The amount of Dutch income tax due is the aggregate amount calculated over the income in Box 1, Box 2 and Box 3. Each Box has its own tax rate.
For the income in Box 1, the rates are progressive with a top rate of 49.50% for 2023.
For Box 2 and Box 3 income, the rate is (flat) 26.9% and 32% respectively (rates 2023). See further the section Tax rates for individuals.
The amount of income tax due, can under certain conditions be reduced with:
The aforementioned tax credits and exemptions must be claimed in the annual income tax return. Under certain conditions a preliminary (monthly) refund during the calendar year can be applied for.
The Dutch income tax due or refund will become payable/ refundable once a preliminary or final assessment for the year has been imposed. See further the section Tax assessments, tax payments and tax refunds.