Advicero provides complex tax advisory and accounting outsourcing services.

Through our network of cooperating entities we also cover legal advisory and audit needs.

Advicero was established in 2012. We work for large multinational as well as Polish entities. Our advisers have years-long experience and deep knowledge of the Polish market, delivering our Clients first class advisory services.

In 2015 Advicero was awarded as the overall winner in the category for the fastest growing company in Poland, according to the Ranking of Tax Advisory Firms published by the highly respected Polish national newspaper "Rzeczpospolita„, and in the following years regularly rated highly in analogous rankings.

Advicero is associated with NEXIA International, one of the 10 biggest worldwide networks of accounting and consulting firms. Through the network of NEXIA offices we offer support to our Clients not only in Poland, but also abroad.


Advicero is driven by people with extensive expertise within their field and passionate about the work they are doing.
We are professional, open and creative, which allows us to respond adequately to the needs of our Clients, solve their most complex issues and meet the highest demands. Our passion, knowledge, skills, sense and the experience gained, guarantee a very extensive spectrum of high standard services.

  • Katarzyna Klimkiewicz-Deplano

    Managing Partner, Tax Adviser

    Katarzyna is Managing Partner of Advicero. Katarzyna is certified Tax Advisor since 2003, gathering professional experience since 2000. During her professional career Katarzyna has worked for international consulting firms, including Big Four (years 2000-2006), starting from 2009 she acts as Partner (till 2012 in an international advisory company, later on in Advicero). Katarzyna specializes in transaction advice. She has broad experience of advising on acquisitions and disposals of assets, in particular in relation to renewable energy and real estate projects, as well as related financial restructuring. Katarzyna has advised and supported numerous restructuring projects, designing solutions to optimize both the transactional and ongoing tax exposure, her experience includes: mergers, liquidations, transformations and in-kind contributions. Katarzyna has acted as an advisor to numerous German and Austrian open-ended and closed investment funds on both transactional and on-going activities, including acquisitions and disposals via asset or share deals, restructurings aimed at tax optimization, obtaining tax exemption for Polish sourced income. Katarzyna has broad experience in advising renewable energy entities, in particular in project acquisition, financing, elaboration business plans, settlement of sale of green certificates. She provides on-going advice for companies active in Renewable Energy, Real Estate and Retail sectors. She also has experience in representing her clients in disputes with tax authorities as well as in front of Administrative Courts. Katarzyna is author of numerous articles in periodicals and business dailies, she is also editor and co-author of the book issued in 2011: “Restructuring of corporations – tax aspects”, as well as the report “Hotel Guidebook”. Katarzyna has been lecturer in numerous trainings, seminars and conferences in Poland and abroad.Katarzyna graduated from Warsaw School of Economics (Master of Economics, 2000). She has also studied at Leopold Franzens University in Innsbruck in Austria (1999-2000) and graduated from Post-Diploma Studies of European Law at Warsaw University (2003-2004). In 2018, in the XII Tax Advisory Firms Ranking published by "Rzeczpospolita” daily she has been awarded in the category of the best specialists in international tax law. Katarzyna provides tax advice in Polish, English and German.

  • Sławomir Patejuk


    Sławomir Patejuk is a Partner in the Advicero tax department. He has been gaining professional experience since 2007 - in 2007-2012, he worked in an international tax consulting company, where he was responsible, among others, for servicing German-speaking customers and Polish enterprises with their interests. Sławomir specializes in servicing entities operating on the commercial real estate market and enterprises from the energy sector - in particular operating in the renewable energy sector. During his professional practice, he took part in servicing the restructuring processes of companies (mergers, transformations and liquidations of companies, share trading, share exchange transactions, creation of holding structures using foreign entities and partnerships) and transactions related to purchase, sale and restructuring of financing of commercial real estate (including transactions made on the Polish market by foreign investment funds). He was also involved in numerous projects related to the tax settlement of companies (Due Diligence and Tax Review), ongoing tax consultancy in the field of corporate taxation for entities operating on the Polish market (VAT and income taxes), analysis of taxation of cross-border transactions, consultancy for foreign entities operating in Poland in the form of branches and agencies, settlements of taxpayers of goods and services tax (VAT Compliance), optimization in the scope of taxation of real estate tax. Sławomir also has experience in proceedings before tax authorities and administrative courts. He is the author of tax publications in the national and foreign press as well as a lecturer at tax trainings and workshops. Sławomir graduated from the Warsaw School of Economics (Master of Economics, Finance and Accounting and Spatial Management), and also studied as part of the JOSZEF program at the Viennese Wirtschaftsuniversität Wien, Austria (2006-2008). Sławomir offers legal advice in Polish, German and English languages.

  • Aneta Bugalska

    Accounting & Payroll Manager

    Aneta Bugalska has a position of the Accounting & Payroll Manager in Advicero. She has a license for bookkeeping services. She has been gaining professional experience since 2000. During her career, she cooperated with international consulting companies, including in years 2011-2016 with companies from the so-called Big Four. Since 2018 she has been associated with Advicero. Aneta specializes in accounting of international companies, has extensive experience in the field of taxation, accounting and reporting both in accordance with Polish law as well as IAS and US GAAPS. She participated in many projects in the field of transformation of business entities (mergers, acquisitions, liquidations), tax optimization, reconstruction of accounting books and tax corrections. At Advicero she oversees the work of the Accounting Department. She graduated from the University of Warsaw with master's degree in Accounting and Finance. Aneta provides advice in Polish and English.

  • Aleksandra Woś

    SENIOR MANAGER, tax adviser

    Aleksandra is a Senior Manager at Advicero. She is a licensed tax advisor. Since 2007, she has gained experience in tax consultancy, in particular, specializes in income tax, as well as in aspects of international tax law. It carries out both full and limited tax reviews as part of the audit of financial statements in entities from various industries. Aleksandra also advises clients on various tax issues related to running a business in Poland. She is a graduate of the Warsaw School of Economics. She advises in Polish, English and German.

  • Joanna Skibicka

    Manager, Tax Advisor

    Joanna Skibicka is Manager and licensed Tax Advisor at Advicero’s tax department. She graduated law at Niocalus Copernicus University in Toruń. Joanna has nine year old crosscutting professional experience in the field of tax law. She specializes in proceedings before tax authorities and administrative courts. Joanna is author of articles on tax issues in periodicals and business dailies. She is also a speaker during tax courses. In 2018, in the XII Tax Advisory Firms Ranking published by "Rzeczpospolita” daily she has been awarded “The Rising Star of Tax Advisory”. Joanna provides tax advice in Polish and English language.

  • Dorota Jędrysiak

    Supervisor accounting & payroll

    Dorota is a supervisor in the accounting department. She has a license for bookkeeping services. She has been gaining experience since 2007. In the years 2007 - 2013 she worked in an international consulting company. Since 2013 she cooperates with Advicero. The main duties include substantive supervision over the keeping of accounting books, preparation of financial statements and other reports, servicing of tax audits and audits. She graduated from the University of Wrocław at the Faculty of Law and Administration and post-graduate studies at the Warsaw School of Economics in the field of Finance and Accounting.

  • Monika Szeremet

    Marketing & Business Development Manager

    Monika is Marketing & Business Development Manager at Advicero. Since 2013, she was associated with international consulting firms, including Big Four companies, and since 2018 began the adventure with Advicero. She is responsible for coordinating all marketing, PR and sales activities. Monika is an enthusiast of unconventional solutions, psychological research and mechanisms of human behavior.. She graduated of Business Psychology with a specialization in Human Resource Management at the SWPS University in Warsaw. Monika communicates in Polish and English.

Advicero Tax is a member of the “Nexia International” network (Nexia). Nexia is a leading, global network of independent accounting and consulting firms. When you choose a Nexia firm, you get a more responsive, more personal, partner-led service, across the world. read more“Nexia is a highly active network that drives quality and facilitates collaboration to enable its member firms to provide effective local and global solutions. Nexia member firms deliver a partner-led service to clients which ensures continuity, expertise and a deep understanding of the client’s business. They are characterised by people who have an entrepreneurial spirit and who can relate closely to the SME and owner-managed businesses. Nexia firms are focused on supporting local businesses as they grow and through the Nexia network, they can also help their clients confidently venture into new international markets. Nexia International Limited, a company registered in the Isle of Man which operates the Nexia International network, does not deliver services in its own name or otherwise. Nexia International Limited and the member firms of the Nexia International network (including those members which trade under a name which includes the word NEXIA) are not part of a worldwide partnership. Nexia International Limited does not accept any responsibility for the commission of any act, or omission to act by, or the liabilities of, any of its members. Each member firm within the Nexia International network is a separate legal entity. The trade marks NEXIA INTERNATIONAL, NEXIA and the NEXIA logo are owned by Nexia International Limited and used under licence. References to Nexia or Nexia International are to Nexia International Limited or to the “Nexia International” network of firms, as the context may dictate. For more information, visit www.nexia.com.

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