Company lists · Data refreshed October 2026

Top 25 Pro bono services accounting firms worldwide

RevenueBase identified 1,540 company matches for pro bono services accounting firms worldwide as of October 2026 and tracks 13,072 professional contacts across them, including 4,210 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers company matches for pro bono services accounting firms worldwide, 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 October 1, 2026. Country and city lists for pro bono services accounting firms follow the table.

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 Oct 1, 2026 How this list was built
1,540Companies
13,072Contacts tracked
4,210Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest pro bono services accounting firms worldwide

Ranked by team size
Top 25 of 1,540 company matches for pro bono services accounting firms worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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 matchJakarta, IndonesiaHQ recorded Oct 1, 2026501-1,0001,508 contacts →

Exact match

“BDO is the leading provider of professional services within the mid-tier of our profession.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2Exact matchPhiladelphia, PA, United StatesHQ recorded Oct 1, 2026501-1,000775 contacts →

Exact match

“THE NONPROFIT ACCOUNTING SPECIALISTS.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3Exact matchBuffalo, NY, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
4Exact matchLas Vegas, NV, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
5Exact matchDetroit, MI, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
6Exact matchFlushing, NetherlandsHQ recorded Oct 1, 202651-200104 contacts →

Exact match

“Wei, Wei & Co, LLP, is a full service accounting firm that was organized in 1995 by Steve Wei and Liren Wei.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7Exact matchSan Diego, CA, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
8Exact matchMiguel Hidalgo, MexicoHQ recorded Oct 1, 202651-20097 contacts →

Exact match

“Proporcionamos servicios profesionales en las áreas de Auditoría, Contabilidad, Impuestos y Consultoría.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9Exact matchSan Angelo, TX, United StatesHQ recorded Oct 1, 202651-20091 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10Exact matchStratford, ON, CanadaHQ recorded Oct 1, 202651-20087 contacts →

Exact match

“Since 1947, Famme & Co.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11Exact matchWashington, DC, United StatesHQ recorded Oct 1, 20261,001-5,00087 contacts →

Exact match

“Top accounting firm Raffa, P.C.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
13Exact matchMiddleton, WI, United StatesHQ recorded Oct 1, 202651-20078 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14Exact matchValley Stream, NY, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
15Exact matchDublin, IrelandHQ recorded Oct 1, 202611-5078 contacts →

Exact match

“OSK have been providing quality and professional business advice to Irish businesses since 1985.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16Exact matchSaint-apollinaire, FranceHQ recorded Oct 1, 202651-20075 contacts →

Exact match

“Rejoignez une équipe proche de ses clients pour des projets conquérants!”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17Exact matchNew York, NY, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
18Exact matchMilan, ItalyHQ recorded Oct 1, 202651-20065 contacts →

Exact match

“Numerose sono le sfide che il Terzo Settore deve affrontare.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19Exact matchArlington, TX, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
21Exact matchConcord, NH, United StatesHQ recorded Oct 1, 202611-5052 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22Exact matchWashington, DC, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
23Exact matchTopeka, KS, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
24Exact matchPlymouth, MI, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
25Exact matchLondon, United KingdomHQ recorded Oct 1, 202651-20048 contacts →

Exact match

“ACCOUNTAX.”

Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase

Showing 25 of 1,540 pro bono services accounting firms worldwide

See the full list, filter by size, metro and specialty, and access 4,210 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Pro bono services accounting firms worldwide at a glance

As of Oct 1, 2026
32.2%Verified-email coverage
8.5Average contacts per company
1-10Median size (employees)
1.6%Largest-city concentration · Sao Paulo
Oct 1, 2026Page data refreshed

Companies by employee count

1-10
988
11-50
473
51-200
62
201-500
6
501-1,000
3
1,001-5,000
2

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for pro bono services accounting firms are linked below.
What qualifies
Company records worldwide 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. 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 4,210 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 October 1, 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.

Pro bono services accounting firms by location

5 lists · largest first

Every Pro bono services accounting firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

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 worldwide?

RevenueBase identified 1,540 company matches for pro bono services accounting firms worldwide as of October 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?

BDO In Indonesia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most pro bono services accounting firms?

The United States leads with 537 companies, followed by Brazil (132) and Canada (83). Every pro bono services accounting firms list by country and city is linked on this page.

Which city has the most pro bono services accounting firms?

Sao Paulo leads with 25 company records, followed by New York (15) and Toronto (13).

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 4,210 professional contacts with verified work emails tracked across these 1,540 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 October 1, 2026.

Ready to reach these companies? Verified emails and direct dials for all 1,540 pro bono services accounting firms worldwide. Start with a free account, no credit card.

Download this list →

Related 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.