Company lists · Data refreshed September 2026

Top 25 Nonprofit tax compliance firms based in the United States

Name: Nonprofit tax compliance 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 20, 2026 2,568 companies tracked

RevenueBase identified 2,568 nonprofit tax compliance firms headquartered in the United States as of September 2026 and tracks 30,284 professional contacts across them, including 15,658 with verified work emails. New York is the largest hub.

This list covers nonprofit tax compliance 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 20, 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 20, 2026 86% judged on-target in blind review

2,568Companies

30,284Contacts tracked

15,658Verified emails

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The 25 largest nonprofit tax compliance firms based in the United States

Ranked by team size

Top 25 of 2,568 nonprofit tax compliance firms based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to nonprofit tax compliance 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	Your Part-Time Controller, LLC	Partial evidence	Philadelphia, PA, United StatesHQ checked Sep 20, 2026	501-1,000	775 contacts →
	Partial evidence “THE NONPROFIT ACCOUNTING SPECIALISTS.” Source: RevenueBase Database · checked Sep 20, 2026
2	Novogradac & Company LLP	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	501-1,000	619 contacts →
	Indirect evidence “Novogradac is among the nation’s top 40 certified public accounting and consulting firms with more than 25 offices nationwide.” Source: RevenueBase Database · checked Sep 20, 2026
3	Brown Edwards	Partial evidence	Roanoke, VA, United StatesHQ checked Sep 20, 2026	201-500	496 contacts →
	Partial evidence “Providing Professional Business Advisory and Consulting Services including tax, accounting and IT services.” Source: RevenueBase Database · checked Sep 20, 2026
4	Sensiba LLP	Partial evidence	San Jose, CA, United StatesHQ checked Sep 20, 2026	501-1,000	493 contacts →
	Partial evidence “Sensiba’s comprehensive accounting, tax, and consulting services help businesses and people solve problems, navigate complexity, and build a foundation for sustainable growth.” Source: RevenueBase Database · checked Sep 20, 2026
5	Prager Metis Cpas	Indirect evidence	New York, United StatesHQ checked Sep 20, 2026	201-500	467 contacts →
	Indirect evidence “Prager Metis CPAs is an independent, full service, public accounting and consulting firm.” Source: RevenueBase Database · checked Sep 20, 2026
6	GHJ	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 20, 2026	201-500	449 contacts →
	Indirect evidence “At GHJ, we go beyond numbers.” Source: RevenueBase Database · checked Sep 20, 2026
7	Smith Howard	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	501-1,000	413 contacts →
	Partial evidence “Smith + Howard is a tax, accounting, advisory, and consulting firm headquartered in Atlanta, with a global presence.” Source: RevenueBase Database · checked Sep 20, 2026
8	Aafcpas	Indirect evidence	Westborough, MA, United StatesHQ checked Sep 20, 2026	201-500	410 contacts →
	Indirect evidence “AAFCPAs is a premier independently owned CPA and advisory firm with a global presence.” Source: RevenueBase Database · checked Sep 20, 2026
9	Apercen Partners LLC	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 20, 2026	201-500	399 contacts →
	Partial evidence “Originating from the English and Latin roots of “apercu,” an act of insight, and “census,” an applied study of wealth and property, Apercen is a tax consulting firm offering high…” Source: RevenueBase Database · checked Sep 20, 2026
10	Berkowitz Pollack Brant Advisors Cpas	Indirect evidence	Miami, FL, United StatesHQ checked Sep 20, 2026	201-500	361 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
11	Squire	Partial evidence	Orem, UT, United StatesHQ checked Sep 20, 2026	201-500	297 contacts →
	Partial evidence “Squire is a nationally recognized audit, tax, and business advisory firm serving clients across the U.S.” Source: RevenueBase Database · checked Sep 20, 2026
12	Redpath And Company Accounting, Tax, Audit, Advisory	Indirect evidence	Saint Paul, MN, United StatesHQ checked Sep 20, 2026	201-500	292 contacts →
	Indirect evidence “Redpath and Company helps clients make more informed decisions that contribute to their financial well-being by providing proactive, innovative, and value-driven CPA and advisory…” Source: RevenueBase Database · checked Sep 20, 2026
13	Capincrouse	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 20, 2026	51-200	262 contacts →
	Partial evidence “As a national full-service accounting and advisory firm exclusively serving nonprofit organizations, CapinCrouse provides professional solutions to organizations whose outcomes…” Source: RevenueBase Database · checked Sep 20, 2026
14	Calibre CPA Group, Pllc	Indirect evidence	Bethesda, MD, United StatesHQ checked Sep 20, 2026	201-500	254 contacts →
	Indirect evidence “Calibre CPA Group is a national accounting and advisory firm serving associations, not-for-profit organizations, labor unions, employee benefit plans, and business enterprises.” Source: RevenueBase Database · checked Sep 20, 2026
15	GRF Cpas & Advisors	Partial evidence	Bethesda, MD, United StatesHQ checked Sep 20, 2026	51-200	243 contacts →
	Partial evidence “Headquartered in the Washington, DC metropolitan region, GRF CPAs & Advisors (GRF) is a full-service professional services firm providing clients with audit and assurance, tax…” Source: RevenueBase Database · checked Sep 20, 2026
16	Ncheng LLP	Indirect evidence	New York, NY, United StatesHQ checked Sep 20, 2026	51-200	197 contacts →
	Indirect evidence “As certified public accountants and expert financial advisors, we empower non-profits to achieve their mission.” Source: RevenueBase Database · checked Sep 20, 2026
17	Perkins & CO	Partial evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	201-500	197 contacts →
	Partial evidence “Perkins & Co CPAs help growth-focused organizations and individuals navigate complex tax, audit, and advisory needs with clarity and confidence.” Source: RevenueBase Database · checked Sep 20, 2026
18	Centri	Indirect evidence	Philadelphia, PA, United StatesHQ checked Sep 20, 2026	201-500	189 contacts →
	Indirect evidence “Centri Business Consulting provides the highest quality advisory consulting services to its clients by being reliable and responsive to their needs.” Source: RevenueBase Database · checked Sep 20, 2026
19	Hutchinson And Bloodgood LLP	Partial evidence	Glendale, CA, United StatesHQ checked Sep 20, 2026	51-200	187 contacts →
	Partial evidence “Hutchinson and Bloodgood LLP is a leading firm of Certified Public Accountants and Consultants providing Tax Planning, Auditing, Technology Consulting, Human Resources and…” Source: RevenueBase Database · checked Sep 20, 2026
20	Pease Bell	Indirect evidence	Cleveland, OH, United StatesHQ checked Sep 20, 2026	51-200	183 contacts →
	Indirect evidence “Pease Bell is a rapidly growing mid-sized accounting firm serving an expanding nationwide client base.” Source: RevenueBase Database · checked Sep 20, 2026
21	Stambaugh Ness	Indirect evidence	York, PA, United StatesHQ checked Sep 20, 2026	201-500	179 contacts →
	Indirect evidence “Stambaugh Ness is a professional services firm serving clients nationally with a singular focus on architecture, engineering, and related industries.” Source: RevenueBase Database · checked Sep 20, 2026
22	Lsl, LLP	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 20, 2026	51-200	178 contacts →
	Indirect evidence “LSL provides solid guidance, support & solutions to businesses, governments and non-profits.” Source: RevenueBase Database · checked Sep 20, 2026
23	Jackson Thornton	Indirect evidence	Montgomery, AL, United StatesHQ checked Sep 20, 2026	51-200	177 contacts →
	Indirect evidence “Jackson Thornton, an accounting and consulting firm of more than 200 accountants and business consultants, applies more than a century of experience to serve over clients across a…” Source: RevenueBase Database · checked Sep 20, 2026
24	Legacy Professionals LLP	Indirect evidence	Westchester, IL, United StatesHQ checked Sep 20, 2026	51-200	174 contacts →
	Indirect evidence “Legacy Professionals LLP, headquartered in Westchester, IL, with offices in Schererville, IN, and Edina, MN, is a Certified Public Accounting firm serving clients nationwide.” Source: RevenueBase Database · checked Sep 20, 2026
25	Wilkinguttenplan	Indirect evidence	East Brunswick, NJ, United StatesHQ checked Sep 20, 2026	51-200	172 contacts →
	Indirect evidence 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: nonprofit tax compliance 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 nonprofit tax compliance firms.
Partial evidence: Its own public description names part of nonprofit tax compliance firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name nonprofit tax compliance 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 2,568 nonprofit tax compliance firms based in the United States

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Nonprofit tax compliance firms based in the United States at a glance

As of Sep 20, 2026

51.7%Verified-email coverage

11.8Average contacts per company

1-10Median size (employees)

3.0%Largest-city concentration · New York

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

1,757

11-50

615

51-200

156

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 2,568 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 tax compliance 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 “nonprofit tax compliance 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 nonprofit tax compliance 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 nonprofit tax compliance 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, 15,658 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.

Nonprofit tax compliance 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 nonprofit tax compliance 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 nonprofit tax compliance firms are there based in the United States?

RevenueBase identified 2,568 nonprofit tax compliance 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?

Your Part-Time Controller, LLC, headquartered in Philadelphia, tops this list with the largest team on record.

Which city has the most nonprofit tax compliance firms?

New York leads with 78 headquartered companies, followed by Chicago (56) and Atlanta (50).

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 15,658 verified decision-maker contacts tracked across these 2,568 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.