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JKLAW

Barbara Błaszczak

  • Associate
Contact
+48 22 416 60 04
barbara.blaszczak@jklaw.pl
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Areas of practice
  • Regulatory advisory & Compliance
  • Tax law

A lawyer and economist, Barbara is a PhD candidate in the Doctoral School of Social Sciences at the University of Warsaw, specializing in legal studies. After passing the tax advisor exam, she is awaiting entry onto the list of tax advisors. She graduated with honors in Finance, International Investment, and Accounting from the Faculty of Economics at the University of Warsaw and with honors in law from the Faculty of Law and Administration at the University of Warsaw. She also completed the School of German and European Law at the Faculty of Law and Administration at the University of Warsaw, and the Faculty of State and Law at the Rhenish Friedrich-Wilhelms University in Bonn.

She has received numerous scholarships and awards related to her research (including a scholarship from the Ministry of Education and Science’s “Szkoła Orłów” program for exceptionally talented students, a scholarship from the Rector of the University of Warsaw for the best students, a “Stypendium na Start” awarded by the Rector of the University of Warsaw to the best doctoral students in their first year of education, and a scholarship from the National Science Centre grant implemented at the Institute of Philosophy and Sociology of the Polish Academy of Sciences). She is the author of several scientific publications in the field of taxes, the economics of taxation, tax law, public financial law, and the economic analysis of law, and a speaker at international scientific conferences, including those in Washington and London.

Winner of the 12th edition of the nationwide “Podatkowi Liderzy” competition organized by the Ministry of Finance, and first place winner in the 11th edition of the competition for the best master’s thesis in the field of tax law, “Podatki proste jak drut,” organized by the Masovian Branch of the National Chamber of Tax Advisers.

She has several years of experience in tax consulting, gained at renowned Polish and international tax consulting firms.
As part of his teaching activities, he conducts classes in public finance and public financial law as well as tax law, including turnover and income taxes, at the Faculty of Law and Administration of the University of Warsaw.

  • Master of Laws, Faculty of Law and Administration, University of Warsaw (2023)
  • Bachelor of Science in Finance, International Investment and Accounting, Faculty of Economics, University of Warsaw (2022)
  • School of German and European Law at the Faculty of Law and Administration of the University of Warsaw and the Faculty of State and Law of the Rhenish Friedrich Wilhelm University in Bonn (2021)
  • Doctoral School of Social Sciences, University of Warsaw, doctoral studies, discipline: legal sciences (currently)
  • 2020 – 2021 – Internship at Instytut Studiów Podatkowych Modzelewski i Wspólnicy
  • 2023 –2024 – Junior Tax Consultant at Instytut Studiów Podatkowych Modzelewski I Partnerzy
  • 2024 – 2025 – Tax Consultant II at KPMG Tax M. Michna
  • Tax consultancy for international companies (in particular in the field of value-added tax);
  • Tax compliance;
  • Legal assistance for entrepreneurs, individuals, and non-governmental organizations;
  • Experience in preparing opinions and reports in the field of taxes and tax law.
  • Batrancea, L. M., Kudła, J., Błaszczak, B., & Kopyt, M. (2022). Differences in tax evasion attitudes between students and entrepreneurs under the slippery slope framework. Journal of Economic Behavior & Organization, 200, 464–482. https://doi.org/10.1016/j.jebo.2022.06.017
  • Błaszczak, B. (2024). THE THEORY OF WELFARE ECONOMICS AND TAX REGULATIONS: AN EMPIRICAL EXAMPLE OF PIGOUVIAN TAXES. Studia Iuridica, vol. 102, pp. 23-35. https://doi.org/https://doi.org/10.31338/2544-3135.si.2024-102.1.
  • Błaszczak, B., Wagstyl, A. (2024). Closer than You Thought. Constitutional Grounding of the Social Market Economy in Poland and Italy, Przegląd Prawa Konstytucyjnego , no. 2, pp. 243–254, https://doi.org/10.15804/ppk.2024.02.17 .
  • Błaszczak, B., Błaszczak, I., Chojnacki, W. (2023). TAX INCENTIVES TO PROMOTE NATIONAL HERITAGE PROTECTION BY THE PRIVATE SECTOR. Transformations , vol. 4 (119), pp. 200-214, ISSN: 1230-0292, e-ISSN 2719-7158.
  • Błaszczak, B. (2023). International Compliance Assurance Programme jako przykład dialogu między podatnikami a administracją podatkową [ENG: International Compliance Assurance Programme as an example of dialogue between taxpayers and the tax administration]. Tax Advisory. Bulletin of the Institute of Tax Studies, 3(319), DOI: 10.5604/01.3001.0016.3340.
  • Błaszczak, B. (2022). Nowe ulgi na innowacje w podatku dochodowym od osób prawnych – ulga na robotyzację oraz ulga na prototyp [ENG: New tax relief for innovations in corporate income tax – relief for robotization and prototype relief]. Doradztwo Podatkowe. Biuletyn Instytutu Studiów Podatkowych, 8(312), DOI: 10.5604/01.3001.0015.975.
  • Batrancea, L. M., Kudła, J., Błaszczak, B., & Kopyt, M. (2023). A dataset on declared tax evasion attitudes of students and entrepreneurs from Poland under the slippery slope framework. Data in Brief, 48, 109183. https://doi.org/10.1016/j.dib.2023.109183 .
  • Śliz, A., Szczepański, MS, Podkowińska, M., Błaszczak, I., & Błaszczak, B. (2023) Potyczki z pandemią. Życie codzienne Polaków w czasach zarazy [ENG: Encounters with the pandemic. Everyday life of Poles in times of plague], Warszawa: Oficyna Wydawnicza ASPRA, ISBN: 978-83-8209-255-4.
  • Błaszczak, B. (2024). Rozważania o podmiotowości prawnopodatkowej na gruncie podatku od towarów i usług – przykład spółki cywilnej [ENG: Considerations on legal and tax subjectivity in the context of value added tax – the example of a civil partnership]. Doradztwo Podatkowe. Biuletyn Instytutu Studiów Podatkowych,, no. 4/2024, DOI: 10.5604/01.3001.0054.4899.
  • Błaszczak, B. (2020). Wszczynanie postępowań karnych skarbowych w celu zawieszenia biegu terminu przedawnienia – analiza wybranego orzecznictwa. [ENG: Initiating tax criminal proceedings in order to suspend the limitation period – analysis of selected case law]. Doradztwo Podatkowe. Biuletyn Instytutu Studiów Podatkowych, 12(292), ISSN 1427-2008.
  • Koźmiński, K., Błaszczak, B. (2025). Umowa o międzynarodowej kolejowej komunikacji towarowej (SMGS) a ochrona interesów stron umowy przewozu – analiza mocy prawnej i sankcji za naruszenie [ENG: The Agreement on International Rail Freight Transport (SMGS) and the Protection of the Interests of the Parties to the Transport Contract – Analysis of the Legal Effects and Sanctions for Violation]. Doradztwo Podatkowe – Biuletyn Instytutu Studiów Podatkowych, 6/2025, pp. 4-10, DOI: 10.5604/01.3001.0055.1889;
  • Koźmiński, K., Błaszczak, B. (2025). Naruszenie interesów podmiotów niebędących stroną umowy przewozu towarów odbywającego się na zasadach Umowy o Międzynarodowej Kolejowej Komunikacji Towarowej (SMGS) – analiza dostępnych instrumentów prawnych [ENG: Infringement of the interests of entities not being parties to the contract for the carriage of goods under the Agreement on International Goods Transport by Rail (SMGS) – analysis of available legal instruments]. Przegląd Prawa Publicznego, 2025/7-8, pp. 128-141, ISSN: 1896-8996.

Meet our team

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Jabłoński Koźmiński i Wspólnicy
Adwokaci i Radcowie Prawni
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  • Home
  • About us
  • Our Team
  • Areas of practice
    • Dispute Resolution
      Real Estate & Construction Law
      Commerce & Distribution
      Regulatory advisory & Compliance
      Public procurement
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