Company lists · Data refreshed September 2026
Top 25 Pro bono services accounting firms based in the United States
RevenueBase identified 537 pro bono services accounting firms headquartered in the United States as of September 2026 and tracks 5,270 professional contacts across them, including 2,425 with verified work emails and 2,369 with mobile numbers. New York is the largest hub.
This list covers pro bono services 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, 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.
The 25 largest pro bono services accounting firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 775 | ||||
“THE NONPROFIT ACCOUNTING SPECIALISTS.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 151 | ||||
“Lumsden McCormick CPA is located in the newly renovated Cyclorama Building in downtown Buffalo.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | Legal AID Center Of Southern NevadaIndirect evidence | 142 | |||
“Established in 1958, Legal Aid Center of Southern Nevada is a private, non-profit, 501(c)(3) organization that ensures equal access to justice through free legal advice and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 115 | ||||
“Accounting Aid Society - Growing an Economy That Works for Everyone Accounting Aid Society (AAS) is a nonprofit organization that offers free tax help and counseling; financial…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 102 | ||||
“We offer a multitude of services ranging from traditional compilations, audits, reviews and tax returns, to other specialties, such as personal financial planning, retirement plan…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 91 | ||||
“For more than 60 years, Armstrong, Backus & Co.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 87 | ||||
“Top accounting firm Raffa, P.C.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | 81 | ||||
“Accounting, auditing and tax services to public companies, non-public companies and their owners, not-for-profits and employee benefit plans” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 78 | ||||
“Quality service through our commitment to staff and clients.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | R&g Brenner TAX AccountingIndirect evidence | 78 | |||
“Tax Consulting Services Individual Tax Return Preparation * Electronic Filing * Refund Anticipation Loans * Same Day Refund Anticipation Loans * Refund Anticipation Checks * State…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 75 | ||||
“Fasten Halberstam LLP is a full service accounting firm offering a broad range of services for a diversified clientele representing a variety of industries.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | PSK LLPPartial evidence | 61 | |||
“We provide accounting, tax, audit and business consulting services to clients both nationally and locally from our home in Arlington, Texas, in the Dallas-Fort Worth Metroplex.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 53 | ||||
“One of the largest local public accounting firms in Houston, Mohle Adams has provided professional counsel to Texas companies and residents to help them achieve their business and…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | Nathan Wechsler & CompanyIndirect evidence | 52 | |||
“Mission: At Nathan Wechsler & Company, P.A.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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, 2026Thanks. The Data Team will review it. | |||||
| 16 | 51 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | 50 | ||||
“Formed in 1987, Financial One was founded because of the need nonprofit organizations have for accurate and timely financial information.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 47 | ||||
“Barsz Gowie Amon & Fultz is a full-service accounting firm known for its expertise in business planning services and working with clients throughout the lifecycle of a business -…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 46 | ||||
“The certified public accounting firm of Campbell Rappold & Yurasits LLP located in Allentown, PA was established in 1926 and provides a full range of audit, accounting, tax…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | Smith Marion & COPartial evidence | 45 | |||
“Smith Marion & Company, CPAs, an Inland Empire based accounting firm, specializes in auditing and review services for not-for-profits, governmental agencies and small to mid-sized…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | 41 | ||||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 41 | ||||
“Our service team has a broad based local and national experience in the industries of professional services, technology & software, health care, alternative energy, e-commerce, as…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | Stancil Cpas AdvisorsIndirect evidence | 40 | |||
“At Stancil, we understand that every client is unique.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 38 | ||||
“As one of the leading full service accounting firms in the state of Georgia, our Atlanta and Athens teams combine expertise and experience to assure that every client receives the…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | Soar Management Consulting GroupStrong evidence | 37 | |||
“SOAR strengthens nonprofits through collaborative, pro bono consulting that builds organizational capacity and deepens community impact while fostering an enriching learning…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 537 pro bono services accounting firms based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,425 reachable decision-makers.
Free signup · no credit card
Pro bono services accounting firms based in the United States at a glance
As of Sep 5, 2026Companies by employee count
Verified emails by last verification
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 pro bono services 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 the United States whose own description of what they do matches “pro bono services 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 pro bono services 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 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, 2,425 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.
Frequently asked
How many pro bono services accounting firms are there based in the United States?
RevenueBase identified 537 pro bono services 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?
Your Part-Time Controller, LLC, headquartered in Philadelphia, tops this list with the largest team on record.
Which city has the most pro bono services accounting firms?
New York leads with 15 headquartered companies, followed by Houston (10) and Atlanta (8).
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 2,425 verified decision-maker contacts tracked across these 537 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.
Ready to reach these companies? Verified emails and direct dials for all 537 pro bono services accounting firms based in the United States. Start with a free account, no credit card.
Get the full listRelated lists
Pro bono services accounting firms by geography
Browse the directory
Browse: Companies home · All United States lists · All Pro bono services accounting firms lists · New lists
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Pro bono services accounting firms based in Brazil
- Pro bono services accounting firms based in Canada
- Pro bono services accounting firms based in Italy
- Pro bono services accounting firms based in France
- AI companies based in the United States
- Cybersecurity companies based in the United States