Kęstutis Kvainauskas

Lawyer, attorney at law, partner of the law firm.

Legal services practice areas

  • Licensing and Compliance
  • Regulatory Affairs and Government Relations
  • Tax
  • Real estate and construction
  • Disputes
  • Public procurement
Expertise and experience

Kęstutis Kvainauskas is ECOVIS International legal partner in Vilnius, Lithuania having more than 20 years of legal practice as Attorney at Law . He is a member of the Lithuanian Bar Association, a registered lobbyist and an arbitrator of Vilnius Court of Commercial Arbitration. In addition, Kęstutis Kvainauskas has academic experience as the lecture on finance and securities law at Mykolas Romeris University in Vilnius.

Before starting his own legal practice, Kęstutis worked at AB SEB Bank having licensed financial broker’s qualification. During this period of work Kęstutis participated in the placement of the first issue of corporate bonds in Lithuania, organizing the first issue of Global Depository Receipts of Lithuanian company, represented AB SEB Bank in acquiring AB Bankas Hermis and AB Vilniaus Bankas, Cargill in acquiring AB Lifosa and Carlsberg in acquiring AB Švyturys.

The expertise of Kęstutis Kvainauskas in the fields of securities, finance and tax covers the formation of the first modern investment index fund in Lithuania and the first specialised US stock investment fund registered in Lithuania. Kęstutis acted as a member of the Management Board of the fund management company having considerable experience in investment fund management. His experience in the field of regulation and drafting legislation also covers official lobbying activities, as Kęstutis is a registered lobbyist.

As an Attorney at Law Kęstutis Kvainauskas currently advises clients in business incorporation, finance and tax law, real estate and construction, represents clients in the court, criminal and tax investigations, dispute resolution. Having long lasting experience in financial sphere Kęstutis specializes in incorporation and licensing of the banks, payment institutions, EMI’s, brokerage firms, investment funds, crowdfunding platforms and other financial institutions providing services in single European market.


1995 to 1999 
Master of Laws (LL.M.)
Vilnius University, Faculty of Law

1990 to 1995
Master of Business Management
Vilnius Gediminas Technical University, Faculty of Business Management

Legal insights
Antsy Lithuania Latest to Anticipate EU Crypto Law With One of Its Own, coindesk.com, 06/06/2022

Advokatas K.Kvainauskas: naujo fintech įmonių antplūdžio iš JK laukti nevertėtų, 15min.lt, 31/12/2020

Vadinamieji bankų turto ir pelno mokesčio įstatymai – smūgis Lietuvos Fintech sektoriui, delfi.lt, 16/12/2019

Kokios yra realios galimybės prisiteisti bankams permokėtas palūkanas už paimtas paskolas? delfi.lt, 15/04/2019

There is more legal clarity in cryptocurrency taxation in Lithuania, ecovis.lt, 28/08/2018

Pan-European Crowdfunding platforms will provide their services across the whole EU, ecovis.lt, 06/04/2018

UK financial institutions will lose EU “passporting rights” after the BREXIT, EU chief negotiator Michel Barnier says, ecovis.lt, 23/11/2017

Suabejojo, ar verta finansiškai remti elektromobilių plėtrą Lietuvoje, delfi.lt, 24/05/2017

Mokesčiai sodininkų bendrijai aktualūs ne visiems? Verta suabejoti, Lrytas.lt, 20/12/2016

Dėl „Snoro“ sertifikatų besikreipusiems į teismus nuostoliai neišvengiami, Vz.lt, 28/11/2016

Mokomės iš svetimų klaidų: kaip jų išvengti renovuojant savo namą, Lrytas.lt, 09/11/2016

Išsiieškodama žalą Rusija privers kitas valstybes šokti pagal savo taisykles? delfi.lt, 24/09/2016

„Snoro“ sertifikatų pirkėjai už savo pergalę verčiami primokėti, Vz.lt, 28/12/2015

Kas trukdo lietuviams nusipirkti butą ir automobilį?, Lrytas, 26/02/2015

Awards and recognitions

Knowledge without experience is of little use. Therefore we are proud of having our own valuable experience to share with you.

Business-minded approach, dedicated team, responsiveness looking for solutions, ready for the extra mile. They are known in the market as brilliant experts of Fintech

ECOVIS Proventuslaw was ranked in Chambers Europe Ranking 2019, 2020, 2021 and Chambers FinTech 2020, 2021, 2022, 2023.

Inga Karulaitytė was recognised as Highly Regarded lawyer in Banking and finance by IFLR1000 2019 and 2020 rankings.

ECOVIS is knowledgeable and helpful on complex matters, and has been able to provide access to subject matter experts in all areas when handling our queries.

ECOVIS ProventusLaw specialists are very flexible and have solutions to every problem we have. It is always a pleasure to communicate with them

Loreta is very sharp-minded. She always looks out of the box, has a vast experience in various sectors and can provide diverse solutions.

Ecovis has a dedicated employment team, which always takes care of the clients’ needs and tries to find the best solution. It doesn’t matter on which side they have to be – on the employee or the employer, Ecovis will ensure that the solution will be found.

Ecovis ProventusLaw is best known in Lithuania for its banking work, where it regularly completes fintech-related deals. They are very good at adapting quickly.

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