🇳🇱 Free Dutch calculators — tax & benefit rates updated for 2026

Disclaimer

Please read this before you rely on any result.

Last updated October 2026

Financial, tax and legal calculators

Salary, tax, mortgage, lease, severance, box 3 and similar tools use simplified models and published 2026 parameters. Personal circumstances such as partner income, other jobs, foreign income, collective agreements, lender policies and recent law changes can change the outcome. A payslip, tax assessment, mortgage offer or court ruling always overrides what a calculator shows.

Health and fitness calculators

Calorie, protein, FFMI, 1RM, pace and cycle tools are general guides. QTc, TI-RADS and other clinical calculators are intended for use by or with a healthcare professional and are not diagnostic. Never delay or ignore medical advice because of a result on this site. In an emergency call 112.

Astrology, numerology and gematria

These pages are for entertainment and reflection. The astronomical positions are computed approximately, and the interpretations have no scientific basis.

Currency and forex

Exchange rates are indicative mid-market rates and may be delayed or unavailable. Forex trading carries a high risk of loss, and position-size tools are not trading recommendations.

DIY and material calculators

Quantities are estimates. Measure carefully, add waste and confirm with your supplier before ordering.

No responsibility for decisions

You use the site at your own risk. See our Terms of Use.