Crypto and taxes in the Netherlands: a practical guide for 2026

This article describes the tax rules in the Netherlands. The rules in your own country will differ.

The big change: from a deemed return to actual return

The Netherlands has gradually moved to a box 3 system that is closer to the actual return. For crypto this means that both gains in value and rewards received matter more than under the old deemed-return system. The Dutch tax authority (Belastingdienst) expects cleaner record-keeping than before.

What falls under box 3?

Virtually all crypto holdings, measured on the reference date of 1 January. Think of:

• Bitcoin, Ethereum and other coins
• Stablecoins
• Balances on exchanges
• DeFi positions (lending, liquidity provider tokens)
• NFTs with a demonstrable market value

When does it suddenly become box 1?

If your activities look more like a business or labor, the Belastingdienst may place your income in box 1. Examples:

• Professional day trading with borrowed capital.
• Mining on an industrial scale.
• Paid advice or development in crypto through your own practice.

For most private individuals who stake or trade occasionally, it stays in box 3.

Staking and mining

Rewards received increase the value of your holdings in box 3 on the reference date. For mining, the Belastingdienst sometimes distinguishes between hobby and business activity. Rule of thumb: the larger the investment and the more structural the income, the higher the chance of a different regime.

NFTs

NFTs without a clear market value are hard to value. The practical line: if there are recent, comparable sales, use those as a reference price. Document how you arrive at a value.

Five tips for your records

1. Export a full transaction overview from every exchange and wallet at least once a year.
2. Use a tool such as Koinly, CoinTracking or a structured spreadsheet.
3. Document the source of every wallet and every address that is yours.
4. Keep screenshots of reference-date values for less liquid tokens.
5. When in doubt, engage a tax adviser with demonstrable crypto experience.

Common mistakes

• Reporting only the final value and ignoring trading within the year.
• ‘Forgetting’ self-custody wallets because they are not at an exchange.
• Not including airdrops and forks in the valuation.
• Reporting DeFi positions below their nominal value because they are ‘temporarily locked’.

Closing

The rules are not getting simpler, but they are getting fairer. Those who keep their records in order avoid surprises and can calmly enjoy the upside without a knot in their stomach during the Dutch tax season.

This article is informational and not tax advice, and it describes the Dutch situation only. For your specific situation, consult a tax adviser.