Company lists · Data refreshed September 2026

Top 23 Nonprofit accounting firms based in Washington, United States

Name: Nonprofit accounting 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 5, 2026 43 companies tracked

RevenueBase identified 43 nonprofit accounting firms headquartered in Washington, United States as of September 2026 and tracks 616 professional contacts across them, including 348 with verified work emails. New York is the largest hub.

This list covers nonprofit accounting firms headquartered in Washington, 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

43Companies

616Contacts tracked

348Verified emails

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The 23 largest nonprofit accounting firms based in Washington, United States

Ranked by team size

Top 23 of 43 nonprofit accounting firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names nonprofit accounting 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.
#	Company	Headquarters	Employees	Contacts
1	Arabella AdvisorsPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	201-500	227
	“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
2	Raffa, PCPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1,001-5,000	87
	“Top accounting firm Raffa, P.C.” Source: company website · checked Sep 5, 2026
3	Lautman Maska Neill & CompanyPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	64
	“Lautman Maska Neill & Company is an award-winning direct response consulting firm specializing in fully-integrated fundraising exclusively for nonprofits.” Source: company website · checked Sep 5, 2026
4	HAN Group LLCStrong evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	51-200	51
	“Han Group is a public accounting firm committed to serving the nonprofit community by providing unparalleled expertise in nonprofit Audits & Assurance, Managed Accounting, Tax…” Source: company website · checked Sep 5, 2026
5	Spark Point FundraisingPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	11-50	14
	“Spark Point is the resource that nonprofits are hungry for – a thought partner to guide them to an easily implemented, sustainable fundraising strategy and an experienced grant…” Source: company website · checked Sep 5, 2026
6	CFO Services GroupPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	12
	“CFO Services Group is your dedicated accounting team and much more.” Source: company website · checked Sep 5, 2026
7	Klamp & Associates, P.CIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	11
	“Klamp & Associates is a law firm dedicated exclusively to representing charitable organizations.” Source: company website · checked Sep 5, 2026
8	JSMGIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	9
	“JSMG empowers organizations to make informed decisions with clear and reliable financial insights.” Source: company website · checked Sep 5, 2026
9	Seiler, Singleton & Associates, PAStrong evidence	Washington, NC, United StatesHQ checked Sep 5, 2026	1-10	9
	“At Seiler, Singleton & Associates, P.A, our goal is to offer quality accounting, tax, payroll, and advisory services to individuals, small businesses, and nonprofit organizations.” Source: company website · checked Sep 5, 2026
10	Fundraise INCIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	8
	Source: company website · checked Sep 5, 2026
11	Myrick CPAPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	7
	“Myrick CPA is a Washington, DC-based accounting firm - now offering virtual service to clients throughout the U.S- specializing in ensuring tax advantages and resolution for small…” Source: company website · checked Sep 5, 2026
12	The Consonance GroupPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	4
	“The Consonance Group (TCG) provides bookkeeping, human resources, and financial management services to a wide range of nonprofit and small for-profit businesses.” Source: company website · checked Sep 5, 2026
13	MAX Accounting SolutionsPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	2
	“You don't have to be an Accounting Pro.” Source: company website · checked Sep 5, 2026
14	D'nitiativesPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“d'nitiatives® helps nonprofit organizations set strategic direction, design initiatives, grow resources, and support change.” Source: company website · checked Sep 5, 2026
15	Acordis ConsultingIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“Acordis Consulting was founded in 2011 to provide unparalleled technical expertise to our customers.” Source: company website · checked Sep 5, 2026
16	Lane & Company, Certified Public AccountantsPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“For over two decades, Lane & Company, CPAs has served as a public accounting firm and trusted adviser to its non-profit clients, providing audit, outsourced accounting and tax…” Source: company website · checked Sep 5, 2026
17	Rogue Tulips Nonprofit Consulting & Association Management ServicesPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“The mission of Rogue Tulips Nonprofit Consulting & Association Management Services is to find inspired solutions to the unique challenges facing our clients in the 21st Century.” Source: company website · checked Sep 5, 2026
18	Highline Consulting LLCPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“Highline Consulting provides managerial accounting, bookkeeping, analysis, Budgeting, cash forecasting and modeling for small businesses.” Source: company website · checked Sep 5, 2026
19	RM Martin CPAPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“Virtual Public Accounting firm based in Washington, DC.” Source: company website · checked Sep 5, 2026
20	MBA ServicesPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“About MBA Services, LLC Founded in 2007, MBA Services is a women‑founded, owned, and operated accounting firm built on the belief that financial clarity drives organizational…” Source: company website · checked Sep 5, 2026
21	Financially TonePartial evidence	Washington, United StatesHQ checked Sep 5, 2026	1-10	1
	“Financially Tone provides bookkeeping, grant management, 990 prep, and financial reporting exclusively for nonprofit organizations.” Source: company website · checked Sep 5, 2026
22	Tennally CorporationPartial evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“We provide CFO, accounting and bookkeeping services to small businesses and non-profits.” Source: company website · checked Sep 5, 2026
23	Lesher TAX ServicesIndirect evidence	Washington, DC, United StatesHQ checked Sep 5, 2026	1-10	1
	“Lesher Tax Services all-in-one CPA firm offering expert bookkeeping, tax preparation, strategy consulting, and compliance services to business owners, individuals, and non-profits.” Source: company website · checked Sep 5, 2026

Showing 23 of 43 nonprofit accounting firms based in Washington, United States

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Nonprofit accounting firms based in Washington, United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 120 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

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 this city, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 43 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 nonprofit accounting 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 Washington, United States whose own description of what they do matches “nonprofit accounting 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 nonprofit accounting firms, and records with no verified work email. Companies headquartered outside Washington 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, 348 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.

Nonprofit accounting firms by metro in the United States

Nonprofit accounting firms in New York120
Nonprofit accounting firms in Atlanta57
Nonprofit accounting firms in Chicago54
Nonprofit accounting firms in Houston54
Nonprofit accounting firms in Los Angeles53
Nonprofit accounting firms in Washington43
Nonprofit accounting firms in Miami34
Nonprofit accounting firms in Philadelphia34
Nonprofit accounting firms in Dallas31
Nonprofit accounting firms in Phoenix31
Nonprofit accounting firms in Portland29
Nonprofit accounting firms in San Francisco29
Nonprofit accounting firms in Austin28
Nonprofit accounting firms in Denver27
Nonprofit accounting firms in Seattle26

Frequently asked

How many nonprofit accounting firms are there based in Washington, United States?

RevenueBase identified 43 nonprofit accounting firms headquartered in Washington, 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?

Arabella Advisors, headquartered in Washington, tops this list with the largest team on record.

Which city has the most nonprofit accounting firms?

New York leads with 120 headquartered companies, followed by Atlanta (57) and Chicago (54).

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 348 verified decision-maker contacts tracked across these 43 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.