TLDR
The Netherlands is working on a new wealth tax that would include unrealized gains on assets like Bitcoin from 2028, but the proposal is not final and may be significantly revised.
- Lawmakers approved a Box 3 overhaul that taxes actual yearly returns, including unrealized crypto gains, yet it still needs Senate approval and the finance minister wants changes.
- Under the draft, Bitcoin and other Box 3 assets could face up to 36% tax on annual gains, with a modest tax-free allowance and no refunds for loss years, raising cash-flow risks.
- Political signals suggest a later move toward a classic capital gains model that taxes only on sale, so investors should watch amendments and 2028 legislative milestones closely.
Deep Dive
1. What The Netherlands Has Proposed
A Dutch proposal called the Actual Return on Box 3 Act would replace the current notional-return system with a tax on actual yearly returns, including unrealized gains on assets such as crypto, from 2028 onward.
According to a detailed Dutch policy explainer on the proposed Box 3 overhaul, the bill passed the House of Representatives but still requires Senate approval. It explicitly covers savings, stocks, crypto and second homes, so it is not Bitcoin-specific.
Crucially, Finance Minister Eelco Heinen has said the bill cannot proceed in its current form and intends to amend how unrealized gains are taxed, which means the current design is already under political pressure.
There is a real policy push toward taxing annual wealth returns, but the exact treatment of unrealized crypto gains is still in flux, not a done deal.
2. How It Would Hit BTC Holders
The draft would tax actual annual returns in Box 3 at a top rate around 36%, with a 1,800 tax-free allowance and indefinite loss carryforwards, but loss years would not generate tax refunds.
That means a Dutch Bitcoin holder could owe tax on a year-end gain that disappears before the tax payment deadline, creating liquidity risk if they do not sell coins to fund the bill. The same risk applies to other volatile assets like equities, but crypto volatility amplifies it.
Holding BTC long term without realizing gains could still trigger yearly tax bills, so volatility and timing become as important as long-term conviction for Dutch residents.
3. What To Watch Between Now And 2028
The same Box 3 analysis notes that major parties (D66, VVD, CDA and others) have signaled support for eventually moving to a capital gains model that taxes assets only when sold, with draft legislation expected by Budget Day 2028.
If that capital gains model replaces or softens the current unrealized-gain design, crypto holders could end up taxed mainly on realized disposals rather than yearly mark-to-market swings. Conversely, if the Senate passes a tough version, it could encourage some investors to shift savings or even residency to more crypto-friendly jurisdictions.
The key signal is whether the Senate and finance ministry converge on an interim or permanent mark-to-market system, or pivot fully to a realized-gains regime by 2028.
Conclusion
The Netherlands is clearly moving away from notional wealth taxation toward a more market-based system, and in its current form that would capture unrealized Bitcoin gains. However, the legislation is unfinished, politically contested and explicitly flagged for revision, especially on unrealized income. For crypto users in or exposed to the Dutch system, the practical impact will depend on how the Senate, the finance ministry and the promised 2028 capital gains proposals reshape the treatment of digital assets over the next few years.
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