Company lists · Data refreshed September 2026

Top 25 501c3 accounting firms based in the United States

Name: 501c3 accounting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 6,560 companies tracked

RevenueBase identified 6,560 501c3 accounting firms headquartered in the United States as of September 2026 and tracks 47,433 professional contacts across them, including 22,559 with verified work emails. New York is the largest hub.

This list covers 501c3 accounting 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 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 27, 2026 86% judged on-target in blind review

6,560Companies

47,433Contacts tracked

22,559Verified emails

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The 25 largest 501c3 accounting firms based in the United States

Ranked by team size

Top 25 of 6,560 501c3 accounting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to 501c3 accounting firms: 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	Hawkins ASH Cpas	Partial evidence	La Crosse, WI, United StatesHQ checked Sep 27, 2026	51-200	193 contacts →
	Partial evidence “Hawkins Ash CPAs, an Inside Public Accounting Top 200 firm, provides certified public accounting services to privately held businesses, governmental organizations, nonprofit…” Source: RevenueBase Database · checked Sep 27, 2026
2	Ketel Thorstenson, LLP	Partial evidence	Rapid City, SD, United StatesHQ checked Sep 27, 2026	51-200	141 contacts →
	Partial evidence “Ketel Thorstenson, LLP, is a full-service accounting firm rich in history, serving clients since 1936.” Source: RevenueBase Database · checked Sep 27, 2026
3	D'arcangelo & Co., LLP	Partial evidence	Utica, NY, United StatesHQ checked Sep 27, 2026	51-200	103 contacts →
	Partial evidence “Bringing our clients over 70 years of dedicated experience and service, D'Arcangelo & Co, LLP offers our clients a distinct difference through unsurpassed accounting, auditing…” Source: RevenueBase Database · checked Sep 27, 2026
4	Matthews, Carter & Boyce, P.C	Partial evidence	Fairfax, VA, United StatesHQ checked Sep 27, 2026	51-200	95 contacts →
	Partial evidence “MCB is a full-service accounting firm celebrating nearly 80 very independent years of business in the Washington, DC metro area.” Source: RevenueBase Database · checked Sep 27, 2026
5	TFC Consulting, INC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 27, 2026	51-200	93 contacts →
	Indirect evidence “TFC Consulting, Inc is a licensed CPA and consulting firm in the Washington DC metro area.” Source: RevenueBase Database · checked Sep 27, 2026
6	Acuity Accounting	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 27, 2026	51-200	89 contacts →
	Partial evidence “Acuity is the modern-day accounting organization built specifically for startups and small businesses.” Source: RevenueBase Database · checked Sep 27, 2026
7	SFW Partners, LLC	Partial evidence	St. Louis, MO, United StatesHQ checked Sep 27, 2026	51-200	76 contacts →
	Partial evidence “The Mission of SFW Partners, LLC is to be a highly respected, ethically guided certified public accounting firm serving as a trusted business advisor to our clients while…” Source: RevenueBase Database · checked Sep 27, 2026
8	SST Accountants & Consultants	Partial evidence	Dallas, TX, United StatesHQ checked Sep 27, 2026	11-50	74 contacts →
	Partial evidence “SST Accountants & Consultants provides tax, audit, accounting, and business advisory services to privately-held businesses and individuals.” Source: RevenueBase Database · checked Sep 27, 2026
9	Mspc Certified Public Accountants And Advisors	Indirect evidence	Cranford, NJ, United StatesHQ checked Sep 27, 2026	51-200	73 contacts →
	Indirect evidence “MSPC Certified Public Accountants and Advisors, P.C.” Source: RevenueBase Database · checked Sep 27, 2026
10	VESTA	Indirect evidence	Fond Du Lac, WI, United StatesHQ checked Sep 27, 2026	11-50	70 contacts →
	Indirect evidence “Vesta is a CPA-led, professional service firm where an inspired team places clients first.” Source: RevenueBase Database · checked Sep 27, 2026
11	Nawrocki Smith LLP	Partial evidence	Hauppauge, NY, United StatesHQ checked Sep 27, 2026	51-200	67 contacts →
	Partial evidence “Nawrocki Smith is a full-service accounting and advisory firm offering expert financial services to individuals, small to mid-size corporations, Fortune 500 companies, local…” Source: RevenueBase Database · checked Sep 27, 2026
12	Brown Armstrong Cpas	Indirect evidence	Bakersfield, CA, United StatesHQ checked Sep 27, 2026	51-200	67 contacts →
	Indirect evidence “As accountants, we know the importance of numbers, but we’re also smart enough to know that there is more to managing your financials than that.” Source: RevenueBase Database · checked Sep 27, 2026
13	Schlenner Wenner & CO	Indirect evidence	St. Cloud, MN, United StatesHQ checked Sep 27, 2026	51-200	66 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 27, 2026
14	JGD & Associates LLP	Indirect evidence	San Diego, CA, United StatesHQ checked Sep 27, 2026	11-50	66 contacts →
	Indirect evidence “JGD & Associates is a full service CPA and advisory firm serving the San Diego area for over 40 years.” Source: RevenueBase Database · checked Sep 27, 2026
15	Redhammer	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 27, 2026	51-200	58 contacts →
	Indirect evidence “RedHammer: Driving Financial Clarity and Strategic Growth in Construction Founded in 2011, RedHammer has evolved from serving Hawaii’s construction companies to becoming a…” Source: RevenueBase Database · checked Sep 27, 2026
16	Brand Sonnenschine LLP	Partial evidence	Brooklyn, United StatesHQ checked Sep 27, 2026	51-200	55 contacts →
	Partial evidence “Brand Sonnenschine LLP provides corporate and personal accounting, tax, and consulting services to businesses across the country.” Source: RevenueBase Database · checked Sep 27, 2026
17	Zelenkofske Axelrod LLC	Indirect evidence	Harrisburg, PA, United StatesHQ checked Sep 27, 2026	51-200	53 contacts →
	Indirect evidence “Zelenkofske Axelrod LLC (ZA) is a regional CPA firm with offices in Harrisburg, Greater Philadelphia (Jamison), Pittsburgh, and Greensburg, Pennsylvania; Frankford, Delaware; and…” Source: RevenueBase Database · checked Sep 27, 2026
18	Heinfeld, Meech & Co., P.C	Indirect evidence	Tucson, AZ, United StatesHQ checked Sep 27, 2026	51-200	53 contacts →
	Indirect evidence “HeinfeldMeech is a premier auditing and consulting firm specializing in the service of governmental and nonprofit organizations.” Source: RevenueBase Database · checked Sep 27, 2026
19	Bt&co., P.A	Partial evidence	Topeka, KS, United StatesHQ checked Sep 27, 2026	51-200	51 contacts →
	Partial evidence “Founded in 1913, BT & Co, P.A.(BT & Co.) has grown to become one of the largest independent public accounting firms in Northeast Kansas.” Source: RevenueBase Database · checked Sep 27, 2026
20	Heffler, Radetich & Saitta LLP	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 27, 2026	11-50	47 contacts →
	Partial evidence “Heffler, Radetich & Saitta LLP, is a full-service certified public accounting and consulting firm, serving a nationwide clientele comprised of high net worth individuals…” Source: RevenueBase Database · checked Sep 27, 2026
21	Jm&m	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 27, 2026	11-50	43 contacts →
	Indirect evidence “JM & M is a full service CPA firm with offices in the Maryland and Washington DC.” Source: RevenueBase Database · checked Sep 27, 2026
22	Pasquesi Sheppard LLC	Partial evidence	Lake Forest, IL, United StatesHQ checked Sep 27, 2026	11-50	41 contacts →
	Partial evidence “Pasquesi Sheppard LLC is a well established public accounting firm, located in downtown Lake Forest.” Source: RevenueBase Database · checked Sep 27, 2026
23	Bookr, INC	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 27, 2026	11-50	40 contacts →
	Partial evidence “Bookr provides the product, processes, and people to seamlessly enable enterprise-grade accounting and finance support exclusively to nonprofits.” Source: RevenueBase Database · checked Sep 27, 2026
24	Cullen & Danowski, LLP	Indirect evidence	Port Jefferson Station, NY, United StatesHQ checked Sep 27, 2026	11-50	39 contacts →
	Indirect evidence “Cullen & Danowski, LLP (Firm) is a firm of certified public accountants licensed in the state of New York, serving the New York and metropolitan area for over thirty years.” Source: RevenueBase Database · checked Sep 27, 2026
25	Arledge	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 27, 2026	11-50	37 contacts →
	Partial evidence “Arledge & Associates is one of Oklahoma’s most respected accounting firms.” Source: RevenueBase Database · checked Sep 27, 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: 501c3 accounting firms. 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 501c3 accounting firms.
Partial evidence: Its own public description names part of 501c3 accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name 501c3 accounting firms. 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 6,560 501c3 accounting firms based in the United States

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501c3 accounting firms based in the United States at a glance

As of Sep 27, 2026

47.6%Verified-email coverage

7.2Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · New York

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

4,568

11-50

1,632

51-200

271

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 6,560 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 501c3 accounting firms, 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 the United States whose own description of what they do matches “501c3 accounting firms”. 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 501c3 accounting firms), 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 501c3 accounting 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 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, 22,559 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 27, 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.

501c3 accounting firms by metro

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 501c3 accounting firms, 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 501c3 accounting firms are there based in the United States?

RevenueBase identified 6,560 501c3 accounting 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?

Hawkins ASH Cpas, headquartered in La Crosse, tops this list with the largest team on record.

Which city has the most 501c3 accounting firms?

New York leads with 156 headquartered companies, followed by Houston (102) and Chicago (73).

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 22,559 verified decision-maker contacts tracked across these 6,560 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 27, 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.