Estimate Dutch Box 1 income tax on employment and business income using the 2026 brackets.
Box 1 covers employment, freelance, and business income. For 2026: 35.75% up to €38,883 (this bracket already includes national insurance contributions), 37.56% from €38,883 to €78,426, and 49.50% above that.
Illustrative estimate only, using simplified/rounded 2026 Dutch tax figures — not tax advice. Tax credits phase out at higher incomes, which this tool doesn't model precisely. Always confirm with the Belastingdienst or a tax advisor.