Box 3: tax on your savings and investments

What counts

• Bank and savings accounts, also abroad.
• Shares, funds and crypto.
• A second home or a home you rent out.
• Minus debts, like a personal loan or student loan. Your home mortgage does not count here.

What matters is the value on 1 January of the tax year. Changes later in the year don't count.

The tax-free amount

The first €3,800 of debts per person also doesn't count.

How the tax is worked out

The Belastingdienst assumes a return on what you own, then taxes that return at 36%.

Example: €100,000 in savings in 2025

1. Assumed return: 1.37% of €100,000 = €1,370.
2. Part above the tax-free amount: €100,000 − €57,684 = €42,316, which is 42.3% of the total.
3. Taxable return: 42.3% of €1,370 = €580.
4. Tax: 36% of €580 = about €209.

If your real return was lower

For 2025 and 2026 you can also report your actual return, for example if your shares went down. The Belastingdienst then uses whichever gives you the lower tax.

This is optional. Mijn Belastingdienst asks about it when your savings are above the tax-free amount.

Expats

If you live here, savings and investments abroad count too. If you had the 30% ruling in December 2023, you may be able to leave them out for 2025 and 2026. See our 30% ruling guide.