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HWW Hewelt Wojnowski Lindner i Wspólnicy
Innovation Leader 2026
Ranking of Tax Advisory Firms, Rzeczpospolita

Legal and tax advice for business

HWW Hewelt Wojnowski Lindner i Wspólnicy sp.k. is a Warsaw law and tax firm. We support companies at every stage of their development: from the first business decisions, through successive stages of growth, all the way to a stock market debut.

Or write to kancelaria@hww.pl Open in mail

ul. Łucka 18 lok. 4/L, 00-845 Warszawa
+48 22 100 42 24 kancelaria@hww.pl
2018
Year of foundation

Law and tax firm based in Warsaw

Interdisciplinary team

Lawyers, legal advisers and tax advisers in one team

PL· EN· DE
Three languages

Polish and foreign customer service

Full range of business law

From day-to-day handling to complex transactions

We provide comprehensive legal and tax services for business

The specialisation of the team allows us to handle projects requiring knowledge in many areas of law, as well as management and economics.

Corporate and commercial law

Day-to-day operation of companies, governance, corporate documentation, representation in corporate disputes.

Tax advice

KIS interpretations, R&D and IP Box reliefs, transfer pricing, MDR, audit and tax proceedings.

Energy law and RES

Regulatory advice (URE, SOKiK), RES auctions, PPAs, wind and PV projects, M&A in the energy sector.

Mergers and acquisitions (M&A)

Due diligence, transaction structure, SPA and SHA documentation, negotiations and closing on the buyer's and seller's side.

Judicial and arbitration proceedings

Representation before ordinary courts, the SOKiK, the KIO, arbitration courts and in mediations. Corporate, commercial and regulatory disputes.

Restructuring and bankruptcy

Restructuring, sanitation and bankruptcy proceedings. Bankruptcy petitions, claims filings, advice to debtors and creditors.

Administrative proceedings

Decisions of administrative authorities, appeals, complaints to the WSA and NSA, regulatory proceedings, cases of inaction of an authority.

RODO and new technologies

RODO compliance audits, privacy policies, terms of service, IT and SaaS contracts, intellectual property protection.

Public procurement

Procurement proceedings (PPL), appeals to the NAC, complaints to the SOKiK, support to contracting authorities and contractors.

We work for entrepreneurs in many sectors

We combine legal advice with an understanding of the specific industry in which our client operates.

Meet the firm's partners

The whole team →
Partner
Lawyer, tax and restructuring advisor. Tax, restructuring and insolvency advice; audit and tax proceedings.
Partner
Barrister. Corporate and civil law, litigation. Experience in providing legal services to entities in the TMT and energy sectors.
Partner
Lawyer, court mediator. Energy law (conventional and RES), corporate services, M&A transactions, cases before the ERO and the SOKiK.

Awards and market recommendations

The standing of the firm and its lawyers is regularly confirmed in independent legal and tax rankings.

Plaque: Ranking of Law Firms, Rzeczpospolita
Ranking of Law Firms Rzeczpospolita · top of Division II Recommended: Aleksandra Lindner (energy), Mikołaj Hewelt (restructuring)
Crystal Rising Stars trophy, Wolters Kluwer
Rising Stars · Lawyers Leaders of Tomorrow Wolters Kluwer · Mikołaj Hewelt · 2020
Plaque: Ranking of Tax Advisory Firms, Rzeczpospolita 2024
Ranking of Tax Advisory Firms Rzeczpospolita · 2024 Innovation Leader 2026 (proprietary AI-based knowledge base)
Plaque: Forbes Poland's Best Law Firms 2023
Poland's Best Law Firms Forbes · 2023
Brass plaque: Ranking of Tax Firms and Advisors, Dziennik Gazeta Prawna
Ranking of Tax Firms and Advisors Dziennik Gazeta Prawna · 2025-2026
Trophy Leader 2026, Index of Future Lawyers, Energy and Green Transition, Dziennik Gazeta Prawna, Aleksandra Lindner
Index of Future Lawyers · Leader 2026 Dziennik Gazeta Prawna · Energy · A. Lindner

Trusted by our clients

What clients say after working with our team.

I highly recommend the firm, and especially Legal Counsel Mateusz, whose high level of expertise, reliability, and professional approach to clients are unparalleled. The firm is based on solid foundations of law and case law, rather than superficial solutions, guaranteeing effective and reliable legal support. You can trust HWW in every legal matter.
A N. Google 5 na 5 gwiazdek, opinia Google
I highly recommend working with HWW Law Firm. I've been using their services for several years. They helped me, among other things, launch my business, and they still provide ongoing consultations on corporate matters. Everything is conducted in a friendly atmosphere, and legal complexities are explained in a straightforward manner. I particularly appreciate the comprehensive service and the fact that my interests are taken care of in one place, both legally and tax-wise. Furthermore, the firm often offers solutions to me and my partners on its own initiative, making our lives easier. I also appreciate the responsiveness of the HWW lawyers, as I've had mixed experiences with other firms in this area.
Mary K. Google 5 na 5 gwiazdek, opinia Google
I wholeheartedly recommend this law firm. From the very first contact, I was treated with great respect and empathy. The firm's team is not only extremely professional and reliable, but also friendly and responsive to the client's needs. I felt I was in good hands – every issue was thoroughly explained, and my matters were handled with complete dedication. This is a place where high-quality legal services are combined with a human touch. Thank you for your help and support!
Artur M. Google 5 na 5 gwiazdek, opinia Google
We highly recommend HWW to all companies seeking professional legal advice in the energy sector. We successfully renegotiated contracts with electricity suppliers. I highly recommend it.
Barbara W. Google 5 na 5 gwiazdek, opinia Google
Professionalism, reliability, and a personalized approach to each client are the hallmarks of this law firm. I highly recommend them to anyone seeking effective legal assistance!
Joanna D. Google 5 na 5 gwiazdek, opinia Google
4,7★ · 36 Google reviews See all reviews on Google

Latest articles by our lawyers

All publications →
Companies and corporations 16 April 2026

The April issue of the newsletter is now available

In the April issue, you can read about, amongst other things: the latest legislative changes in the energy sector, which may affect investment development and the …

KH
Kancelaria HWW
1 min read

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