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Scenario tool — not tax advice

What does taxing unrealized gains cost you?

The Dutch Box 3 debate is about how wealth gets taxed.

Your numbers

Adjust anything. Results update live.

€
€
%
%
Box 3 headline rate ≈ 36% (verify current)

After 30 years

Total deposited: —

No tax
—
Tax paid€0
Gains tax (at sale)
—
Tax paid—
Appreciation tax (yearly)
—
Tax paid—
Yearly-tax costs you extra vs tax-at-sale
—

The gap grows over time

What you'd keep per scenario if you cashed out that year.

No tax
Gains tax (at sale)
Appreciation tax (yearly)

How it actually stands

I'm not a tax advisor.

Now

The current system got struck down

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The 2028 plan

And it's a hybrid, not either/or

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Certain?

No. And that's the part that matters

...

...

Read this before you trust a number.
  • Educational scenario tool, not tax advice.
  • Models the compounding mechanism only.
  • Does not model allowances, brackets, or the current system.
  • Proposed system is not final law.