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Marius Ionescu

Tax Partner

+40 31 225 33 70

Practice areas


Marius Ionescu is a widely recognized tax professional with 25 years of experience in local and international tax consultancy firms, reflected in a high-caliber portfolio of clients in a wide range of industries. Marius is a Certified Tax Advisor and a member of the working groups advising the Ministry of Finance on the amendment of the Fiscal Code. Recognized by specialized international guides, such as World Tax, he is a frequent speaker at domestic and international tax events and a contributor to economic newspapers and TV broadcasts on tax issues. His practice focuses on:

  • investment tax structuring
  • tax planning
  • transaction tax advice
  • restructuring tax advice
  • tax health-check
  • tax due diligence
  • tax compliance
  • assistance in dealing with tax authorities
  • tax litigation
  • agency and representation
  • design of tax procedures and implementation of tax functions
  • customized training
  • transfer pricing


Included in international rankings since 2016; most recently:

  • Leading Individual, Tax (Legal 500, 2023)
  • Ranked, Tax (Chambers and Partners, 2023)


  • Academy of Economic Studies, Bucharest, International Relations School, Degree in Economics
  • Certified Tax Consultant

Memberships and Affiliations

  • Romanian Chamber of Tax Advisors
  • American Chamber of Commerce in Romania, Taxation Task Force

Notable Contributions

  • speaker at NNDKP Legal & Tax Conference 8th edition (2023)
  • speaker at the NNDKP CELF event in Timisoara – Tax Disputes in The Digital Era (2023)
  • speaker at the second NNDKP CELF event organized in 2023
  • speaker at the “Legal&Tax Conference, 7th edition, organized by NNDKP and Ziarul Financiar (2022)
  • speaker at the “Legal&Tax Conference, 6th edition – What will be the impact of the National Recovery and Resilience Plan on the economy and business; what are the fiscal and legislative changes to come?”, organized by NNDKP and Ziarul Financiar (2021)
  • speaker at the “Romanian Economic Forum” on the topic of “the potential fiscal and legislative impact that the NRRP will have on the economy and the business environment”, organized by Finmedia and Piata Financiara (2021)
  • speaker at the NNDKP CELF Conference: Fiscal disputes in times of the pandemic, organized by NNDKP and Ziarul Financiar (February 2021)
  • speaker at the “Legal&Tax Videoconference, 4th edition – How does Romania handles the global pandemic’s impact on its local economy”, organized by NNDKP and Ziarul Financiar (2020)
  • speaker at the events “Legal&Tax Conference, 2nd and 3rd editions – How do we manage tax and (macro)economics risks in 2020?”, organized by NNDKP and Ziarul Financiar (2019 and 2020)
  • speaker at Tax EU Forum 2020, organized by Evensys (2020)
  • speaker at the event “Trends: Economy. Business.Tax”, organized by NNDKP and Ziarul Financiar (2018)
  • speaker at the “Tax & Law Conference” organized by Business Review (2018)
  • speaker at Business Talks, a series of events organized by NNDKP and BCR Pensii (Bucharest, Timisoara and Cluj-Napoca, 2017-2018)