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Company lists · Data refreshed September 2026

Top 25 Philanthropic consulting firms based in the United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 3,997 companies tracked

RevenueBase identified 3,997 philanthropic consulting firms headquartered in the United States as of September 2026 and tracks 27,356 professional contacts across them, including 12,156 with verified work emails and 13,710 with mobile numbers. New York is the largest hub.

This list covers philanthropic 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, how directly it supports the match, 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 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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
3,997Companies
27,356Contacts tracked
12,156Verified emails
13,710Mobile numbers
Unlock all 3,997 companies Free signup · no credit card · 500 free credits

The 25 largest philanthropic consulting firms based in the United States

Ranked by team size
Top 25 of 3,997 philanthropic consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names philanthropic consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
CCS FundraisingIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 2026501-1,000728

“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: company website · checked Sep 5, 2026
2
FSGPartial evidence
Boston, MA, United StatesHQ checked Sep 5, 202651-200517

“At FSG, we are a global nonprofit consulting firm committed to advancing equitable systems change.”

Source: company website · checked Sep 5, 2026
3
The Bridgespan GroupIndirect evidence
Boston, MA, United StatesHQ checked Sep 5, 2026201-500443

“The Bridgespan Group is a global nonprofit that strives to make the world more equitable and just.”

Source: company website · checked Sep 5, 2026
4
RENIndirect evidence
Indianapolis, IN, United StatesHQ checked Sep 5, 2026201-500378

“Ren is a driving force that powers people, ideas, and institutions for good.”

Source: company website · checked Sep 5, 2026
5
GellerIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 202651-200310

“Geller provides financial services and strategic advisory to private companies and not-for-profit organizations.”

Source: company website · checked Sep 5, 2026
6
Nonprofit Hr, Powered By OnedigitalIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 202610001+300

“Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.”

Source: company website · checked Sep 5, 2026
7
National Christian FoundationIndirect evidence
Alpharetta, GA, United StatesHQ checked Sep 5, 2026201-500296

“At the National Christian Foundation (NCF), we understand the challenges that come with being entrusted with much.”

Source: company website · checked Sep 5, 2026
8
Foundation SourcePartial evidence
Fairfield, CT, United StatesHQ checked Sep 5, 2026201-500268

“As the nation’s largest provider of foundation management services, we’re a trusted source for philanthropic expertise.”

Source: company website · checked Sep 5, 2026
9
JCAPartial evidence
Chicago, IL, United StatesHQ checked Sep 5, 2026n/a265

“JCA is the first and foremost independent consulting firm dedicated to addressing the technology and operational needs of nonprofits.”

Source: company website · checked Sep 5, 2026
10
National Philanthropic TrustPartial evidence
Jenkintown, PA, United StatesHQ checked Sep 5, 2026201-500258

“National Philanthropic Trust is a public charity dedicated to providing philanthropic expertise to donors, foundations and financial institutions, enabling them to realize their…”

Source: company website · checked Sep 5, 2026
11
Isaacson, MillerIndirect evidence
Boston, MA, United StatesHQ checked Sep 5, 2026201-500250

“Isaacson, Miller is one of the nation's premier executive search firms serving organizations that advance the public good.”

Source: company website · checked Sep 5, 2026
12
TCC GroupIndirect evidence
New York, NY, United StatesHQ checked Sep 5, 2026n/a232

“TCC Group collaborates with leaders to solve complex social problems.”

Source: company website · checked Sep 5, 2026
13
Arabella AdvisorsIndirect evidence
Washington, DC, United StatesHQ checked Sep 5, 2026201-500227

“Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.”

Source: company website · checked Sep 5, 2026
14
Nonprofit Finance FundPartial evidence
New York, NY, United StatesHQ checked Sep 5, 202651-200212

“Financing for nonprofits https://nff.org/our-work/financing/#Consulting for nonprofits https://nff.org/our-work/consulting/#Partnerships with funders and networks…”

Source: company website · checked Sep 5, 2026
15
M RIndirect evidence
Washington, United StatesHQ checked Sep 5, 202651-200208

“We are M+R.”

Source: company website · checked Sep 5, 2026
16
Council On FoundationsPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-200186

“The Council on Foundations is a nonprofit membership association that serves as a guide for philanthropies as they advance the greater good.”

Source: company website · checked Sep 5, 2026
17
Global ImpactPartial evidence
Washington, DC, United StatesHQ checked Sep 5, 202651-200170

“Global Impact serves as a trusted philanthropy advisor, intermediary, and nonprofit partner for greater giving.”

Source: company website · checked Sep 5, 2026
18
AGP Allegiance Group & PursuantIndirect evidence
Fargo, ND, United StatesHQ checked Sep 5, 202651-200137

“AGP partners with mission-driven organizations nationwide to strengthen donor engagement and support long-term, sustainable performance.”

Source: company website · checked Sep 5, 2026
19
AmphilPartial evidence
Oak Park, IL, United StatesHQ checked Sep 5, 202651-200136

“AmPhil exists to promote the art of civil association by helping philanthropists, charitable foundations, and nonprofit organizations grow and flourish through practical guidance…”

Source: company website · checked Sep 5, 2026
20
Rockefeller Philanthropy AdvisorsPartial evidence
New York, CA, United StatesHQ checked Sep 5, 202651-200136

“Rockefeller Philanthropy Advisors (RPA) accelerates philanthropy in pursuit of a just world.”

Source: company website · checked Sep 5, 2026
21
Vanguard CharitableIndirect evidence
Southeastern, PA, United StatesHQ checked Sep 5, 202651-200132

“Vanguard Charitable is a leading U.S.”

Source: company website · checked Sep 5, 2026
22
The Acceleration ProjectIndirect evidence
Scarsdale, NY, United StatesHQ checked Sep 5, 202611-50131

“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: company website · checked Sep 5, 2026
23
BWFPartial evidence
Usa, United StatesHQ checked Sep 5, 202651-200125

“BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.”

Source: company website · checked Sep 5, 2026
24
MAL Warwick DonordigitalIndirect evidence
Berkeley, CA, United StatesHQ checked Sep 5, 202651-200112

“Our team of expert consultants develops innovative direct marketing-driven donor development programs for exceptional nonprofit causes like yours.”

Source: company website · checked Sep 5, 2026
25
JMT ConsultingIndirect evidence
Mount Juliet, TN, United StatesHQ checked Sep 5, 202651-200112

“Our number one priority at JMT is to empower nonprofits to achieve their mission through optimized systems and processes.”

Source: company website · checked Sep 5, 2026

Showing 25 of 3,997 philanthropic consulting firms based in the United States

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Philanthropic consulting firms based in the United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 226 HQs
13,710Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
3,392
11-50
488
51-200
99
201-500
12
501-1,000
2
1,001-5,000
1
10001+
2

Verified emails by last verification

0–30
11,356
31–60
728
61–90
7
90–180
6
180+
59

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 philanthropic consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “philanthropic consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among philanthropic 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 an evidence 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, 12,156 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.

Philanthropic consulting firms by metro

Frequently asked

How many philanthropic consulting firms are there based in the United States?

RevenueBase identified 3,997 philanthropic 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 philanthropic consulting firms?

New York leads with 226 headquartered companies, followed by Washington (175) and Chicago (149).

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 12,156 verified decision-maker contacts tracked across these 3,997 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 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.

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