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The figures compared

Every number here is produced by the site's own tax engine for that country. Open the full calculator if you want to tune the assumptions to your own case.

Gross salary 🇳🇱 Netherlands net/mo 🇧🇪 Belgium net/mo
40,000 €2,864/mo (14.1%) €2,320/mo (30.4%)
60,000 €3,598/mo (28.0%) €3,071/mo (38.6%)
80,000 €4,331/mo (35.0%) €3,754/mo (43.7%)
100,000 €5,064/mo (39.2%) €4,428/mo (46.9%)

Gross salary appears in each country's own currency at matching nominal values rather than converted, which is what you want when weighing up two offers quoted locally. The effective rate is in brackets.

The Belgian tax wedge ranks among the OECD's heaviest

Belgium pairs a steep progressive income tax, reaching 50% above 48,320 euros, with a flat employee social security contribution of 13.07% that applies to all gross salary with no ceiling. Unlike most countries, there is no point at which Belgian social contributions stop growing with income. Layer on municipal surcharges of roughly 7% of federal tax and the effective rate passes 55% well before 100,000 euros. Our full breakdown of the Belgian 52.7% tax wedge takes it apart.

For qualifying expats, the Dutch 30% ruling rewrites the answer

Standard Dutch rates already beat Belgian ones comfortably, as the table shows. For foreign employees recruited from abroad with specific expertise, though, the Dutch 30% ruling allows as much as 30% of salary to be paid entirely free of tax, subject to income thresholds and the tapering schedule introduced by the 2024 reform. A qualifying expat on 80,000 euros can see take-home rise well beyond the 4,331 euros/month shown here, sometimes by a further 500 to 800 euros a month. Our 30% ruling explainer covers eligibility and the current thresholds.

Questions readers ask

The Netherlands, at every income level, and frequently by a very wide margin. At 40,000 euros a Dutch earner takes home roughly 2,864 euros/month against 2,320 euros/month in Belgium, a difference of nearly 25%, driven by the uncapped Belgian social security contribution of 13.07% and a steep progressive tax scale.

Belgium runs progressive income tax up to 50% alongside a flat employee social security contribution of 13.07% that applies to all gross salary with no ceiling, and adds municipal surcharges worth roughly 7% of federal tax. Together those push the Belgian tax wedge to among the highest anywhere in the OECD.

The 30% ruling permits qualifying foreign employees recruited from abroad to receive up to 30% of salary tax-free, subject to a minimum salary threshold and a tapering schedule under the 2024 reforms. For those who qualify it can add several hundred euros a month to take-home. Our dedicated guide covers the current rules.

It does not. These are nominal take-home figures at matching gross salary. Amsterdam and Brussels sit at broadly similar cost levels, so most of the Dutch take-home advantage carries through into real purchasing power.