About Us

MR. Johannes Aslan m.a. llm



Johannes Aslan is an economist and a lawyer and holds a Masters Degree in Tax Economics and a Master Degree in Tax Law both from the University of Amsterdam. For 15 years Johannes was associated with KPMG Meijburg & Co Tax Lawyers, the last several years as the Head of the MENAT – Desk (Middle East North Africa & Turkey). Mid 2017 he decided to set up his own tax consultancy firm.


Johannes specializes in corporate income tax and international taxation, providing advice to many multinational companies operating in various industries. He has extensive experience in Dutch and international tax planning. The clients advised by him are mainly multinational groups, both Dutch and foreign, both listed and privately held, that are active in amongst others the following industries and sectors: automotive, construction, entertainment, leasing (including aircraft), media, mining, paper & packaging, petrochemical, pharmaceutical, real estate, transport and food.

CAT & Co Tax Lawyers is an independend tax consulting firm

We have a broad range of experience in national and international tax practice. 
Our driven and hard-working team is committed to providing the best possible practical advice, a high degree of transparency, and clear communication with our clients.

Our Mission:

Cat & Co is dedicated to empowering multinational companies navigate the complexities of international and corporate tax law. We leverage our team’s deep expertise in Dutch and international tax to provide clients with clear, practical advice that optimizes their tax positions.

Our Vision:

We envision Cat & Co as the trusted advisor of choice for multinational corporations seeking strategic tax solutions. Through unwavering commitment to client success, transparency, and clear communication, we aim to build long-term partnerships that fuel our clients’ global ambitions.

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