Private investors who want to hold crypto face a practical choice: keep the coins themselves, in wallets under their own management, or participate in an investment fund, where a participation is a right to a proportional part of the fund’s assets. Both routes end up in the Dutch income tax return, yet the road towards it differs. A question that comes up regularly is whether the tax authorities treat the two options differently. The answer is remarkably sober: box 3 sets no separate rate for crypto as against a fund participation. The real differences lie in valuation, administration, custody and the tax structure of the fund.
Both sit in box 3
Coins you hold yourself are declared as an asset in box 3, the Dutch tax box for savings and investments. You report their market value on the reference date of 1 January. A fund participation falls in box 3 as well, as an investment under other assets (overige bezittingen). Shares, bonds and comparable investments sit in that same category. For tax purposes, both routes therefore land in the same place.
That also means both routes sit in the same category of investments and other assets for the deemed-return calculation, with the same box 3 rate and the same tax-free allowance. How that levy is calculated, with the current percentages and a worked example, is set out in Crypto in box 3; a broader overview is available in Crypto and tax in the Netherlands. For the private investor, both routes in principle fall under the same box 3 mechanism; the eventual tax outcome can, however, also depend on the structure and tax treatment of the fund.
Where the differences actually lie
The distinction is largely practical. Anyone holding coins directly establishes the value of every wallet and every platform on 1 January and keeps those records personally: prices per coin, balances per provider, year after year. That demands precision, certainly when positions are spread across several platforms. With a fund participation, one figure suffices: the participation value on 1 January, supplied by the fund administration. A single number keeps the tax return orderly.
Custody differs as well. Hold Bitcoin or Ethereum yourself and you also carry the responsibility for custody: the safekeeping of the coins, including keys and access. In a fund, safekeeping is arranged within the fund structure; the precise arrangements are described in the fund documentation.
The Dutch rebuttal scheme (tegenbewijsregeling) works within the same mechanism on both routes. If your actual return comes out below the return the tax authorities apply by default, you can report it, after which they use whichever figure is more favourable to you. That actual return counts both income and changes in the value of your assets. For crypto, the tax authorities ask for the value on 1 January and on 31 December, among other things, along with the record of purchases and sales. The scheme applies for as long as the current system stands: the government is working towards a levy based on actual return, with 1 January 2028 as the intended start date, but that legislation has not been finalised.
Participating through a bv
For investors who hold their assets in a Dutch bv (private limited company), the arithmetic changes. A bv falls outside the box 3 deemed-return system and is taxed on its taxable profit; investment gains and losses can form part of that. The corporate income tax rate, in both 2025 and 2026, is 19% on taxable amounts up to and including 200,000 euro and 25.8% on the excess. The choice between investing through a bv and investing privately follows its own logic; we examine it in Investing in crypto through your bv or privately.
The tax position of the fund itself
Beyond the levy at investor level, there is a second layer: how the fund itself is treated for tax purposes. That varies by fund structure and tax classification. Some structures are fiscally transparent (taxation then runs through the participants themselves), while others may be independently liable to tax. Which treatment applies to a specific fund belongs in the fund documentation and in a conversation with your own adviser; general statements fall short here rather quickly.
Documentation first
For completeness: participation in the Callisto Capital fund is possible from 100,000 euro. The fund therefore addresses a limited group of investors rather than the broad retail market. Anyone considering participation should read the fund documentation first and discuss their personal situation with a tax adviser; a general comparison is no substitute for that tailored view.
This article is for information only and does not constitute tax or investment advice.
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About this article
This article is intended as general information and does not constitute tax, legal or investment advice. No rights can be derived from its contents. Laws, regulations and case law may change after publication, and the tax treatment depends on individual facts and circumstances. Consult a tax adviser or the Dutch Tax Administration for your personal situation. Last updated on 31 August 2026.
Callisto Capital is registered in the Netherlands as an AIFMD-light manager and is not under the ongoing supervision of the AFM.
