You hold Bitcoin with a big gain and resell it. How is that gain taxed in the Netherlands?

The gain isn't taxed: crypto is taxed in Box 3 on the value held. The Netherlands doesn't tax the gain on a sale. Crypto sits in Box 3 and the tax falls on a deemed return on the value of your assets, not on the gain realised by selling.

In Box 3, which reference date is used to value your wealth?

1 January. Box 3 takes a snapshot of your wealth on 1 January. It's the value of your assets on that date that determines the tax, not when you sell.

What does the figure of roughly 2.16% a year cited for crypto in Box 3 represent?

An educational estimate of the effective Box 3 burden — indicative and evolving. The ≈2.16%/year is an educational estimate of the effective Box 3 burden on crypto. The exact figure depends on the year's deemed-return percentages and your wealth, and Box 3 is under reform.

Where do you declare your crypto wealth in the Netherlands?

In your income-tax return (aangifte inkomstenbelasting), in Box 3, to the Belastingdienst. You declare your Box 3 wealth in your aangifte inkomstenbelasting to the Belastingdienst. Dutch resident = you declare yourself; a French account doesn't do it for you.

Crypto tax in the Netherlands

Introduction

The Netherlands has a logic all of its own in Europe when it comes to crypto. Here, the gain you realise when you sell isn't taxed. Instead, crypto is part of your "Box 3" wealth (savings and investments), and each year you're taxed on a deemed return on the value of your assets, not on the actual gain. This module explains that mechanism simply, so you understand what truly matters: the value you hold as at 1 January. Important: this content is educational, not personalised tax advice — for your situation, consult a tax adviser (belastingadviseur).

The big difference: a wealth tax, not a capital-gains tax

In the Netherlands, selling crypto with a big gain doesn't trigger a capital-gains tax. It isn't the realised profit that's taxed: it's the value of your wealth. Crypto sits in "Box 3" (the savings-and-investments compartment of income tax).

In this logic, the state doesn't look at how much you made by selling. It looks at how much your assets are worth on a reference date — 1 January — and applies a tax on a deemed return on that value. Whether you sell or hold doesn't change the nature of the tax: what counts is what you own on the reference date.

Common belief

Like in France, I'll be taxed on my crypto profit at the moment I sell.

Actually : Not in the Netherlands. The country doesn't tax the realised gain: it taxes the value you hold on 1 January via a deemed return (Box 3). Selling or holding doesn't trigger a separate taxable event.

How Box 3 works: value on 1 January and a deemed return

Box 3 works by taking a snapshot of your wealth on the reference date of 1 January. Your assets are added up (savings, investments, crypto…), a tax-free wealth amount is deducted (the "heffingsvrij vermogen"), and only the net above that threshold is in scope.

On that net wealth, the tax authority applies a deemed return: an assumed return percentage, which it then taxes. So you aren't taxed on the gain you actually made, but on that theoretical return. As an educational estimate, the effective Box 3 burden on crypto comes to around 2.16% a year of its value — an indicative order of magnitude, not a guaranteed figure, because it depends on the year's deemed-return percentages and your total wealth.

Reference date: the value of your assets on 1 January.
Tax-free wealth (heffingsvrij vermogen): a threshold below which Box 3 isn't due.
Educational estimate: roughly 2.16% a year of the crypto value — indicative, not guaranteed.

Key insight

Holding period changes nothing

Selling early, selling late, or not selling at all doesn't create a separate taxable event. What determines the tax is the value of what you hold on 1 January — not when you sell.

A Box 3 under reform: why the figure shifts

The deemed-return system has been challenged, not least because it could tax an assumed return unrelated to what you actually earn. Box 3 is therefore under reform, and the deemed-return percentages change from one year to the next.

That's why the exact figures aren't set in stone: the tax-free wealth threshold and the deemed-return rates can change every year. Treat the estimate of roughly 2.16% a year as an indicative benchmark, not an immutable rule. For up-to-date amounts, the official source remains the Dutch tax authority, the Belastingdienst (belastingdienst.nl).

The deemed return shifts from one year to the next.
The tax-free wealth threshold can also change.
Official, up-to-date reference: the Belastingdienst (belastingdienst.nl).

How to declare, and the role of a French account

You declare your Box 3 wealth in your annual income-tax return (aangifte inkomstenbelasting) to the Belastingdienst. You report the value of your assets — including crypto — as it stood on 1 January. The idea is simple: keep a record of your portfolio's value on that reference date.

Deblock is regulated in France, not in the Netherlands. That doesn't change your duty: as a Dutch resident, it's up to you to declare your own Box 3 wealth to the Belastingdienst. The account doesn't declare on your behalf and removes no Dutch filing obligation.

When in doubt about your specific situation — amounts, the tax-free threshold, the treatment of an edge case — a tax adviser (belastingadviseur) remains the right call.

Declare Box 3 wealth in the aangifte inkomstenbelasting.
Report the value of your assets as at 1 January.
Dutch resident = you declare to the Belastingdienst yourself.

Key takeaways

What you should remember

01The Netherlands doesn't tax the gain on a sale: crypto is part of Box 3 wealth.
02Tax falls on a deemed return on the value as at 1 January — roughly 2.16%/year as an educational estimate.
03Holding period doesn't matter; a wealth allowance is exempt (heffingsvrij vermogen).
04Declare Box 3 to the Belastingdienst. Educational content, not tax advice — consult a belastingadviseur.

Simplified calculation