Company lists · Data verified August 2026

Top 19 Accounting firms for international nonprofits based in Warszawa, Poland

There are 57 accounting firms for international nonprofits headquartered in Warszawa, Poland (RevenueBase, August 2026). RevenueBase tracks 761 professional contacts across them, including 278 with verified work emails and 2 with mobile numbers. Warszawa is the largest hub.

This list covers accounting firms for international nonprofits headquartered in Warszawa, Poland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

57Companies
761Contacts tracked
278Verified emails
2Mobile numbers
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The 19 largest accounting firms for international nonprofits based in Warszawa, Poland

Ranked by team size
Top 19 of 57 accounting firms for international nonprofits based in Warszawa, Poland, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#CompanyHQEmployeesContactsVerified emails
1EY PolskaWarszawa5,001-10,000403172
2Baker Tilly TPAWarszawa201-5004431
3Vattax Sp. Z O.OWarszawa51-2002919
4Mazars In PolandWarszawa201-500137
5Arena AccountingWarszawa51-200129
6Grupa Doradcza KdrcWarszawa11-50115
7ETL Global PolskaWarszawa201-50084
8TaxenbachWarszawa11-5082
9Jrd.Warszawa11-5076
10Clevertax Biuro RachunkoweWarszawa1-1065
11Warszawskie Centrum Doradztwa Finansowego I Sp. Z O.OWarszawa11-5064
12Instytut Rachunkowości I Podatków IripWarszawa11-5062
13Sewe GroupWarszawa1-1052
14PGAWarszawa11-5042
15Milton Oaks AccountingWarszawa1-1042
16Fidendo Sp. Z O.OWarszawa11-5032
17Prime NumberWarszawa1-1032
18Global Audit PartnerWarszawa1-1011
19Misters ConsultingWarszawa1-1011

Showing 19 of 57 accounting firms for international nonprofits based in Warszawa, Poland

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Accounting firms for international nonprofits based in Warszawa, Poland at a glance

As of Aug 28, 2026
1-10Median size (employees)
WarszawaLargest hub · 57 HQs
2Contacts with mobile numbers
4Emails re-verified in last 30 days

Companies by employee count

1-10
27
11-50
17
51-200
6
201-500
3
5,001-10,000
1

Accounting firms for international nonprofits by metro in Poland

MetroCompanies
Accounting firms for international nonprofits in Warszawa57
Accounting firms for international nonprofits in Krakow22
Accounting firms for international nonprofits in Poznan18
Accounting firms for international nonprofits in Wroclaw17
Accounting firms for international nonprofits in Lodz12
Accounting firms for international nonprofits in Warsaw11
Accounting firms for international nonprofits in Katowice11

How this list was built

Source
The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion
Companies whose own business descriptions match “accounting firms for international nonprofits”, with match quality audited by blind human judging, and headquartered in Warszawa, Poland.
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
Contact records re-verify on a rolling cadence; 4 contacts on this list were re-verified in the last 30 days.
Refresh
Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many accounting firms for international nonprofits are there based in Warszawa, Poland?

There are 57 accounting firms for international nonprofits headquartered in Warszawa, Poland as of August 2026 (RevenueBase).

What is the largest company on this list?

EY Polska, headquartered in Warszawa, tops this list with the largest team on record.

Which city has the most accounting firms for international nonprofits?

Warszawa leads with 57 headquartered companies, followed by Krakow (22) and Poznan (18).

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 278 verified decision-maker contacts tracked across these 57 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.