Company lists · Data refreshed September 2026

Top 25 Nonprofit consulting firms based in the United States

Name: Nonprofit consulting 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 5, 2026 6,245 companies tracked

RevenueBase identified 6,245 nonprofit consulting firms headquartered in the United States as of September 2026 and tracks 39,361 professional contacts across them, including 13,048 with verified work emails and 17,338 with mobile numbers. New York is the largest hub.

This list covers nonprofit consulting 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 5, 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 5, 2026 86% judged on-target in blind review

6,245Companies

39,361Contacts tracked

13,048Verified emails

17,338Mobile numbers

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The 25 largest nonprofit consulting firms based in the United States

Ranked by team size

Top 25 of 6,245 nonprofit consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to nonprofit 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	Bank Of The West	Partial evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	n/a	4,751 contacts →
	Partial evidence “We help businesses and nonprofits grow, communicate, and succeed, professionally and affordably.” Source: RevenueBase Database · checked Sep 5, 2026
2	Your Part-Time Controller, LLC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 5, 2026	501-1,000	775 contacts →
	Partial evidence “THE NONPROFIT ACCOUNTING SPECIALISTS.” Source: RevenueBase Database · checked Sep 5, 2026
3	Lucas Group	Strong evidence	Los Angeles, CA, United StatesHQ checked Sep 5, 2026	10001+	756 contacts →
	Strong evidence “Ultimate Minds is a professional consulting and marketing firm dedicated to empowering businesses, nonprofits, and startups with smart, affordable, and results-driven solutions.” Source: RevenueBase Database · checked Sep 5, 2026
4	CCS Fundraising	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	501-1,000	728 contacts →
	Indirect evidence “For over 75 years, CCS Fundraising has empowered many of the world’s greatest organizations to advance some of the most important causes in history.” Source: RevenueBase Database · checked Sep 5, 2026
5	Nonprofit Hr, Powered By Onedigital	Partial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	10001+	300 contacts →
	Partial evidence “Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.” Source: RevenueBase Database · checked Sep 5, 2026
6	JCA	Strong evidence	Chicago, IL, United StatesHQ checked Sep 5, 2026	n/a	265 contacts →
	Strong evidence “JCA is the first and foremost independent consulting firm dedicated to addressing the technology and operational needs of nonprofits.” Source: RevenueBase Database · checked Sep 5, 2026
7	Capincrouse	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 5, 2026	51-200	262 contacts →
	Partial evidence “As a national full-service accounting and advisory firm exclusively serving nonprofit organizations, CapinCrouse provides professional solutions to organizations whose outcomes…” Source: RevenueBase Database · checked Sep 5, 2026
8	SSA Consultants	Indirect evidence	Baton Rouge, LA, United StatesHQ checked Sep 5, 2026	n/a	258 contacts →
	Indirect evidence “We are partners and advisors of leading organizations and governments, bound to and inspired by a mission of helping our clients improve their performance.” Source: RevenueBase Database · checked Sep 5, 2026
9	TCC Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	n/a	232 contacts →
	Indirect evidence “TCC Group collaborates with leaders to solve complex social problems.” Source: RevenueBase Database · checked Sep 5, 2026
10	Arabella Advisors	Partial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	201-500	227 contacts →
	Partial evidence “Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Source: RevenueBase Database · checked Sep 5, 2026
11	Nonprofit Finance Fund	Strong evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	212 contacts →
	Strong evidence “Financing for nonprofits https://nff.org/our-work/financing/#Consulting for nonprofits https://nff.org/our-work/consulting/#Partnerships with funders and networks…” Source: RevenueBase Database · checked Sep 5, 2026
12	M R	Indirect evidence	Washington, United StatesHQ checked Sep 5, 2026	51-200	208 contacts →
	Indirect evidence “We are M+R.” Source: RevenueBase Database · checked Sep 5, 2026
13	Ncheng LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 5, 2026	51-200	197 contacts →
	Indirect evidence “As certified public accountants and expert financial advisors, we empower non-profits to achieve their mission.” Source: RevenueBase Database · checked Sep 5, 2026
14	Mcallister & Quinn	Partial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	170 contacts →
	Partial evidence “McAllister & Quinn is a Washington, DC consulting firm that provides a comprehensive range of services to a diverse group of clients with issues before the federal government.” Source: RevenueBase Database · checked Sep 5, 2026
15	ALL In ONE Accounting	Partial evidence	Eagan, MN, United StatesHQ checked Sep 5, 2026	51-200	150 contacts →
	Partial evidence “All In One Accounting is your strategic accounting team dedicated to serving growth-minded entrepreneurs and mission-driven nonprofits by supporting profitable growth, protection…” Source: RevenueBase Database · checked Sep 5, 2026
16	Harvard Undergraduate Consulting Group	Strong evidence	Cambridge, MA, United StatesHQ checked Sep 5, 2026	51-200	144 contacts →
	Strong evidence “Harvard Undergraduate Consulting Group is a nonprofit student organization at Harvard dedicated to helping businesses grow and achieve their strategic goals.” Source: RevenueBase Database · checked Sep 5, 2026
17	Herren Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	142 contacts →
	Indirect evidence “Here at Herren, our goals are to drive efficiency and maximize the value of every dollar our clients spend.” Source: RevenueBase Database · checked Sep 5, 2026
18	Amphil	Partial evidence	Oak Park, IL, United StatesHQ checked Sep 5, 2026	51-200	136 contacts →
	Partial evidence “AmPhil exists to promote the art of civil association by helping philanthropists, charitable foundations, and nonprofit organizations grow and flourish through practical guidance…” Source: RevenueBase Database · checked Sep 5, 2026
19	The Acceleration Project	Partial evidence	Scarsdale, NY, United StatesHQ checked Sep 5, 2026	11-50	131 contacts →
	Partial evidence “The Acceleration Project (TAP) is a nonprofit organization with a mission to unlock pathways to wealth creation and economic mobility by accelerating under-resourced small…” Source: RevenueBase Database · checked Sep 5, 2026
20	BWF	Strong evidence	Usa, United StatesHQ checked Sep 5, 2026	51-200	125 contacts →
	Strong evidence “BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.” Source: RevenueBase Database · checked Sep 5, 2026
21	Emergent Method	Partial evidence	Baton Rouge, LA, United StatesHQ checked Sep 5, 2026	51-200	125 contacts →
	Partial evidence “Emergent Method is a nationally recognized management consulting firm focused on developing and implementing plans, programs, and initiatives that result in transformative impact.” Source: RevenueBase Database · checked Sep 5, 2026
22	Mcking Consulting	Strong evidence	Fairfax, VA, United StatesHQ checked Sep 5, 2026	51-200	118 contacts →
	Strong evidence “McKing Consulting Corporation provides a variety of general and specialized management consulting services to the federal government, state agencies, nonprofits, and public and…” Source: RevenueBase Database · checked Sep 5, 2026
23	MAL Warwick Donordigital	Partial evidence	Berkeley, CA, United StatesHQ checked Sep 5, 2026	51-200	112 contacts →
	Partial evidence “Our team of expert consultants develops innovative direct marketing-driven donor development programs for exceptional nonprofit causes like yours.” Source: RevenueBase Database · checked Sep 5, 2026
24	JMT Consulting	Partial evidence	Mount Juliet, TN, United StatesHQ checked Sep 5, 2026	51-200	112 contacts →
	Partial evidence “Our number one priority at JMT is to empower nonprofits to achieve their mission through optimized systems and processes.” Source: RevenueBase Database · checked Sep 5, 2026
25	Premier Consulting & Integration	Indirect evidence	Red Bank, NJ, United StatesHQ checked Sep 5, 2026	51-200	109 contacts →
	Indirect evidence “We Make Your Business Operations Comfortable.” Source: RevenueBase Database · checked Sep 5, 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: nonprofit 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 nonprofit consulting firms.
Partial evidence: Its own public description names part of nonprofit consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name nonprofit 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 6,245 nonprofit consulting firms based in the United States

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Nonprofit consulting firms based in the United States at a glance

As of Sep 5, 2026

33.1%Verified-email coverage

44.0%Mobile-number coverage

6.3Average contacts per company

1-10Median size (employees)

4.2%Largest-city concentration · New York

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

5,411

11-50

696

51-200

119

201-500

501-1,000

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

12,1420–30

79731–60

961–90

590–180

95180+

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 nonprofit 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 the United States whose own description of what they do matches “nonprofit 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 nonprofit 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 nonprofit consulting 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, 13,048 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 5, 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.

Nonprofit consulting 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 nonprofit 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 nonprofit consulting firms are there based in the United States?

RevenueBase identified 6,245 nonprofit consulting 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?

Bank Of The West, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most nonprofit consulting firms?

New York leads with 262 headquartered companies, followed by Washington (250) and Chicago (193).

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 13,048 verified decision-maker contacts tracked across these 6,245 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 5, 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.