Company lists · Data refreshed September 2026
Top 25 Nonprofit accounting outsourcing firms based in the United States
RevenueBase identified 2,970 nonprofit accounting outsourcing firms headquartered in the United States as of September 2026 and tracks 18,521 professional contacts across them, including 7,786 with verified work emails. New York is the largest hub.
This list covers nonprofit accounting outsourcing 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 29, 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.
The 25 largest nonprofit accounting outsourcing firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 775 contacts → | ||||
Strong evidence “THE NONPROFIT ACCOUNTING SPECIALISTS.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 415 contacts → | ||||
Indirect evidence “Outsourced Bookkeeping and Controller Services Supporting Strategies provides outsourced bookkeeping services, controller services and operational support to growing businesses.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 320 contacts → | ||||
Strong evidence “Unison Globus is a global accounting outsourcing and offshore staffing partner dedicated to supporting CPA firms and accounting professionals.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 282 contacts → | ||||
Indirect evidence “Listen, then advise.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 262 contacts → | ||||
Strong 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 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 243 contacts → | ||||
Indirect 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 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 243 contacts → | ||||
Partial evidence “Our name means “The Spirit of Serving Others.” It’s who we are and why we believe there’s no higher value than partnering with nonprofits to make the world a better place.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 231 contacts → | ||||
Indirect evidence “Thomas, Judy and Tucker, P.A.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 168 contacts → | ||||
Strong evidence “Infinity Globus, a Springline company, is a leading accounting outsourcing firm with over two decades of industry experience, providing tailored taxation and accounting services…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 155 contacts → | ||||
Strong evidence “Accounting Outsourcing to Drive Growth for Global CPA Firms & MNCs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 151 contacts → | ||||
Indirect evidence “Lumsden McCormick CPA is located in the newly renovated Cyclorama Building in downtown Buffalo.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 150 contacts → | ||||
Strong evidence “All In One Accounting is your strategic accounting team dedicated to serving growth-minded entrepreneurs and mission-driven nonprofits by supporting profitable growth, protection…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 125 contacts → | ||||
Partial evidence “BWF Zuri is the nonprofit sector’s most comprehensive fundraising consulting company, helping organizations thrive in a rapidly changing landscape.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 112 contacts → | ||||
Partial evidence “Our number one priority at JMT is to empower nonprofits to achieve their mission through optimized systems and processes.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 109 contacts → | ||||
Indirect evidence “Charter Impact is a comprehensive back-office solution empowering charter schools and other non-profits with strategic financial management, operational expertise, and data-driven…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 104 contacts → | ||||
Partial evidence “For over 45 years, Rubino & Company, Chartered has provided outstanding public accounting, tax advisory, regulatory consulting, and financial services to clients in the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 102 contacts → | ||||
Partial evidence “Campbell & Company is a national nonprofit consulting firm that helps organizations create greater impact through fundraising, communications and strategic information services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 100 contacts → | ||||
Partial evidence “Snyder Cohn is a mid-sized CPA and business advisory firm, founded in 1927 and specializing in serving business owners and executives of businesses and nonprofit organizations in…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 97 contacts → | ||||
Partial evidence “Anand Tated a seasoned chartered accountant and the CEO of Pacific Accounting & Business Services (PABS) started PABS with his vision to customize modern solutions and deliver…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 92 contacts → | ||||
Partial evidence “We are one of the leading offshore companies that offer the best in the industry staffing solutions to CPAs, accounting firms, and other companies.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 88 contacts → | ||||
Indirect evidence “Consero Global Acquires BTQ Financial, Expanding Its Reach to the Non-Profit World With a Leading Provider of Finance as a Service to the Sector.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 87 contacts → | ||||
Partial evidence “Top accounting firm Raffa, P.C.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 83 contacts → | ||||
Partial evidence “Schultz & Williams is a national consulting firm dedicated to helping nonprofits of all types and sizes achieve financial stability, meet organizational goals, and support greater…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
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 accounting outsourcing 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 accounting outsourcing firms.
- Partial evidence
- Its own public description names part of nonprofit accounting outsourcing firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name nonprofit accounting outsourcing 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 2,970 nonprofit accounting outsourcing firms based in the United States
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Nonprofit accounting outsourcing firms based in the United States at a glance
As of Sep 29, 2026Companies by employee count
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 2,970 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 outsourcing 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 accounting outsourcing 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 accounting outsourcing 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 accounting outsourcing 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, 7,786 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 29, 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 outsourcing firms by metro
- Nonprofit accounting outsourcing firms in New York81
- Nonprofit accounting outsourcing firms in Los Angeles53
- Nonprofit accounting outsourcing firms in Houston43
- Nonprofit accounting outsourcing firms in Atlanta40
- Nonprofit accounting outsourcing firms in Chicago37
- Nonprofit accounting outsourcing firms in Austin35
- Nonprofit accounting outsourcing firms in San Diego35
- Nonprofit accounting outsourcing firms in Dallas32
- Nonprofit accounting outsourcing firms in Phoenix28
- Nonprofit accounting outsourcing firms in Portland26
- Nonprofit accounting outsourcing firms in San Francisco26
- Nonprofit accounting outsourcing firms in Washington26
- Nonprofit accounting outsourcing firms in Denver25
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 accounting outsourcing 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 accounting outsourcing firms are there based in the United States?
RevenueBase identified 2,970 nonprofit accounting outsourcing 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 accounting outsourcing firms?
New York leads with 81 headquartered companies, followed by Los Angeles (53) and Houston (43).
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 7,786 verified decision-maker contacts tracked across these 2,970 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 29, 2026.
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Nonprofit accounting outsourcing firms by geography
- Nonprofit accounting outsourcing firms based in Sydney, Australia
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- Nonprofit accounting outsourcing firms based in Calgary, Canada
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- Nonprofit accounting outsourcing firms based in Ahmedabad, India
- Nonprofit accounting outsourcing firms based in London, United Kingdom
- Nonprofit accounting outsourcing firms based in Atlanta, United States
- Nonprofit accounting outsourcing firms based in Austin, United States
- Nonprofit accounting outsourcing firms based in Chicago, United States
- Nonprofit accounting outsourcing firms based in Dallas, United States
- Nonprofit accounting outsourcing firms based in Denver, United States
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.
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