the nation’s largest professional services firms providing audit, tax, consulting and advisory services to clients primarily in the dynamic middle market.” Source: RevenueBase Database · checked Sep 23, 2026
9	Marcum LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	5,001-10,000	1,332 contacts →
	Indirect evidence “As of November 1, 2024, Marcum has been acquired by CBIZ.” Source: RevenueBase Database · checked Sep 23, 2026
10	Nassau Street Partners	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	n/a	904 contacts →
	Partial evidence “Nassau Street Partners is an independent capital advisory firm focused on mergers and acquisitions, capital markets advisory, and strategic financial solutions for early-stage and…” Source: RevenueBase Database · checked Sep 23, 2026
11	Perella Weinberg	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	501-1,000	883 contacts →
	Indirect evidence “Perella Weinberg is a leading global independent financial services firm, founded in 2006 to address the need for experienced, trusted and unconflicted advice in the financial…” Source: RevenueBase Database · checked Sep 23, 2026
12	The Vertex Companies LLC	Strong evidence	New York, NY, United StatesHQ checked Sep 23, 2026	501-1,000	765 contacts →
	Strong evidence “The Vertex Companies, LLC is a global consulting firm that provides strategic advisory, project management, and dispute resolution services for organizations that face complex…” Source: RevenueBase Database · checked Sep 23, 2026
13	Anchin	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	501-1,000	602 contacts →
	Partial evidence “Effective July 1, 2026, Anchin combined with Baker Tilly, a leading advisory, tax, and assurance firm with a national and global presence across major U.S.” Source: RevenueBase Database · checked Sep 23, 2026
14	Prager Metis Cpas	Partial evidence	New York, United StatesHQ checked Sep 23, 2026	201-500	467 contacts →
	Partial evidence “Prager Metis CPAs is an independent, full service, public accounting and consulting firm.” Source: RevenueBase Database · checked Sep 23, 2026
15	WISS	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	201-500	464 contacts →
	Indirect evidence “At Wiss, we believe there’s more to accounting than just balancing the books.” Source: RevenueBase Database · checked Sep 23, 2026
16	Keystone	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	201-500	423 contacts →
	Partial evidence “Keystone is an innovative strategy, economics, and technology consulting firm delivering transformative ideas and novel solutions to global brands and law firms on leading-edge…” Source: RevenueBase Database · checked Sep 23, 2026
17	Phronesis Partners	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	201-500	337 contacts →
	Indirect evidence “At Phronesis Partners, we turn complexity into clarity for the world's leading organizations.” Source: RevenueBase Database · checked Sep 23, 2026
18	Geller	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	310 contacts →
	Partial evidence “Geller provides financial services and strategic advisory to private companies and not-for-profit organizations.” Source: RevenueBase Database · checked Sep 23, 2026
19	Industri	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	n/a	292 contacts →
	Indirect evidence “Construction Sector/B2B Brand Strategy, Marketing & Business Development INDUSTRI® is a multi-faceted business development consultancy that focuses on key areas of an organization…” Source: RevenueBase Database · checked Sep 23, 2026
20	Cbiz Marks Paneth	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	501-1,000	289 contacts →
	Indirect evidence “CBIZ Marks Paneth, formerly known as Marks Paneth LLP, joined CBIZ and Mayer Hoffman McCann P.C.(MHM) in January 2022.” Source: RevenueBase Database · checked Sep 23, 2026
21	AON Inpoint	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	10001+	252 contacts →
	Indirect evidence “Aon plc (NYSE:AON) is a leading global professional services firm providing a broad range of risk, retirement and health solutions.” Source: RevenueBase Database · checked Sep 23, 2026
22	Friedman LLP	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	1,001-5,000	203 contacts →
	Partial evidence “Effective September 1, 2022, Friedman LLP is now Marcum – creating one of the most innovative accounting and advisory firms in the U.S.” Source: RevenueBase Database · checked Sep 23, 2026
23	Horwath HTL	Indirect evidence	New York, NY, United StatesHQ checked Sep 23, 2026	201-500	198 contacts →
	Indirect evidence “Bold steps forward.” Source: RevenueBase Database · checked Sep 23, 2026
24	Research Nester Analytics	Partial evidence	New York, NY, United StatesHQ checked Sep 23, 2026	51-200	191 contacts →
	Partial evidence “Research Nester is a global consulting firm that works with the most aspirational facilitators to define the future market strategies.” Source: RevenueBase Database · checked Sep 23, 2026
25	Essex Lake Group	Indirect evidence	New York, United StatesHQ checked Sep 23, 2026	201-500	183 contacts →
	Indirect evidence “Essex delivers transformative business solutions to major global corporations.” Source: RevenueBase Database · checked Sep 23, 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: business advisory and consulting 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 business advisory and consulting firms.
Partial evidence: Its own public description names part of business advisory and consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business advisory and consulting 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 1,895 business advisory and consulting firms based in New York, United States

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Business advisory and consulting firms based in New York, United States at a glance

As of Sep 23, 2026

54.5%Verified-email coverage

32.8Average contacts per company

1-10Median size (employees)

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

1,331

11-50

399

51-200

100

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,895 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 business advisory and consulting 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 “business advisory and consulting 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 business advisory and consulting 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 business advisory and consulting 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, 33,810 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 23, 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.

Business advisory and consulting firms by metro in the United States

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 business advisory and consulting 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 business advisory and consulting firms are there based in New York, United States?

RevenueBase identified 1,895 business advisory and consulting 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?

Alvarez & Marsal, headquartered in New York, tops this list with the largest team on record.

Which city in the United States has the most business advisory and consulting firms?

New York leads the United States with 1,895 headquartered companies, followed by Atlanta (839) and Chicago (826).

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 33,810 verified decision-maker contacts tracked across these 1,895 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 23, 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.