Netherlands plans tax on unrealized BTC gains

TLDR

The Netherlands is advancing a wealth tax reform that would tax annual unrealized gains on Bitcoin and other liquid assets from 2028, but it is not law yet.

1. The proposal would shift Box 3 wealth tax to a capital-growth system that includes yearly value changes in crypto, with a headline 36% rate on taxable income.
2. Dutch residents holding Bitcoin could owe tax on gains even without selling, though losses can offset gains and be carried forward under the draft rules.
3. The bill still needs Senate approval, and details or political pushback could change the scope, timing, or even whether it is implemented.

Deep Dive

1. What The Dutch Proposal Actually Does

Reports describe a Box 3 overhaul that would treat annual changes in the value of liquid assets as taxable income from 1 January 2028, covering savings, securities and crypto holdings such as Bitcoin. A detailed breakdown notes a flat 36% rate on taxable Box 3 income, with deductions and loss rules affecting the effective burden for each taxpayer, and confirms that the bill has passed the House of Representatives but still awaits Senate approval, so it is not yet enacted law. Under the current system, crypto is already taxed via an assumed return on value as of 1 January, with a 6.00% notional return and 36% rate listed for 2026, so the reform mainly shifts from assumed to actual performance in Box 3 rather than creating crypto tax from scratch.

2. Impact On Bitcoin And Crypto Holders

For a Dutch resident, an increase in Bitcoins value over the year could create taxable income before selling, while a yearly decline would generate a negative return that can be carried forward under the proposal. That makes timing more about year-end valuations and portfolio swings than individual trade dates, which could push some investors to manage volatility or rebalance around tax dates. Real estate and certain startup shares would generally remain taxed on realized gains, so crypto stays grouped with other liquid financial assets rather than with property.

3. Market And Policy Signals To Watch

One analysis frames the change as a move toward mark to market taxation for digital assets and notes that markets may see it as mildly negative for Bitcoins long term perceived value. The key next step is Senate deliberation, where rates, loss rules, or the 2028 start date could be amended. Beyond the Netherlands, this proposal adds to a wider trend of governments experimenting with more granular crypto taxation, so other EU states may watch Box 3 outcomes when setting their own rules.

Conclusion

The Netherlands is moving toward taxing annual unrealized gains on Bitcoin as part of a broader wealth tax reform for liquid assets, but the plan is still only a proposal. For Dutch crypto users, the real change is a shift from assumed returns to actual year by year gains and losses, making tax outcomes more sensitive to portfolio volatility and future policy tweaks rather than just whether coins were sold.