Company lists · Data refreshed September 2026

Top 25 International nonprofit consultants based in New York, United States

Name: International nonprofit consultants 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 28, 2026 192 companies tracked

RevenueBase identified 192 international nonprofit consultants headquartered in New York, United States as of September 2026 and tracks 2,729 professional contacts across them, including 1,062 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers international nonprofit consultants 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 28, 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 28, 2026 86% judged on-target in blind review

192Companies

2,729Contacts tracked

1,062Verified emails

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The 25 largest international nonprofit consultants based in New York, United States

Ranked by team size

Top 25 of 192 international nonprofit consultants based in New York, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to international nonprofit 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	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 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 28, 2026
2	TCC Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	n/a	232 contacts →
	Indirect evidence “TCC Group collaborates with leaders to solve complex social problems.” Source: RevenueBase Database · checked Sep 28, 2026
3	Nonprofit Finance Fund	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	212 contacts →
	Partial 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 28, 2026
4	Kiwi Partners	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	72 contacts →
	Partial evidence “Kiwi Partners delivers exceptional Accounting, Consulting Services, and HR services to the nonprofit community.” Source: RevenueBase Database · checked Sep 28, 2026
5	Independent Diplomat	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	68 contacts →
	Partial evidence “Independent Diplomat is a unique non-profit venture in the world of international relations, diplomacy and conflict prevention.” Source: RevenueBase Database · checked Sep 28, 2026
6	Graham-Pelton	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	59 contacts →
	Partial evidence “Graham-Pelton is the fundraising consulting firm chosen by leading nonprofits worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
7	BDO FMA	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	54 contacts →
	Indirect evidence “BDO FMA exists to build a community of individuals with the confidence and skills to lead organizations that change the world.” Source: RevenueBase Database · checked Sep 28, 2026
8	Changing OUR World	Partial evidence	New York, United StatesHQ checked Sep 28, 2026	51-200	44 contacts →
	Partial evidence “Changing Our World is a trusted social impact consulting firm that advises leading corporations and nonprofit organizations.” Source: RevenueBase Database · checked Sep 28, 2026
9	Support Center For Nonprofit Management	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	n/a	40 contacts →
	Strong evidence “Support Center is a nonprofit capacity building organization created as part of an international network of management support organizations (Support Centers of America)…” Source: RevenueBase Database · checked Sep 28, 2026
10	National Executive Service Corps	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	n/a	33 contacts →
	Partial evidence “National Executive Services Corps (NESC) is a nonprofit professional services firm offering high-quality and affordable management consulting, executive search, and financial…” Source: RevenueBase Database · checked Sep 28, 2026
11	Advance NYC	Indirect evidence	New York, United StatesHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence “Advance NYC is a leading consulting firm dedicated to meeting the flexible, on-demand needs of non-profits.” Source: RevenueBase Database · checked Sep 28, 2026
12	Community Resource Exchange CRE	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Healthy, thriving nonprofits are needed to drive positive social change in our world.” Source: RevenueBase Database · checked Sep 28, 2026
13	Wingo NYC	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Indirect evidence “Founded in 1996, Wingo is a fundraising and design consulting firm for social, cultural and environmental change.” Source: RevenueBase Database · checked Sep 28, 2026
14	Humanitarian Outcomes	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	17 contacts →
	Partial evidence “Humanitarian Outcomes is a team of specialist consultants providing research and policy advice for humanitarian aid agencies and donor governments.” Source: RevenueBase Database · checked Sep 28, 2026
15	Amplify Partners Consultants And Advisers	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Amplify Partners works with its nonprofit and family foundation clients to fundraise, plan, manage, and govern for innovation and success.” Source: RevenueBase Database · checked Sep 28, 2026
16	Capital Campaign PRO	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “At Capital Campaign Pro, we believe you don’t just need another consultant.” Source: RevenueBase Database · checked Sep 28, 2026
17	Plus Accounting Services	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “Established in 2022 by industry veteran Carlos Norena, Plus Accounting Services is a beacon of commitment to the nonprofit sector.” Source: RevenueBase Database · checked Sep 28, 2026
18	Funded Strategies	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	14 contacts →
	Indirect evidence “Whether you are just starting out or want to grow and sustain your development operation, we are here to help.” Source: RevenueBase Database · checked Sep 28, 2026
19	KM Strategies Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “KMSG is a social impact consulting firm that works with leaders navigating complexity as they work to make their communities better, stronger, and more vibrant places to live.” Source: RevenueBase Database · checked Sep 28, 2026
20	Perry Davis Associates	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	12 contacts →
	Partial evidence “Since 1986 Perry Davis Associates, Inc (PDA) has been providing outstanding services to non-profits both within the US and internationally.” Source: RevenueBase Database · checked Sep 28, 2026
21	Threshold Group	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Indirect evidence “Threshold Group is a full-service consulting firm specializing in advertising, fundraising, and public affairs.” Source: RevenueBase Database · checked Sep 28, 2026
22	Phoenixfire Strategic Consulting	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	1-10	11 contacts →
	Indirect evidence “Our mission is simple.” Source: RevenueBase Database · checked Sep 28, 2026
23	Fivestone	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	11 contacts →
	Partial evidence “Since 2001, we’ve created strategy, branding, and campaigns for more than 300 courageous nonprofits, foundations, Fortune 500s, and startups.” Source: RevenueBase Database · checked Sep 28, 2026
24	Rockefeller Philanthropy Advisors	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	10 contacts →
	Indirect evidence “At Rockefeller Philanthropy Advisors, our mission is to accelerate philanthropy in pursuit of a just world.” Source: RevenueBase Database · checked Sep 28, 2026
25	Hudson Ferris	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “With over 50 years of collective professional fundraising experience, we enable social impact leaders to secure the resources they need to implement their vision and achieve…” Source: RevenueBase Database · checked Sep 28, 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: international nonprofit 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 international nonprofit consultants.
Partial evidence: Its own public description names part of international nonprofit consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name international nonprofit 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 192 international nonprofit consultants based in New York, United States

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International nonprofit consultants based in New York, United States at a glance

As of Sep 28, 2026

38.9%Verified-email coverage

14.2Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

155

11-50

51-200

201-500

501-1,000

1,001-5,000

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 192 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 international nonprofit 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.
What qualifies: Companies headquartered in New York, United States whose own description of what they do matches “international nonprofit 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 international nonprofit 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 international nonprofit consultants, 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, 1,062 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 28, 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.

International nonprofit consultants 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 international nonprofit 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 international nonprofit consultants are there based in New York, United States?

RevenueBase identified 192 international nonprofit consultants 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?

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

Which city in the United States has the most international nonprofit consultants?

New York leads the United States with 192 headquartered companies, followed by Washington (181) and Chicago (133).

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 1,062 verified decision-maker contacts tracked across these 192 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 28, 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.