Belgian and International Tax Law Firm
About Us

We act tax and 
think global.​

Assisting you: our role as your top law firm, and not only for Belgium



Tax lawyers 

experts in Belgian and international taxation

Advisius is a tax law firm based in Brussels, dedicated to solving the most complex tax issues in Belgium and internationally. Our team of experts assists companies, executives, and individuals in the strategic management of their tax obligations, with a tailored and proactive approach.

Our motto: We act tax and think global.

Thanks to our in-depth knowledge of Belgian, European, and international tax law, we offer innovative solutions that comply with the latest regulatory developments.

Lawyer​s



Our areas of expertise 
at your service

Transnational and international matters, relating to corporate tax, personal income tax, entity tax, wealth planning

  Belgian taxation

  • Tax rulings
  • Corporate and personal taxation
  • Preferential tax regimes
  • Withholding tax
  • Estate planning

 International taxation

  • Cross-border structuring
  • Transfer pricing
  • Tax residence and expatriation
  • Double taxation agreements

 Tax litigation

  • Tax audit - tax claim - tax litigation



Services

Why choose Advisius?

  • Independent firm specializing exclusively in taxation
  • Recognized expertise in international taxation
  • Strategic and personalized approach
  • A strong national and international network of legal experts, able to swiftly provide a full efficient service


 
French Desk
Values
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Information & News about tax topics 

Discover our news

Stay informed about the latest tax developments in Belgium and internationally. Our lawyers regularly publish analyses of reforms, case law, and administrative practices.

Contact us for personalized information.

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