Company lists · Data refreshed September 2026

Top 25 Philanthropic advisory firms based in Washington, United States

Name: Philanthropic advisory firms based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 107 companies tracked

RevenueBase identified 107 company matches for philanthropic advisory firms associated with Washington, United States as of September 2026 and tracks 1,696 professional contacts across them, including 897 with verified work emails. Across the United States, New York is the largest hub for this category (272 companies); Washington has 107.

This list covers company matches for philanthropic advisory firms associated with Washington, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 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 RevenueBase SmartSearch · Exact Recorded Sep 20, 2026 How this list was built

107Companies

1,696Contacts tracked

897Verified emails

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The 25 largest philanthropic advisory firms based in Washington, United States

Ranked by team size

Top 25 of 107 company matches for philanthropic advisory firms based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Arabella Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	201-500	227 contacts →
	Exact match “Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	M R	Exact match	Washington, United StatesHQ recorded Sep 20, 2026	51-200	208 contacts →
	Exact match “We are M+R.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Council On Foundations	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	186 contacts →
	Exact match “The Council on Foundations is a nonprofit membership association that serves as a guide for philanthropies as they advance the greater good.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Global Impact	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	170 contacts →
	Exact match “Global Impact serves as a trusted philanthropy advisor, intermediary, and nonprofit partner for greater giving.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	ORR Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	99 contacts →
	Exact match “Orr Group was born out of a need for event management and fundraising support in the philanthropic sector.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	Avalon Consulting Group	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	74 contacts →
	Exact match “Avalon is a full-service fundraising consulting agency helping nonprofits realize the full potential of their direct marketing programs through multi-channel fundraising…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Lautman Maska Neill & Company	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	51-200	64 contacts →
	Exact match “Lautman Maska Neill & Company is an award-winning direct response consulting firm specializing in fully-integrated fundraising exclusively for nonprofits.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
8	Freedman Consulting, LLC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	61 contacts →
	Exact match “Freedman Consulting, LLC, a mission-driven firm, offers strategic consulting services to foundations, nonprofit organizations, and public interest coalitions, advising many of the…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Frontline Solutions	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	46 contacts →
	Exact match “We are a diverse, Black-owned consulting firm that serves the philanthropic and nonprofit sectors.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Philanthropy Roundtable	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	41 contacts →
	Exact match “The Philanthropy Roundtable is a national association of individual donors, corporate giving officers, and foundation trustees and staff.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
11	National Center For Family Philanthropy Ncfp	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	32 contacts →
	Exact match “NCFP is a network of philanthropic families committed to a world that is vibrant, equitable, and resilient.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	Civitas Public Affairs, An Orchestra Company	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	25 contacts →
	Exact match “Known for its bold and strategic campaigns, Civitas Public Affairs Group supports philanthropists, thought leaders, and not-for-profits to advance bipartisan policy solutions on…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Accounts International	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	25 contacts →
	Exact match “Accounts International is a financial advisory firm specializing in Fractional CFO services and financial guidance for growing businesses, entrepreneurs, and executives.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
14	National Committee For Responsive Philanthropy	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	22 contacts →
	Exact match “The National Committee for Responsive Philanthropy in Washington, D.C, is a national watchdog, research and advocacy organization that promotes philanthropy that serves the public…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Quatt Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	19 contacts →
	Exact match “Quatt Associates, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
16	Foundation For Financial Planning	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	17 contacts →
	Exact match “Foundation for Financial Planning (FFP) is the nation’s leading charity dedicated to advancing pro bono financial planning for at-risk populations, including active military…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Exponent Philanthropy	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	16 contacts →
	Exact match “Exponent Philanthropy is the country’s largest association of funders and the only one dedicated to serving foundations with few or no staff, philanthropic families, and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	English Hudson Consulting	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	11-50	15 contacts →
	Exact match “Founded by Lynn English and Marlissa Hudson, English Hudson aligns resources with mission-driven organizations through strategies that come from and are executed by the…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Russell Philanthropies	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	14 contacts →
	Exact match “We're on a mission to build a more equitable world.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Abundance Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	11 contacts →
	Exact match “For more than ten years, Abundance Strategies (formerly KG Consulting) has been empowering nonprofits to embrace a culture of abundance and helping them to raise millions of…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	Klamp & Associates, P.C	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	11 contacts →
	Exact match “Klamp & Associates is a law firm dedicated exclusively to representing charitable organizations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Thread Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	11 contacts →
	Exact match “Thread Strategies is a woman-led fundraising consulting firm that specializes in supporting small nonprofits.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
23	Collaborateup	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	11 contacts →
	Exact match “The world is facing its most profound geopolitical realignment in a generation, bringing complex challenges-and unprecedented opportunities-to uplift communities and generate…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Raffa Investment Advisers	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	10 contacts →
	Exact match “Founded more than 20 years ago, Raffa Investment Advisers was purpose-built to serve nonprofit organizations and membership associations nationwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
25	Fundraise INC	Exact match	Washington, DC, United StatesHQ recorded Sep 20, 2026	1-10	8 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “philanthropic advisory firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 107 philanthropic advisory firms based in Washington, United States

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Philanthropic advisory firms based in Washington, United States at a glance

As of Sep 20, 2026

52.9%Verified-email coverage

15.9Average contacts per company

1-10Median size (employees)

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 107 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Washington, United States whose business descriptions match “philanthropic advisory firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 897 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Philanthropic advisory firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “philanthropic advisory firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many philanthropic advisory firms are there based in Washington, United States?

RevenueBase identified 107 company matches for philanthropic advisory firms associated with Washington, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Arabella Advisors tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most philanthropic advisory firms?

New York leads the United States with 272 company records, followed by Chicago (135) and Washington (107).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 897 professional contacts with verified work emails tracked across these 107 companies; direct dials are available where recorded.

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 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.