Belgium vs Netherlands: Tax Comparison for Self-Employed

Published: · 9 min read · By Taxmo

Quick Answer

For self-employed in 2026, the Netherlands taxes Box 1 income at about 35.75% on the first ~EUR 38,883 (including AOW premium) and about 49.5% above, softened by the zelfstandigenaftrek (EUR 1,200 in 2026) and the 12.7% MKB-winstvrijstelling, with no separate self-employed social contribution. Belgium uses 25% / 40% / 45% / 50% brackets (top rate above EUR 51,070), a 6-9% municipal surcharge, and separate sociale bijdragen of 20.5% on the first EUR 75,024.54 of professional income. The effective top marginal rate is higher in Belgium once the municipal surcharge is added. Both apply EU VAT: NL at 21%/9%/0%, BE at 21%/12%/6%/0% with the Peppol e-invoicing mandate from 2026.

  • NL Box 1 2026: ~35.75% up to ~EUR 38,883, ~49.5% above.
  • BE brackets 2026: 25% / 40% / 45% / 50% above EUR 51,070, plus 6-9% municipal surcharge.
  • BE sociale bijdragen: 20.5% on the first EUR 75,024.54, 14.16% up to EUR 110,562.42.
  • NL incentives: zelfstandigenaftrek EUR 1,200 (2026), MKB-winstvrijstelling 12.7%, 30% ruling.
  • VAT rates: NL 21% / 9% / 0%; BE 21% / 12% / 6% / 0%.

If you're choosing between Belgium and the Netherlands as a base for self-employed work, this guide compares the most important tax dimensions: income tax brackets, social contributions, VAT regimes, deductions, and administrative complexity.

Income tax brackets (2026)

Netherlands: Box 1 progressive, ~35.75% on the first ~EUR 38,883 (including AOW premium) and ~49.5% above. Plus zelfstandigenaftrek and MKB-winstvrijstelling for ZZP'ers.

Belgium: 25% / 40% / 45% / 50% brackets, with the top rate starting above EUR 51,070 (income year 2026). Plus 6-9% municipal surcharge.

Effective top marginal rate is higher in Belgium when municipal surcharge is added.

Social charges

Netherlands: ZZP'ers pay AOW/Anw/Wlz via Box 1 income tax. No separate self-employed contribution. Pension is voluntary (jaarruimte deduction available).

Belgium: Separate sociale bijdragen of 20.5% on the first EUR 75,024.54 of professional income (2026), 14.16% up to EUR 110,562.42. Mandatory affiliation with a sociaal verzekeringsfonds.

VAT

Both countries use the EU VAT directive. Netherlands has 21% / 9% / 0% rates and quarterly filing for most ZZP'ers. Belgium uses 21% / 12% / 6% / 0% with quarterly filing under EUR 2.5M turnover and the Peppol e-invoicing mandate from 2026.

Deductions and incentives

Netherlands: zelfstandigenaftrek (EUR 1,200 in 2026, declining), startersaftrek, MKB-winstvrijstelling (12.7%), 30% ruling for skilled migrants.

Belgium: investment deduction, copyright income regime (15% up to an indexed cap), mileage and home-office regimes, social contributions fully deductible.

Administrative complexity

Belgium requires more separate touchpoints (KBO, BTW administration, sociaal fonds) but bookkeeping rigour is similar. Netherlands consolidates almost everything through the Belastingdienst, though SBR/Digipoort filings need software support.