J&M Consulting Chartered Accountants & Tax Advisors

“Quality over Quantity”
tel: +48 22 789 55 06

Our services:


Carefully selected team of specialists work for us, using purpose-designed accounting software network.

Mrs. Małgorzata Banasiewicz - the company co-owner and chairman of the board - graduated with honours in 1980 and received Master of Economy degree, University of Warsaw. Later worked at University of Warsaw, department of Econometrics. Having completed postgraduate Tax Program at Warsaw School of Economics, she started her own licensed accounting and tax advising limited company. Please kindly notice that services of tax advising in Poland can be provided only by persons listed on tax advisers list provided by The National Chamber of Tax Advisers. In order to get on permanent National Register of Tax Advisers one is required to have relevant practice and pass a number of difficult professional exams. We are pleased to inform you that Mrs Banasiewicz is registered at National Register of Tax Advisers. In J&M Małgorzata Banasiewicz takes the responsibility for our clients all accounting and tax affairs.

Mr. Janusz Banasiewicz - the company co-owner and managing partner graduated with honours in 1980 and received Master of Journalism & Political Science Degree, University of Warsaw. After several years of journalism he proceeded to the successful business and social activities. His professional experience coming from high level courses and from participation as a board member in various companies, foundations and associations. Such knowledge and experience allowed him to join J&M as a partner responsible for business advice, general managament, payrolls, social security (ZUS), and labour law. For his outstanding service to Poland awarded by the President of Poland state orders - silver and gold Cross of Merit.

Ms. Natalia Banasiewicz - a Polish qualified licensed tax advisor (since 2009) and advocate (since 2013) with experience in tax, commercial and civil law having  an extensive experience in working in an international environment. In 2007 Natalia Banasiewicz started her professional career by joining Deloitte’s tax department. Between 2008 and 2016 she worked as a tax advisor at a global law firm White & Case where she was responsible for tax advisory services. She also worked as a trainee for Deutsche Bank at Frankfurt office and for Polish consulting company MDDP  as well as German law firm Gleiss Lutz. Natalia Banasiewicz graduated with distinctions from the University of Warsaw in two faculties: law (2009) and journalism (2006). She also studied for a year at the Law faculty of University of Konstanz, Germany. On the top of regular lectures she attended two additional programs at the University of Warsaw: a year-long German Law School and Center of American Law. She speaks Polish, English and German.