Company lists · Data refreshed September 2026

Top 25 Pro bono services accounting firms based in the United States

RevenueBase identified 537 company matches for pro bono services accounting firms associated with 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 company matches for pro bono services accounting firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. 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 RevenueBase SmartSearch · Exact Recorded Sep 5, 2026 How this list was built
537Companies
5,270Contacts tracked
2,425Verified emails
2,369Mobile numbers
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The 25 largest pro bono services accounting firms based in the United States

Ranked by team size
Top 25 of 537 company matches for pro bono services accounting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchPhiladelphia, PA, United StatesHQ recorded Sep 5, 2026501-1,000775 contacts →

Exact match

“THE NONPROFIT ACCOUNTING SPECIALISTS.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
2Exact matchBuffalo, NY, United StatesHQ recorded Sep 5, 202651-200151 contacts →

Exact match

“Lumsden McCormick CPA is located in the newly renovated Cyclorama Building in downtown Buffalo.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
3Exact matchLas Vegas, NV, United StatesHQ recorded Sep 5, 202651-200142 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
4Exact matchDetroit, MI, United StatesHQ recorded Sep 5, 202611-50115 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
5Exact matchSan Diego, CA, United StatesHQ recorded Sep 5, 202651-200102 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
6Exact matchSan Angelo, TX, United StatesHQ recorded Sep 5, 202651-20091 contacts →

Exact match

“For more than 60 years, Armstrong, Backus & Co.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
7Exact matchWashington, DC, United StatesHQ recorded Sep 5, 20261,001-5,00087 contacts →

Exact match

“Top accounting firm Raffa, P.C.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Sep 5, 202651-20081 contacts →

Exact match

“Accounting, auditing and tax services to public companies, non-public companies and their owners, not-for-profits and employee benefit plans”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
9Exact matchMiddleton, WI, United StatesHQ recorded Sep 5, 202651-20078 contacts →

Exact match

“Quality service through our commitment to staff and clients.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
10Exact matchValley Stream, NY, United StatesHQ recorded Sep 5, 202651-20078 contacts →

Exact match

“Tax Consulting Services Individual Tax Return Preparation * Electronic Filing * Refund Anticipation Loans * Same Day Refund Anticipation Loans * Refund Anticipation Checks * State…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
11Exact matchNew York, NY, United StatesHQ recorded Sep 5, 202651-20075 contacts →

Exact match

“Fasten Halberstam LLP is a full service accounting firm offering a broad range of services for a diversified clientele representing a variety of industries.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
12Exact matchArlington, TX, United StatesHQ recorded Sep 5, 202611-5061 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Sep 5, 202611-5053 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
14Exact matchConcord, NH, United StatesHQ recorded Sep 5, 202611-5052 contacts →

Exact match

“Mission: At Nathan Wechsler & Company, P.A.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
15Exact matchWashington, DC, United StatesHQ recorded Sep 5, 202651-20051 contacts →

Exact match

“Han Group is a public accounting firm committed to serving the nonprofit community by providing unparalleled expertise in nonprofit Audits & Assurance, Managed Accounting, Tax…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
16Exact matchTopeka, KS, United StatesHQ recorded Sep 5, 202651-20051 contacts →

Exact match

“Founded in 1913, BT & Co, P.A.(BT & Co.) has grown to become one of the largest independent public accounting firms in Northeast Kansas.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
17Exact matchPlymouth, MI, United StatesHQ recorded Sep 5, 202651-20050 contacts →

Exact match

“Formed in 1987, Financial One was founded because of the need nonprofit organizations have for accurate and timely financial information.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
18Exact matchNewtown Square, PA, United StatesHQ recorded Sep 5, 202651-20047 contacts →

Exact match

“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 -…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
19Exact matchAllentown, PA, United StatesHQ recorded Sep 5, 202611-5046 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
20Exact matchRedlands, CA, United StatesHQ recorded Sep 5, 202611-5045 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
21Exact matchTampa, FL, United StatesHQ recorded Sep 5, 202611-5041 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
22Exact matchDiamond Bar, CA, United StatesHQ recorded Sep 5, 202651-20041 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
23Exact matchRaleigh, NC, United StatesHQ recorded Sep 5, 202611-5040 contacts →

Exact match

“At Stancil, we understand that every client is unique.”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
24Exact matchAtlanta, GA, United StatesHQ recorded Sep 5, 202611-5038 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase
25Exact matchBoston, MA, United StatesHQ recorded Sep 5, 2026n/a37 contacts →

Exact match

“SOAR strengthens nonprofits through collaborative, pro bono consulting that builds organizational capacity and deepens community impact while fostering an enriching learning…”

Recorded in the RevenueBase company graph · Sep 5, 2026 · View company records in RevenueBase

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 access 2,425 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Pro bono services accounting firms based in the United States at a glance

As of Sep 5, 2026
46.0%Verified-email coverage
45.0%Mobile-number coverage
9.8Average contacts per company
1-10Median size (employees)
2.8%Largest-city concentration · New York
Sep 5, 2026Page data refreshed

Companies by employee count

1-10
351
11-50
163
51-200
17
201-500
1
501-1,000
2
1,001-5,000
1

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United States whose business descriptions match “pro bono services accounting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,425 professional contacts with verified work emails across the full matched dataset. 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.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “pro bono services accounting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many pro bono services accounting firms are there based in the United States?

RevenueBase identified 537 company matches for pro bono services accounting firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Your Part-Time Controller, LLC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most pro bono services accounting firms?

New York leads with 15 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 2,425 professional contacts with verified work emails tracked across these 537 companies; direct dials are available where recorded.

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.