Company lists · Data refreshed September 2026

Top 25 Philanthropy consulting firms based in the United States

Name: Philanthropy 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 21, 2026 3,078 companies tracked

RevenueBase identified 3,078 philanthropy consulting firms headquartered in the United States as of September 2026 and tracks 18,218 professional contacts across them, including 8,287 with verified work emails. New York is the largest hub.

This list covers philanthropy 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 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

3,078Companies

18,218Contacts tracked

8,287Verified emails

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The 25 largest philanthropy consulting firms based in the United States

Ranked by team size

Top 25 of 3,078 philanthropy consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to philanthropy 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	CCS Fundraising	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 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 21, 2026
2	The Bridgespan Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	201-500	443 contacts →
	Indirect evidence “The Bridgespan Group is a global nonprofit that strives to make the world more equitable and just.” Source: RevenueBase Database · checked Sep 21, 2026
3	REN	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 21, 2026	201-500	378 contacts →
	Indirect evidence “Ren is a driving force that powers people, ideas, and institutions for good.” Source: RevenueBase Database · checked Sep 21, 2026
4	Nonprofit Hr, Powered By Onedigital	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	10001+	300 contacts →
	Indirect 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 21, 2026
5	Foundation Source	Partial evidence	Fairfield, CT, United StatesHQ checked Sep 21, 2026	201-500	268 contacts →
	Partial evidence “As the nation’s largest provider of foundation management services, we’re a trusted source for philanthropic expertise.” Source: RevenueBase Database · checked Sep 21, 2026
6	JCA	Partial evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	n/a	265 contacts →
	Partial 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 21, 2026
7	National Philanthropic Trust	Partial evidence	Jenkintown, PA, United StatesHQ checked Sep 21, 2026	201-500	258 contacts →
	Partial evidence “National Philanthropic Trust is a public charity dedicated to providing philanthropic expertise to donors, foundations and financial institutions, enabling them to realize their…” Source: RevenueBase Database · checked Sep 21, 2026
8	TCC Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	n/a	232 contacts →
	Indirect evidence “TCC Group collaborates with leaders to solve complex social problems.” Source: RevenueBase Database · checked Sep 21, 2026
9	Arabella Advisors	Indirect evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	201-500	227 contacts →
	Indirect 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 21, 2026
10	M R	Indirect evidence	Washington, United StatesHQ checked Sep 21, 2026	51-200	208 contacts →
	Indirect evidence “We are M+R.” Source: RevenueBase Database · checked Sep 21, 2026
11	Global Impact	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	170 contacts →
	Partial evidence “Global Impact serves as a trusted philanthropy advisor, intermediary, and nonprofit partner for greater giving.” Source: RevenueBase Database · checked Sep 21, 2026
12	Amphil	Partial evidence	Oak Park, IL, United StatesHQ checked Sep 21, 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 21, 2026
13	BWF	Partial evidence	Usa, United StatesHQ checked Sep 21, 2026	51-200	125 contacts →
	Partial 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 21, 2026
14	MAL Warwick Donordigital	Indirect evidence	Berkeley, CA, United StatesHQ checked Sep 21, 2026	51-200	112 contacts →
	Indirect 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 21, 2026
15	JMT Consulting	Indirect evidence	Mount Juliet, TN, United StatesHQ checked Sep 21, 2026	51-200	112 contacts →
	Indirect 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 21, 2026
16	Firstday Foundation	Partial evidence	San Antonio, TX, United StatesHQ checked Sep 21, 2026	51-200	112 contacts →
	Partial evidence “FirstDay Foundation is a charitable foundation created to provide philanthropic grants, management and governance services to nonprofit organizations doing good work in local…” Source: RevenueBase Database · checked Sep 21, 2026
17	Zuri Group	Indirect evidence	Bend, OR, United StatesHQ checked Sep 21, 2026	51-200	106 contacts →
	Indirect evidence “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: RevenueBase Database · checked Sep 21, 2026
18	Campbell & Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	51-200	102 contacts →
	Partial evidence “Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.” Source: RevenueBase Database · checked Sep 21, 2026
19	ORR Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	51-200	99 contacts →
	Partial evidence “Orr Group was born out of a need for event management and fundraising support in the philanthropic sector.” Source: RevenueBase Database · checked Sep 21, 2026
20	American Endowment Foundation	Indirect evidence	Hudson, OH, United StatesHQ checked Sep 21, 2026	51-200	95 contacts →
	Indirect evidence “Established in 1993, American Endowment Foundation (AEF) is one of the nation’s largest independent donor-advised fund sponsors.” Source: RevenueBase Database · checked Sep 21, 2026
21	Geneva Global	Partial evidence	Radnor, PA, United StatesHQ checked Sep 21, 2026	51-200	92 contacts →
	Partial evidence “Geneva Global is a mission-driven company that helps foundations, organizations, and individuals achieve positive social change through effective philanthropy.” Source: RevenueBase Database · checked Sep 21, 2026
22	Tiaa Kaspick	Partial evidence	Redwood Shores, CA, United StatesHQ checked Sep 21, 2026	51-200	89 contacts →
	Partial evidence “Founded in 1989, TIAA Kaspick offers sophisticated asset management, high quality administration, comprehensive reporting, and consulting services to help charities significantly…” Source: RevenueBase Database · checked Sep 21, 2026
23	Third Plateau	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 21, 2026	51-200	88 contacts →
	Indirect evidence “One of Fast Company's 2025 Best Workplaces for Innovators!* Third Plateau is an impact consultancy on a mission to build lasting social good.” Source: RevenueBase Database · checked Sep 21, 2026
24	Schultz & Williams	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 21, 2026	51-200	83 contacts →
	Partial evidence “Schultz & Williams is a national consulting firm dedicated to helping nonprofits of all types and sizes achieve financial stability, meet organizational goals, and support greater…” Source: RevenueBase Database · checked Sep 21, 2026
25	Marts&lundy	Partial evidence	Lyndhurst, NJ, United StatesHQ checked Sep 21, 2026	51-200	79 contacts →
	Partial evidence “Marts & Lundy serves as a trusted partner to mission-driven organizations whose bold aspirations are realized through the power of philanthropy.” Source: RevenueBase Database · checked Sep 21, 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: philanthropy 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 philanthropy consulting firms.
Partial evidence: Its own public description names part of philanthropy consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name philanthropy 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 3,078 philanthropy consulting firms based in the United States

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Philanthropy consulting firms based in the United States at a glance

As of Sep 21, 2026

45.5%Verified-email coverage

5.9Average contacts per company

1-10Median size (employees)

5.7%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

2,659

11-50

345

51-200

201-500

501-1,000

1,001-5,000

10001+

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 3,078 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 philanthropy 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 “philanthropy 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 philanthropy 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 philanthropy 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, 8,287 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.

Philanthropy 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 philanthropy 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 philanthropy consulting firms are there based in the United States?

RevenueBase identified 3,078 philanthropy 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?

CCS Fundraising, headquartered in New York, tops this list with the largest team on record.

Which city has the most philanthropy consulting firms?

New York leads with 175 headquartered companies, followed by Washington (129) and Chicago (123).

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 8,287 verified decision-maker contacts tracked across these 3,078 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.