Estimate your Box 1 income tax and Box 3 wealth tax, including DTAA treaty relief for foreign income and assets - updated for the 2026 tax rules (Belastingdienst rates), no sign-up required.
2026 tax rules · Belastingdienst rates · checked 18 October 2026Only tax figures are read. Your BSN, IBAN and contact details are blacked out before the AI (OpenAI) sees the document, and it is not kept. Privacy
Manual: type the taxable Box 1 income (after deductions) from your annual statement or tax return, to check a return.Each mode uses different information, so the outcome can differ. Quick and Detailed share your gross salary; Manual uses the figure you type.
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Get a personal checklist showing exactly which figure goes in which section of the Belastingdienst aangifte.
View my filing checklistFiling: Individual
| Tax year | 2026 |
| Filing status | Individual |
| Provisional refund received (per month) | € 0 |
| Input method | Taxable income entered directly |
| Taxable income (Box 1) | € 0 |
| Reached AOW (state pension) age | No |
| Labour tax credit applied | Yes |
| Wage tax withheld (loonheffing) | € 0 |
| Box 3 included | Yes |
| Box 3 method | Notional return (forfaitair) |
| Bank and savings balance | € 0 |
| Investments and other assets | € 0 |
| Debts (Box 3) | € 0 |
| Income | |
| Taxable income (Box 1) | € 0 |
| =Taxable income (Box 1) | € 0 |
| Tax by bracket | |
| =Tax before tax credits | € 0 |
| Tax credits | |
| -General tax credit (algemene heffingskorting) = € 3.115 - full credit (income not above € 29.736) | -€ 3.115 |
| -Labour tax credit (arbeidskorting) = € 0 | € 0 |
| Result | |
| =Box 1 tax = tax - credits (not below € 0) + rate cap | € 0 |
| Assets | |
| Savings | € 0 |
| Investments | € 0 |
| Debt threshold (this part is not deductible) | € 3.800 |
| =Total Box 3 assets (rendementsgrondslag) | € 0 |
| Tax-free allowance (heffingsvrij vermogen) | € 59.357 |
| =Assets above the tax-free allowance = € 0 - € 59.357 | € 0 |
| Share of your assets that is taxed = € 0 ÷ € 0 | 0% |
| Return | |
| Return on savings = € 0 × 1.28% | € 0 |
| Return on investments = € 0 × 6% | € 0 |
| =Total return | € 0 |
| =Taxable Box 3 benefit (voordeel) = € 0 × 0% | € 0 |
| Result | |
| =Box 3 tax before treaty relief = € 0 × 36% | € 0 |
| =Box 3 tax | € 0 |
| Tax due | |
| Box 1 tax - Person 1 | € 0 |
| Box 3 tax | € 0 |
| =Total tax due | € 0 |
| Already paid | |
| Wage tax already withheld - Person 1 | € 0 |
| =Total already withheld | € 0 |
| Settlement | |
| =Withheld - tax due (positive = refund, negative = to pay) = € 0 - € 0 | € 0 |
| =Year-end settlement (positive = you get back, negative = you pay) | € 0 |
Planning estimate only, built from 2026 Belastingdienst rates. This is not a filed return or tax advice. Simplifications: AOW-age labor tax credit and pre-1946 bracket omitted; mortgage rate cap and Hillen deduction applied; DTAA relief uses a standard proportional-exemption model, not country-specific treaty text; confirm all figures with a tax adviser before filing.