- The Wet werkelijk rendement Box 3 is scheduled by the Dutch Parliament to take effect on January 1, 2028.
- A flat tax rate of 36% applies to positive net returns above a threshold of €1,800 per person.
- Losses can be carried forward to offset future gains.
The Netherlands is preparing to change how investor assets are taxed, a shift that could directly affect people who hold Bitcoin and other crypto assets.
Beginning in 2028, the country plans to tax unrealized gains, which means investors may owe taxes even when they have not sold their holdings.
According to a post by Crypto Rover, the Netherlands is moving toward taxing unrealized Bitcoin gains, drawing attention to how governments might treat crypto under standard investment tax rules.
The policy is expected to cover a broad range of assets, including Bitcoin, other cryptocurrencies, stocks, bonds, and similar investments.
For many investors the central issue is that taxes would be triggered by changes in value over time rather than by sales that realize gains.
That makes the reform particularly relevant to crypto holders, who often face large price swings and long holding periods.
Netherlands plans overhaul of wealth tax in Box 3
According to the Dutch Parliament, the Netherlands will introduce a new tax regime called Wet werkelijk rendement Box 3 starting on January 1, 2028.
The idea is to tax investors based on the actual returns they achieve each year rather than on government-assumed returns.
Under the proposed approach, authorities would compare the value of a person’s assets at the beginning and end of the year. Any income generated during that period would also be included in the calculation.
That means investors could be taxed on both realized gains and unrealized gains that exist only on paper.
The tax will apply to Bitcoin, other cryptocurrencies, and traditional investment products.
The reform is designed to treat different asset classes consistently and to apply a unified method across a modern portfolio.
Why the Netherlands is changing its tax model
The proposed change follows a court ruling that found the old Box 3 system unfair.
Under the prior framework, investors were taxed based on assumed returns even when their actual holdings did not match those assumptions.
Lawmakers argue the new structure is more accurate because it is based on the actual change in asset values rather than on an estimate that may not reflect real outcomes.
Proponents say the change improves fairness, particularly for investors whose returns were historically overstated by the assumed-yield method.
The planned system also reflects how investment behavior has evolved over time.
Many households now hold a mix of traditional assets and crypto, and the government appears to be moving toward rules that apply consistently across both categories.
How would unrealized gains be taxed each year?
Under the new rules, the government would compute an individual’s annual investment result by comparing assets at the start and end of the year and by including income earned during that period.
A flat tax rate of 36% would apply to positive net returns exceeding an annual allowance of €1,800 per person.
Put simply, the tax would be tied to yearly performance rather than to transactions.
That means an investor could owe taxes when their portfolio increases in value, even if they sell nothing and receive no cash from those holdings.
If an investor records a loss, that loss can be carried forward and used to offset future gains.
This provides some protection for investors in down years, though the timing mismatch between paper gains and actual cash flow will remain a concern for some.
What the reform could mean for Bitcoin and crypto holders
Volatility is the biggest challenge for crypto investors. Bitcoin and other digital assets can surge quickly and then fall just as fast.
A price increase at year-end could create a tax liability even if the investor did not sell any cryptocurrency and has no cash available from those gains.
Critics warn this could create liquidity pressure, especially for long-term holders who do not want to sell Bitcoin merely to cover tax bills.
Some fear the rules could prompt investors and crypto firms to relocate if the system proves too costly or difficult to manage.
With the Box 3 reform scheduled for 2028, the Netherlands is positioning itself for a significant change in investor taxation. Crypto holders may soon face annual tax calculations tied to market movements rather than to their decision to sell.