Tax Law International - Tax expert in Brussels - specializing in taxation for expatriates, residents, and non-residents.
Based in Brussels, our firm assists individuals, expatriates, and businesses with all their tax procedures: tax declarations, international taxation, company formation, and optimization of professional withholding tax.
Our approach: to make Belgian taxation clear, compliant, and advantageous, with attentive listening and advice tailored to each situation.
Personal Income Tax for Residents (IPP)
Simplify your tax declaration in Belgium.
Our support covers the analysis of your situation, the verification of withholding tax, and the optimization of your deductions.
Learn more about IPP >
Personal Income Tax for Non-Residents (IPP/INR)
Do you work in Belgium without residing there?
We help you correctly complete your non-resident declaration and avoid double taxation.
Learn more about IPP/INR >
Company Formation and Financial Plans
Give your project a solid foundation.
We help you establish a compliant financial plan and choose the legal structure best suited to your ambitions.
View the Company Formation service >
Tax Advice and Support
Gain a clear and strategic vision of your taxation.
Our expertise covers the planning, optimization, and regularization of your personal or professional taxes.
Discover our tax advice >
Advice for Expatriates and Foreign Residents
Expatriate or Foreign Resident?
We guide you through your tax procedures in Belgium to ensure compliance, clarity, and peace of mind.
View our International Taxation service >
Tax Procedures: claim, rectification notice
In case of a rectification or disagreement with the FPS Finance, act quickly.
We assist you with all steps to defend your rights and reduce the risk of penalties.
Discover our assistance with tax procedures >
Charles Desmet,
founder of TAX LAW INTERNATIONAL
Tax expertise for residents, expatriates, and companies
With over 25 years of experience in Belgian taxation, our firm is a recognized reference in Brussels for tax advice and legal optimization. Each year, we assist residents, expatriates, and businesses with their tax procedures, from the most complex tax declarations to the proactive management of audits.
Our expertise is based on in-depth knowledge of the latest case law and daily practice in negotiating with tax authorities.
Result: a rigorous, transparent, and results-oriented approach, serving your tax peace of mind.
Tax News and Advice
Accountant or tax adviser in Belgium: what is the difference and who should you consult?
Accountant or tax adviser in Belgium? Understand their roles and choose the right support for your personal or business tax needs.
Complex tax return in Belgium: who qualifies for 16 October 2026?
Complex tax return in Belgium: check who qualifies for the 16 October 2026 deadline, which income is covered and what documents to prepare.
Company formation in Belgium: why is tax timing strategic?
Setting up a company in Belgium is more than just a visit to the notary. The moment chosen to incorporate your structure can have a direct impact on your tax burden, your cash flow, and your reporting obligations. In a context where Belgian taxation is evolving...
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Contact Us
Tax Law International
(TBTM srl)
Avenue des étriers 3
1150 Brussels – Belgium