Company lists · Data refreshed September 2026

Top 25 Fundraising consultants worldwide

Name: Fundraising consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 4,475 companies tracked

RevenueBase identified 4,475 fundraising consultants worldwide as of September 2026 and tracks 28,616 professional contacts across them, including 8,913 with verified work emails. The United States is the largest market and London the largest hub.

This list covers fundraising consultants worldwide, 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 20, 2026. Country and city lists for fundraising consultants follow the table.

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 20, 2026 86% judged on-target in blind review

4,475Companies

28,616Contacts tracked

8,913Verified emails

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The 25 largest fundraising consultants worldwide

Ranked by team size

Top 25 of 4,475 fundraising consultants worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to fundraising consultants: 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	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	501-1,000	728 contacts →
	Partial 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 20, 2026
2	RKD Group	Indirect evidence	Plano, TX, United StatesHQ checked Sep 20, 2026	201-500	492 contacts →
	Indirect evidence “RKD Group is the trusted growth architect for nonprofits.” Source: RevenueBase Database · checked Sep 20, 2026
3	Innovairre	Indirect evidence	Cherry Hill, NJ, United StatesHQ checked Sep 20, 2026	1,001-5,000	342 contacts →
	Indirect evidence “Our motto says it all: We Help People Who Help People.” Source: RevenueBase Database · checked Sep 20, 2026
4	Truesense Marketing	Partial evidence	Warrendale, PA, United StatesHQ checked Sep 20, 2026	201-500	280 contacts →
	Partial evidence “TrueSense Marketing is a full-service, strategic, direct response fundraising agency and direct mail marketing company.” Source: RevenueBase Database · checked Sep 20, 2026
5	Arabella Advisors	Indirect evidence	Washington, DC, United StatesHQ checked Sep 20, 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 20, 2026
6	IGC Partners	Indirect evidence	São Paulo, BrazilHQ checked Sep 20, 2026	201-500	213 contacts →
	Indirect evidence “A igc partners é a assessoria de empresas líder em operações de venda total ou parcial e captação de recursos.” Source: RevenueBase Database · checked Sep 20, 2026
7	M R	Indirect evidence	Washington, United StatesHQ checked Sep 20, 2026	51-200	208 contacts →
	Indirect evidence “We are M+R.” Source: RevenueBase Database · checked Sep 20, 2026
8	The Heritage Company	Partial evidence	United StatesHQ checked Sep 20, 2026	501-1,000	197 contacts →
	Partial evidence “Nonprofit Organizations count on The Heritage Company for fundraising and outreach to donors, members and other constituents.” Source: RevenueBase Database · checked Sep 20, 2026
9	O'brien Garrett	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	n/a	152 contacts →
	Partial evidence “O'Brien Garrett is a comprehensive fundraising and communications company serving some of the nation's top nonprofits.” Source: RevenueBase Database · checked Sep 20, 2026
10	AGP Allegiance Group & Pursuant	Indirect evidence	Fargo, ND, United StatesHQ checked Sep 20, 2026	51-200	137 contacts →
	Indirect evidence “AGP partners with mission-driven organizations nationwide to strengthen donor engagement and support long-term, sustainable performance.” Source: RevenueBase Database · checked Sep 20, 2026
11	SG Support	Indirect evidence	Kuala Lumpur Central, MalaysiaHQ checked Sep 20, 2026	201-500	137 contacts →
	Indirect evidence “We exist to support non-profits as they carry out their world-changing missions.” Source: RevenueBase Database · checked Sep 20, 2026
12	BWF	Partial evidence	Usa, United StatesHQ checked Sep 20, 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 20, 2026
13	Telefund, INC	Indirect evidence	United StatesHQ checked Sep 20, 2026	501-1,000	117 contacts →
	Indirect evidence “Since 1988, our mission has been to raise funds and build support for progressive causes and candidates.” Source: RevenueBase Database · checked Sep 20, 2026
14	MAL Warwick Donordigital	Partial evidence	Berkeley, CA, United StatesHQ checked Sep 20, 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 20, 2026
15	The Stelter Company	Indirect evidence	West Des Moines, IA, United StatesHQ checked Sep 20, 2026	51-200	109 contacts →
	Indirect evidence “In business since 1962, The Stelter Company is an integrated marketing agency that provides nonprofits with the insights and strategies needed to optimize revenue across the…” Source: RevenueBase Database · checked Sep 20, 2026
16	Zuri Group	Indirect evidence	Bend, OR, United StatesHQ checked Sep 20, 2026	51-200	106 contacts →
	Indirect evidence “Zuri Group partners with nonprofit organizations to turn big ideas into reality.” Source: RevenueBase Database · checked Sep 20, 2026
17	Campbell & Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 20, 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 20, 2026
18	Onesixty International	Partial evidence	Uk/usa/my, LA, United KingdomHQ checked Sep 20, 2026	51-200	102 contacts →
	Partial evidence “One Sixty International was formed to provide a genuine alternative to traditional face-to-face fundraising.” Source: RevenueBase Database · checked Sep 20, 2026
19	KCI	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	51-200	101 contacts →
	Indirect evidence “At KCI, we are a firm focused on values and people…both ours and yours.” Source: RevenueBase Database · checked Sep 20, 2026
20	Cause À Effet	Indirect evidence	Paris, FranceHQ checked Sep 20, 2026	51-200	101 contacts →
	Indirect evidence “Cause à Effet est l’entreprise leader de la collecte de fonds en face-à-face depuis 15 ans.” Source: RevenueBase Database · checked Sep 20, 2026
21	Corris AG	Partial evidence	Zürich, SwitzerlandHQ checked Sep 20, 2026	51-200	101 contacts →
	Partial evidence “Die 1995 gegründete Corris AG bietet Fundraising-Dienstleistungen für Non-Profit-Organisationen in der Schweiz mit Schwerpunkten in folgenden Bereichen an: Infostand-Fundraising…” Source: RevenueBase Database · checked Sep 20, 2026
22	ORR Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 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 20, 2026
23	BDI	Partial evidence	Monrovia, CA, United StatesHQ checked Sep 20, 2026	51-200	95 contacts →
	Partial evidence “OUR AGENCY: BDI is a full-service, omni-channel, marketing and fundraising agency for nonprofits.” Source: RevenueBase Database · checked Sep 20, 2026
24	UP Fundraising	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	201-500	90 contacts →
	Partial evidence “Up Fundraising is an Experiential Fundraising, Marketing and Brand Building company.” Source: RevenueBase Database · checked Sep 20, 2026
25	HJC	Indirect evidence	Toronto, CanadaHQ checked Sep 20, 2026	11-50	90 contacts →
	Indirect evidence “Our mission is to provide leadership to nonprofit organizations in using new technologies to market, fundraise, advocate and brand build more effectively.” Source: RevenueBase Database · checked Sep 20, 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: fundraising consultants. 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 fundraising consultants.
Partial evidence: Its own public description names part of fundraising consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name fundraising consultants. 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 4,475 fundraising consultants worldwide

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Fundraising consultants worldwide at a glance

As of Sep 20, 2026

31.1%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

3,733

11-50

580

51-200

123

201-500

501-1,000

1,001-5,000

10001+

Email recency is reported on each country list linked below.

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 fundraising consultants, 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.
Coverage: Every country. Country and city lists for fundraising consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “fundraising consultants”. 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 fundraising consultants), 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 fundraising consultants, and records with no verified work email.
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, 8,913 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 20, 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.

Fundraising consultants by location

23 lists · largest first

Every Fundraising consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 fundraising consultants, 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 fundraising consultants are there worldwide?

RevenueBase identified 4,475 fundraising consultants worldwide 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 country has the most fundraising consultants?

The United States leads with 2,235 companies, followed by the United Kingdom (331) and Canada (185). Every fundraising consultants list by country and city is linked on this page.

Which city has the most fundraising consultants?

London leads with 122 headquartered companies, followed by New York (106) and Washington (83).

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 8,913 verified decision-maker contacts tracked across these 4,475 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 20, 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.