What the tax wedge really means

When a Belgian employer spends €100 in total to employ someone, roughly €47 lands in that person's bank account. The other €53 goes to income tax, the employee social security charge (ONSS at 13.07%) and the employer social security charge (ONSS at about 25%).

That 53% gap is the wedge. Not all of it falls on the employee, since the employer covers a large slice, but it makes hiring in Belgium very expensive and makes a Belgian salary far less rewarding than the gross number suggests.

What a Belgian worker actually keeps

Let's put numbers on it. A Belgian software engineer on €60,000 gross a year, single and with no dependents:

Almost 39% of the gross is gone before it reaches the bank. On top of the €60,000, the employer separately pays around 25% in employer ONSS, so the real cost of employing this person is roughly €75,000, which makes the wedge on total cost even more striking.

Belgium's income tax: among Europe's highest top rates

Belgium's top income tax rate is 50%, and it arrives at a surprisingly low point, on income above roughly €46,000 on 2026 figures. Plenty of salaried professionals in Brussels, Antwerp or Liège on ordinary salaries end up paying 50% marginal tax on a chunk of their income long before they would count as a "high earner" in the UK.

For comparison:

• 🇧🇪 Belgium: 50% kicks in at ~€46,000
• 🇩🇪 Germany: 42% kicks in at ~€66,761 (2026)
• 🇫🇷 France: 45% at €177,106
• 🇬🇧 UK: 40% at £50,270; 45% at £125,140
• 🇸🇬 Singapore: 24% maximum, above S$320,000

What Belgium gives back in return

This is where the Belgian system earns some credit. The heavy tax take pays for:

• Universal healthcare (INAMI/RIZIV): broad coverage, low patient co-pays (€0-€11 for a specialist visit), dental cover, and reasonably strong mental health provision
• Generous child benefits (allocations familiales): paid per child, income-independent at the base level, and notably generous for larger families
• Solid unemployment insurance: up to 65% of previous salary for the first 3-6 months, tapering afterwards, over relatively long benefit periods
• Affordable higher education: university tuition typically €1,000-€1,200 a year for Belgian residents
• Wide public transport subsidies: employer-provided train passes are tax-efficient and heavily used

Belgium is especially good for families. Child benefits can offset a real part of the tax bill, and childcare is far more heavily subsidised than in the UK or US.

Reforms in progress

The De Wever government elected in 2024 has been working on tax reform to tackle what economists have long called an excessive burden on labour. The proposals include shifting some load onto capital income, trimming ONSS for certain workers and reshaping the bands. A few measures were pencilled in for 2026, though Belgian coalition politics has kept the rollout gradual.

Who still earns well in Belgium?

Higher earners have increasingly leaned on two structures:

Management companies (société de gestion): self-employed professionals working through their own company can keep profits at the corporate rate (20-25%) and draw a smaller personal salary, cutting their IPP exposure. It is common in medicine, consulting and law, and tends to pay off above roughly €80,000-€100,000 of individual income.

Expatriate regime: Belgium grants a partial tax break to qualifying expats, non-Belgian nationals working there temporarily. Under the regime reformed in 2022, they can exclude 30% of their pay, up to €90,000, from Belgian income tax, which has made the country a good deal more attractive to international professionals than it once was.