How it works
Apply each progressive rate only to the income slice within its bracket. Deduct only the standard credits explicitly included in this tool’s scope.
Input definitions
- Annual taxable income AFTER deductions (EUR)
- Enter the value in the labeled unit.
- Supported situation
- Choose 66 or younger; full-year insurance; before credits.
- Rules year
- Choose 2026.
A worked example
- Annual taxable income AFTER deductions (EUR)
- 38883
- Supported situation
- 66 or younger; full-year insurance; before credits
- Rules year
- 2026
Assumptions & limits
Age 66 or younger throughout 2026; full-year liability to Dutch national insurance. Taxable Box 1 income AFTER deductions. Includes national insurance in the first bracket; BEFORE tax credits. Excludes AOW transition/older ages, Boxes 2/3, health insurance and cross-border cases. Not salary net. Decimal arithmetic, final currency output rounded half up to 2 decimal places. Germany rounds taxable income and tariff tax down to whole euros. Not payroll withholding or a tax-return filing calculation.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Does a tax estimate include every credit, relief and payroll deduction?
Only items explicitly listed in the supported scope are included. Check the stated tax year, country, income definition and exclusions before comparing with an official return or payslip.
How does the Netherlands Box 1 tax — before credits tool work?
Apply each progressive rate only to the income slice within its bracket. Deduct only the standard credits explicitly included in this tool’s scope.
What are the assumptions and limits of Netherlands Box 1 tax — before credits?
Age 66 or younger throughout 2026; full-year liability to Dutch national insurance. Taxable Box 1 income AFTER deductions. Includes national insurance in the first bracket; BEFORE tax credits. Excludes AOW transition/older ages, Boxes 2/3, health insurance and cross-border cases. Not salary net. Decimal arithmetic, final currency output rounded half up to 2 decimal places. Germany rounds taxable income and tariff tax down to whole euros. Not payroll withholding or a tax-return filing calculation.