Belgium Tax Guide: Capital Gains Are Taxed Now, at 10%

Belgium sits 207th out of 217 in our world ranking, with a FiScore of 3.3 out of 10. It is one of the most heavily taxed countries in the world on employment: the scale reaches 50% before social contributions, and it gets there quickly.

For decades it had one argument no neighbour could match. That argument changed on 1 January 2026.

What just changed

Since 1 January 2026, Belgium levies 10% on gains from financial assets: shares, ETFs, cryptocurrencies, derivatives.

An annual allowance of EUR 10,000 per taxpayer applies. On EUR 18,000 of gains in a year, only EUR 8,000 is taxed.

You can opt for withholding at source by your bank, which is simpler, or declare yourself, which lets you apply the allowance and offset losses.

Who is caught: resident individuals, and legal entities subject to the legal entities tax. Who is not: non-residents, and companies subject to corporate income tax.

Why this reads differently depending on where you come from

For a French reader this was the end of something. Until the end of 2025 a Belgian individual managing their own portfolio paid nothing on securities gains. That was the European exception, and it is what made Belgium a serious destination for a French entrepreneur who had just sold their company. Against 30% in France, zero was worth crossing a border for. Ten per cent is still low, but the principle is gone.

For a British or American reader the arithmetic is the opposite. You are not coming from zero, you are coming from a system that already taxes capital gains, and taxes them considerably harder than 10%. A move to Belgium does not take away an exemption you had. It replaces your existing capital gains regime with a 10% one carrying a EUR 10,000 annual allowance.

The news that closed a door for one reader opens one for the other. That is worth saying plainly, because every English page currently covering this measure has copied the French framing.

What has genuinely gone is the claim that Belgium does not tax capital gains at all. It does now.

What Belgium keeps

• No wealth tax.
• Inheritance duties that vary a great deal by region, with direct-line rates markedly gentler in Flanders and Brussels than in France on large estates, and heavily used gift mechanisms.
• An inbound taxpayer regime for certain recruited or seconded executives and researchers, under which part of the gross remuneration is treated as employer's own costs rather than as pay. The mechanism is stable; the minimum remuneration and the ceiling have moved more than once, so confirm the current figures rather than trusting any article on them.

For many arrivals the Belgian attraction was about wealth rather than salary. That half still holds.

What it takes

On top of that come high social contributions and a municipal tax that varies from one commune to the next.

If you are American

Citizenship-based taxation applies, and Belgium is a high-tax country, so the foreign tax credit generally does most of the work on employment income.

The 10% gains tax is the part worth modelling: a Belgian rate below your United States rate means the credit does not cover the whole bill, and the difference lands at home. It is a rare case of a low local rate being the awkward one.

If you are British

The statutory residence test decides, and the Belgium treaty allocates. Note that Brussels is close enough that people keep a home, a family and habits in the United Kingdom while claiming to have left, which is exactly the pattern that does not survive scrutiny. Read leaving the UK first.

So, who is Belgium for?

• Passing on an estate: still interesting depending on the region, but the subject needs precise advice, not an article.
• Selling a business, coming from France: the historic advantage has shrunk. Redo the calculation, and compare Portugal and Cyprus.
• Selling a business, coming from the UK or the US: 10% with an allowance may well beat what you have. Worth a serious look.
• An employee: no. It is one of the most heavily taxed countries in the world on work.

The full table of Belgian rates is on our Belgium page, and the comparison tool puts it next to anywhere else. Before deciding anything, read how to actually leave.

Sources

The law introducing the tax on financial asset gains, the SPF Finances and firms established in Belgium, verified in August 2026. An error reported to us gets fixed.

This page informs, it does not advise. Before deciding anything, talk to a professional who will look at your situation, as our terms of use set out.