Grzegorz Keler, PhD
- Advocate
- ·
- Partner
Grzegorz Keler is an advocate and holds a PhD degree in law. He has over a decade of professional experience gained at international consulting firms and leading Polish law and tax firms.
His expertise includes tax law. He has represented clients in numerous tax audits, proceedings, customs and tax audits, and administrative court cases. He has also been involved in legislative processes carried out by the Ministry of Finance. Additionally, he has provided advice on public aid law.
Grzegorz Keler has extensive experience in criminal proceedings. He serves as a defense attorney and injured party representative in commercial criminal cases, as well as a defense attorney in fiscal criminal cases, including before the Supreme Court. He is a co-author of a commentary on the Fiscal Penal Code.
His experience also includes commercial companies law and antitrust law. He advises on mergers and acquisitions (M&A) and real estate transactions, as well as capital and asset reorganizations. He also supports regulated entities. He has represented clients in proceedings before the Polish Financial Supervision Authority (KNF), the General Inspector of Financial Information, the Energy Regulatory Office, and other regulatory authorities.
He advises organizations across sectors such as financial, capital markets, automotive, real estate, IT, construction, transport, and heavy industry.
Dr. Keler is an assistant professor at the Department of Legal Problems of Administration and Management at the Faculty of Management, University of Warsaw. He lectures on the EMBA program at the University of Warsaw and on postgraduate studies in FinTech at the Warsaw School of Economics. He is an expert at the Center for Regulatory Impact Assessment at the University of Warsaw and the Center for Digital Economy and Finance at Nicolaus Copernicus University in Toruń.
Author of numerous academic publications on tax law, corporate law, and criminal fiscal law. Co-author of commentaries on the Corporate Income Tax Act, the Fiscal Penal Code, regulations on corporate transformations, holding law, the Family Foundation Act, and regulations on the Simple Joint-Stock Company. Speaker and panelist at international and national academic conferences.
He earned a Master of Science in Finance and Auditing from the Clermont School of Business and the University of Economics in Katowice. He is also a graduate of the School of English and European Law at the British Law Centre, affiliated with the University of Warsaw and the University of Cambridge.
He is a laureate of the Rising Stars Lawyers – Leaders of Tomorrow 2021 competition.
- Master of Laws, University of Silesia (2011)
- Master of Science: Finance and Auditing, Clermont School of Business and University of Economics in Katowice (2012)
- School of English and European Law, British Law Centre, University of Warsaw and University of Cambridge (2012)
- Advocate, member of the Bar Association in Katowice (2016) and Warsaw (2020) – entry number: WAW/Adw/8882
- Doctor of Laws, University of Opole (2020)
- Assistant Professor at the Department of Legal Problems of Administration and Management, Faculty of Management, University of Warsaw, since 2022
- Partner, Jabłoński, Koźmiński and Partners sp. k., since 2025
- Director, Thedy & Partner (2024-2025)
- Senior Associate, SPCG (2023-2024)
- Associate, SPCG (2018-2024)
- Manager, Paczuski Taudul (2017-2018)
- Senior consultant, Paczuski Taudul (2016-2017)
- Junior Associate, SPCG (2013-2016)
- Consultant, PwC (2012)
- Consultant, Deloitte (2010-2011)
Selected transactions and reorganizations:
- Advising on a wind farm network financing deal
- Advising on the sale of one of Poland’s largest shopping malls
- Advice on sales transactions for logistics facilities
- Assistance in selling an office building
- Advice on selling a company in the FMCG sector
- Assistance in selling a chain of luxury jewelry stores
- Advising on the restructuring of a company in the medical industry.
- Advising on the sale of a high-end catering and entertainment venue in a prime location.
Selected proceedings:
- Representing a manufacturing company in successful transfer pricing tax disputes.
- Effective taxpayer representation in complex intra-Community VAT cases
- Representing taxpayers in a precedent-setting case won regarding the taxation of the income of limited partnership partners
- Representing a taxpayer from the real estate industry in a successful real estate tax dispute resolution.
- Representing an injured heavy industry company in cases involving fraud and managerial corruption.
- Effective representation of the injured party in criminal cases related to intellectual property infringement
- Effective defense for the accused in a tax criminal case regarding VAT on intra-Community acquisitions.
- Defending the accused in a complex criminal case involving VAT
- Representing an investment fund company before the Polish Financial Supervision Authority (KNF) and the Supreme Administrative Court
I. M. Polasik, A. Butor-Keler, P. Widawski, G. Keler, Evaluating the Regulatory Approach to Open Banking in Europe: An Empirical Study, Financial Law Review 2024, No. 34
II. J. Błachut, G. Keler, A. Soja, Kodeks karny skarbowy [ENG: Fiscal Penal Code. Commentary], Wolters Kluwer, Warsaw 2024
III. G. Keler, Obowiązki instytucji finansowych w ustawie o Systemie Informacji Finansowej [ENG: Obligations of financial institutions in the Act on the Financial Information SystemI], Monitor Prawa Bankowego 2023, No. 12
IV. Kodeks spółek handlowych. Krajowe i transgraniczne transformacje podmiotowe spółek prawa handlowego. Nowelizacja z 16.8.2023 r. Komentarz [ENG: Code of Commercial Companies. Domestic and cross-border entity transformations of commercial law companies. Amendment of August 16, 2023. Commentary], ed. R. Adamus, B. Groele, Wolters Kluwer, Warsaw 2023 (co-author)
V. G. Keler, Wyłączenie prawa do odliczenia podatku naliczonego w przypadku czynności pozornych lub nieważnych [ENG: Exclusion of the right to deduct input tax in the case of fictitious or invalid transactions], Przegląd Podatkowy 2023, No. 11
VI. Fundacje rodzinne. Komentarz, [ENG: Family Foundations. Commentary], ed. R. Adamus, P. Stec, Wolters Kluwer, Warsaw 2023 (co-author)
VII. G. Keler, Konieczność złożenia pełnomocnictwa szczególnego do akt sprawy w konkretnym postępowaniu – glosa do uchwały NSA z 25.04.2022 r., II FPS 1/22 [ENG: The necessity of submitting a special power of attorney for the case files in specific proceedings – commentary on the resolution of the Supreme Administrative Court of April 25, 2022, II FPS 1/22], Przegląd Podatkowy 2022, No. 12
VIII. G. Keler, Konsekwencje podatkowe umorzenia wierzytelności z tytułu kredytu zaciągniętego przez osobę fizyczną na własne cele mieszkaniowe [ENG: Tax consequences of the cancellation of receivables arising from a loan taken out by a natural person for one’s own housing purposes], Monitor Prawa Bankowego 2022, No. 9
IX. G. Keler, Formy wsparcia płatności bezgotówkowych w tzw. Polskim Ładzie [ENG: Forms of support for cashless payments in the so-called Polish Deal], Monitor Prawa Bankowego 2022, No. 7-8
X. G. Keler, Nowelizacja art. 16a Kodeksu karnego skarbowego wynikająca z Polskiego Ładu [ENG: Amendment to Article 16a of the Fiscal Penal Code resulting from the Polish Deal], Przegląd Podatkowy 2022, No. 1
XI. [ENG: Code of Commercial Companies. Commentary on the amendment. Holding Law. Changes in the functioning of corporate bodies], ed. R. Adamus, CH Beck, Warsaw 2022 (co-author)
XII. M. Polasik, P. Widawski, G. Keler, A. Butor-Keler, Retail Payments Strategy for the EU versus the challenges of the payment sector, Ekonomia i Prawo. Economics and Law 2021, No. 20(3)
XIII. G. Keler, Tax instruments to mitigate the negative impact of the Covid-19 on the economy – the case of Poland [in:] Current challenges for financial law. Collection of Papers from the International Academic Online Conference 22nd – 23rd of April 2021, Comenius University in Bratislava, Faculty of Law
XIV. Prosta spółka akcyjna. Komentarz [ENG: A Simple Joint-Stock Company. Commentary], ed. R. Adamus, P. Malinowski, Wolters Kluwer, Warsaw 2021 (co-author)
XV. [ENG: Restructuring and Insolvency Directive. International and Polish Perspectives], ed. R. Adamus, M. Geromin, B. Groele, Z. Miczek, CH Beck, Warsaw 2021 (co-author)
XVI. G. Keler, Badanie due diligence w transakcjach fuzji i przejęć. Znaczenie i skutki prawne [ENG: Due Diligence in Mergers and Acquisitions: Importance and Legal Consequences], Wolters Kluwer, Warsaw 2021
XVII. Podatek dochodowy od osób prawnych. Komentarz [ENG: Corporate Income Tax. Commentary], ed. A. Obońska, A. Wacławczyk, A. Walter, CH Beck, Warsaw 2016 (co-author)
XVIII. Następne 25 lat. Jakie reformy musimy przeprowadzić, aby dogonić Zachód? [ENG: The Next 25 Years: What Reforms Do We Need to Catch Up with the West?], ed. L. Balcerowicz, A. Łaszek, A. Rzońca, Forum Obywatelskiego Rozwoju 2015 (co-author)
XIX. G. Keler, Model opodatkowania podatkiem akcyzowym wyrobów gazowych [ENG: Model of excise taxation of gas products], Monitor Podatkowy 2015, No. 2
XX. Podatek dochodowy od osób prawnych. Komentarz [ENG: Corporate Income Tax. Commentary], ed. A. Obońska, A. Wacławczyk, A. Walter, CH Beck, Warsaw 2014 (co-author)
XXI. J. Godyń, G. Keler, Zaliczenie do kosztów uzyskania przychodu wydatków związanych z nabyciem instrumentów pochodnych – wybrane problemy [ENG: Recognition of expenses related to the acquisition of derivative instruments as tax-deductible costs – selected issues], Monitor Podatkowy 2011, No. 11
XXII. K. Gil, G. Keler, Opodatkowanie podatkiem kapitałowym pożyczek otrzymywanych od udziałowców – wyrok TSUE z dnia 16 czerwca 2011r. w sprawie Logstor ROR Polska, C-212/10 [ENG: Taxation of loans received from shareholders with capital duty – judgment of the Court of Justice of the European Union of June 16, 2011 in the case of Logstor ROR Polska, C- 212/10], Przegląd Podatkowy 2011, No. 8
Meet our team
Michał Jabłoński, PhD
- Advocate
- ·
- Managing partner
dr hab. Krzysztof Koźmiński, prof. UW
- Attorney-at-law
- ·
- Managing partner
Magdalena Tyka-Jabłońska
- Attorney-at-law
- ·
- Partner
Tomasz Jan Siemiński
- Advocate
- ·
- Partner
Paweł Gutowski
- Advocate
- ·
- Partner
dr hab. Jan Rudnicki, prof. UW
- Of Counsel
dr hab. Artur Olechno, prof. UwB
- Of Counsel
dr Miłosz Kłosowiak
- Of Counsel
Jan Czarnocki LL.M., CIPP/E
- Senior Advisor
- ·
- Senior Advisor
Katarzyna Kuszko
- Advocate
- ·
- Counsel
Andrzej Kraczkowski
- Advocate
- ·
- Counsel
Patrycja Rejnowicz-Janowska
- Advocate
- ·
- Counsel
Wojciech Koźmiński
- Attorney-at-law
- ·
- Counsel
Seweryn Sasin
- Advocate
- ·
- Senior Associate
Karolina Ptak
- Business Development & Marketing Manager
Anna Zając
- Office Manager
Joanna Fedorczyk
- Advocate
- ·
- Senior Associate
Magdalena Tomaszewska
- Chief assistant
- ·
- Main assistant
Anna Chmielewska
- Paralegal
Łukasz Wydra, PhD
- Advocate
- ·
- Partner
Michał Walak
- Paralegal
Patryk Grochowski
- Associate
- ·
- Attorney-at-law trainee
Jakub Kania
- Paralegal
Damian Michalski
- Counsel
Wojciech Kiełbasiński
- Attorney-at-law
- ·
- Partner
Jabłoński Koźmiński i Wspólnicy
Adwokaci i Radcowie Prawni
Spółka Komandytowo-Akcyjna ul. Stanisława Moniuszki 1A, 11th floor
00-014 Warszawa NIP: 7011003997
REGON: 387536717
KRS: 0000964122 +48 22 416 60 04 office@jklaw.pl
Adwokaci i Radcowie Prawni
Spółka Komandytowo-Akcyjna ul. Stanisława Moniuszki 1A, 11th floor
00-014 Warszawa NIP: 7011003997
REGON: 387536717
KRS: 0000964122 +48 22 416 60 04 office@jklaw.pl
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