Company lists · Data refreshed September 2026

Top 25 Tax law firms based in Warsaw, Poland

RevenueBase identified 62 tax law firms headquartered in Warsaw, Poland as of September 2026 and tracks 859 professional contacts across them, including 472 with verified work emails. Warszawa is the largest hub.

This list covers tax law firms headquartered in Warsaw, Poland, 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 6, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 6, 2026 86% judged on-target in blind review
62Companies
859Contacts tracked
472Verified emails
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The 25 largest tax law firms based in Warsaw, Poland

Ranked by team size
Top 25 of 62 tax law firms based in Warsaw, Poland, ranked by team size, largest first. Data refreshed Sep 6, 2026. RevenueBase Smart Search rates how each company's information relates to tax law firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceWarsaw, PolandHQ checked Sep 6, 202651-200146 contacts →

“ALTO is one of the fastest growing advisory firms in Poland.”

Source: company website · checked Sep 6, 2026
2Indirect evidenceWarsaw, PolandHQ checked Sep 6, 2026201-500120 contacts →

“Poland remains one of Europe’s fastest-growing economies, attracting record levels of investment and driving landmark M&A and corporate finance activity.”

Source: company website · checked Sep 6, 2026
3Strong evidenceWarsaw, PolandHQ checked Sep 6, 202651-20081 contacts →

“BWHS Law Firm was founded by experienced legal and tax advisors who gained their professional experience while working in "Big Four" consulting firms and leading Polish and…”

Source: company website · checked Sep 6, 2026
4Partial evidenceWarsaw, PolandHQ checked Sep 6, 202651-20050 contacts →

“We are a team of people focused on delivering to our clients consulting services in the area of Finance and Tax.”

Source: company website · checked Sep 6, 2026
5Partial evidenceWarsaw, PolandHQ checked Sep 6, 202611-5040 contacts →

“Offering comprehensive tax and legal advisory services, we have been assisting our Clients since 2003.”

Source: company website · checked Sep 6, 2026
6Partial evidenceWarsaw, PolandHQ checked Sep 6, 202611-5024 contacts →

“The Pietrzak Sidor & Partners Law Firm was founded in 2007 by advocate Mikołaj Pietrzak and legal advisor Artur Sidor.”

Source: company website · checked Sep 6, 2026
7Partial evidenceWarsaw, PolandHQ checked Sep 6, 202611-5022 contacts →

“Octo Legal was established to provide quality legal services, while offering all the advantages of a boutique law firm.”

Source: company website · checked Sep 6, 2026
8Partial evidenceWarsaw, PolandHQ checked Sep 6, 202611-5022 contacts →

“NGL Legal We are a fast-growing law firm with an ambition to become a centre of legal services in CEE/BBA (Baltics, Balkans, Adriatics) and globally, through a network of trusted…”

Source: company website · checked Sep 6, 2026
9Partial evidenceWarsaw, PolandHQ checked Sep 6, 202611-5019 contacts →

“Innside Tax to miejsce, w którym opiekujemy się wszystkimi sprawami podatkowymi naszych Klientów.”

Source: company website · checked Sep 6, 2026
10Partial evidenceWarsaw, PolandHQ checked Sep 6, 202611-5017 contacts →

“DESTRIER is a dynamic law firm based In Warsaw.”

Source: company website · checked Sep 6, 2026
11Partial evidenceWarsaw, PolandHQ checked Sep 6, 202651-20017 contacts →

“We are a specialist business and investment law firm led by experienced lawyers with leading international law firm backgrounds.”

Source: company website · checked Sep 6, 2026
12Strong evidenceWarsaw, PolandHQ checked Sep 6, 202611-5017 contacts →

“We are the law firm providing comprehensive tax advisory services for Polish and foreign corporate clients.”

Source: company website · checked Sep 6, 2026
13Indirect evidenceWarsaw, PolandHQ checked Sep 6, 202651-20015 contacts →

“SSW is a leading firm with a singular focus – business of our clients.”

Source: company website · checked Sep 6, 2026
14Partial evidenceWarsaw, PolandHQ checked Sep 6, 202611-5014 contacts →

Law firm fully focused on helping clients succeed in business, providing highest-quality, results-oriented legal advice.”

Source: company website · checked Sep 6, 2026
15Indirect evidenceWarsaw, PolandHQ checked Sep 6, 202611-5013 contacts →

“LEGALLY.SMART Latymowicz, Liżewski, Tkaczyk Kancelaria Adwokatów i Radców Prawnych sp.”

Source: company website · checked Sep 6, 2026
16Partial evidenceWarsaw, PolandHQ checked Sep 6, 202611-5011 contacts →

“Accreo is a leading consulting company offering tax and legal advisory services to companies and individuals.”

Source: company website · checked Sep 6, 2026
17Indirect evidenceWarsaw, PolandHQ checked Sep 6, 202611-5011 contacts →

“Szanowni Państwo, Kancelaria Kolibski, Nikończyk, Dec & Partnerzy to doświadczony zespół specjalistów podatkowych, wielokrotnie wyróżniany i nagradzany, który skutecznie pomaga…”

Source: company website · checked Sep 6, 2026
18Indirect evidenceWarsaw, PolandHQ checked Sep 6, 202611-5010 contacts →

“Audyt finansowy, doradztwo księgowe, podatkowe i transakcyjne – praktyczne rozwiązania dla firmy BF Audyt to nowoczesna firma audytorska i doradcza, założona przez specjalistów…”

Source: company website · checked Sep 6, 2026
19Indirect evidenceWarsaw, PolandHQ checked Sep 6, 20261-109 contacts →

“Legal problems will not resolve themselves.”

Source: company website · checked Sep 6, 2026
20Indirect evidenceWarsaw, PolandHQ checked Sep 6, 20261-109 contacts →

“Lawarton – business lawyers Lawarton jest kancelarią prawną specjalizująca się w obsłudze biznesu.”

Source: company website · checked Sep 6, 2026
21Partial evidenceWarsaw, PolandHQ checked Sep 6, 20261-108 contacts →

“SEEWALD Attorneys is a Warsaw based independent law firm which provides top quality tailor-made and customized legal advice on the most commercial and other matters that our…”

Source: company website · checked Sep 6, 2026
22Indirect evidenceWarsaw, PolandHQ checked Sep 6, 202611-507 contacts →

“BRILLAW Kancelaria Radców Prawnych Mikulski & Partners is a team of experienced lawyers, perfectly prepared to provide comprehensive legal services for any kind of business…”

Source: company website · checked Sep 6, 2026
23Indirect evidenceWarsaw, PolandHQ checked Sep 6, 202611-507 contacts →

“Kancelaria prawna Lewcio & Marciniak zajmuje się kompleksową obsługą prawną klientów biznesowych i indywidualnych.”

Source: company website · checked Sep 6, 2026
24Strong evidenceWarsaw, PolandHQ checked Sep 6, 202611-506 contacts →

“Morawski & Partners law firm is providing a full scale of legal and tax services for large international corporations, as well as medium and small businesses.”

Source: company website · checked Sep 6, 2026
25Indirect evidenceWarsaw, PolandHQ checked Sep 6, 20261-105 contacts →

“Charakteryzują nas nowatorskie rozwiązania i elastyczność w dostosowywaniu się do indywidualnych potrzeb różnych klientów.”

Source: company website · checked Sep 6, 2026

Showing 25 of 62 tax law firms based in Warsaw, Poland

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Tax law firms based in Warsaw, Poland at a glance

As of Sep 6, 2026
54.9%Verified-email coverage
13.9Average contacts per company
1-10Median size (employees)
321.0%Largest-city concentration · Warszawa
Sep 6, 2026Page data refreshed

Companies by employee count

1-10
33
11-50
19
51-200
9
201-500
1

Email recency for this list is measured across the whole Poland list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Warsaw, over 62 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 tax law 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 Warsaw, Poland whose own description of what they do matches “tax law 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 tax law 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 tax law firms, and records with no verified work email. Companies headquartered outside Warsaw 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, 472 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 6, 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

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 tax law 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 tax law firms are there based in Warsaw, Poland?

RevenueBase identified 62 tax law firms headquartered in Warsaw, Poland 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?

ALTO, headquartered in Warsaw, tops this list with the largest team on record.

Which city has the most tax law firms?

Warszawa leads with 199 headquartered companies, followed by Wroclaw (83) and Poznan (77).

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 472 verified decision-maker contacts tracked across these 62 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 6, 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 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.