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
Belgian Taxation in 2026: What Changes for Individuals and Companies
2026 Tax Reform: Discover New Capital Gains Taxes, Changes for Companies, and Measures to Anticipate in Belgium.
How to optimize your tax return in Belgium without risk?
Discover how to legally reduce your taxes in Belgium: deductions, practical advice, and tax assistance without risk of reassessment.
Expatriate Taxation: Obligations and Opportunities in Belgium
Discover how expatriates can optimize their taxation in Belgium: status, tax returns, international treaties, and advantageous regimes.
Need our services or just some advice?
Contact Us
Tax Law International
(TBTM srl)
Avenue des étriers 3
1150 Brussels – Belgium