We act tax and 
think global

              Our adv ices    provide real ad ded  value and a clear vis ion
in the legal framework (
ius ).

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

Our team consists of Tier-1 tax lawyers. Each experienced lawyer has previously worked for a Tier 1 international law firm.

We see our role as that of your legal partner responsible for clear, short, complete, tailor-made solutions and, if necessary, defending them with the tax authorities.

Providers of strategic advice, directly useful and at first reading understandable recommendations taking into account economic realties and constraints. Full command of administrative and court procedures, including at supranational level. Efficient solutions for your problems and disputes. Full support to your business. Flexibility of an independent firm having a broad informal network: bringing our in-depth tax expertise within exiting team or forming a team of experts perfectly suited for the needs of your project.

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All corporate tax  and legal entities tax topics (restructuring, holding, transfer pricing, private equity, due diligence, investments, funds, real estate, financing, supply chain,  withholdings, local tax).

Providing you with tax advise, reviewing your structuring, obtaining a ruling, conducting your tax due diligence, assisting you during tax audit, defending you with tax litigation


International assets & investments, control structuring, residence, planning and transmission. Individual tax

Providing you with tax advise, reviewing your financial investments  documentation,  structuring your exit in an international context, combining expertise with your foreign tax advisor, obtaining a ruling, assisting you with tax audits, defending you with tax litigation


Stock options and incentive plans, international mobility, special tax regime for impatriates, structures for management and directors, services agreements

Providing you with tax  advise , applying for the impatriates regime, implementing the scheme, obtaining a  ruling , assisting you during tax  audit , defending you with tax  litigation

Our References

Advisius is a law firm founded in 2020. Our first recognition comes from our clients (we warmly thank them for their continuous trust and great work achieved together). We highly value confidentiality about and with our clients. 

Legal directories also recognize our work (we thank our peers for their consideration about our work).


"Young firm with very experienced people mixing agility, creativity and seriousness" (The Legal 500 2023)

"High level of reactivity. Pragmatic solutions. Open to creativity" (The Legal 500 2023)

"Team of leading professionals with experience at reputable international law firms. Strong commitment. No waste of resources, resulting in an excellent price to quality ratio. Great availability and responsiveness" (The Legal 500 2023)

Your Tax Lawyer for Belgium


Information about tax topics and news

Contact us for a personalized information