10 December 2025
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future uncertain start date of capital gains tax in Belgium under discussion

Future Uncertain: Start Date of Belgian Value Added Tax Under Discussion

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Just a week after the federal government announced it would begin collecting capital gains tax on January 1st, the start date of this new tax is now under discussion. Finance Minister Jan Jambon is investigating whether it is legally possible to tax all capital gains realized after December 31st, starting on New Year's Day.

Initially, the House of Representatives was supposed to vote on a law that would allow the capital gains tax by December 31st. However, due to lengthy budget negotiations, this deadline is no longer feasible. Nevertheless, the De Wever government decided last week to introduce the tax retroactively, so that it would, in principle, take effect starting New Year's.

The banking sector is calling for a postponement

However, this arrangement raises numerous legal and practical questions. Can a tax be collected if the law governing it hasn't yet been approved? The banking sector, which is responsible for collecting the tax, advocates for its implementation after the law is approved to avoid operating in a legal vacuum.

"For now, the intention remains for the capital gains tax to take effect on January 1st, and the tax itself is not under discussion," said Jambon's spokesperson. "But there must be sufficient legal guarantees. What's the point of implementing something if it's legally uncertain?"

Practical concerns and stress at banks

For the couches Stress is mounting: they warn of chaos if the new tax is introduced on January 1st without a law being passed. Febelfin, the banking association, argues that in such a scenario, it would be legally impossible to withhold capital gains tax at source.

"The legal basis of the capital gains tax is already complicated, and it's unheard of to ask banks to do the impossible," the bankers said. Febelfin also warns that the situation could become unworkable for customers. "We no longer know what to tell our customers. It's not normal that citizens no longer know how to taxes have to pay.”

Banks are advocating for a delay after the law is approved

Belgian banks advocate for the tax to be implemented only after a law has been officially approved. This gives both banks and citizens the opportunity to understand the final framework of the law, so that everyone can apply it effectively.

In practice, this would mean that citizens wouldn't have to pay any capital gains tax until a vote has taken place. "The sooner that happens, the sooner the government can generate any revenue," says Febelfin. "In our opinion, this is the most logical solution, both legally and operationally."

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