- According to the Dutch Parliament, the Wet Work Tax Box 3 reform is expected to take effect on January 1, 2028.
- A flat tax rate of 36% will apply to net annual returns exceeding the €1,800 threshold per person.
- Losses can be carried forward to offset future gains.
The Netherlands is preparing to change how investors are taxed, a shift that could directly affect holders of Bitcoin and other crypto assets.
Beginning in 2028, the country plans to tax unrealized gains, meaning investors may owe taxes even if they have not sold their holdings.
According to a post shared by Crypto Rover, the Netherlands is moving toward taxing unrealized Bitcoin gains, renewing attention on how the government treats cryptocurrencies under mainstream investment rules.
The policy is expected to cover a wide range of assets, including Bitcoin, other cryptocurrencies, stocks, bonds, and similar investments.
For many investors, the key issue is that taxes would be triggered by changes in value over time rather than by selling and locking in profits.
That makes the reform particularly significant for crypto holders, who often experience large price swings and hold assets for long periods.
Netherlands Plans to Overhaul Box 3 Wealth Tax
According to the Dutch Parliament, a new Box 3 tax regime—referred to as the Wet Work Tax Box 3—will be introduced as of January 1, 2028.
The idea is to tax investors based on their actual annual returns rather than on a government-set assumed return.
Under the planned approach, authorities will compare the value of an individual’s assets at the beginning and end of the year. Any income earned during that period will be included in the calculation.
That means investors could be taxed on both realized profits and gains that exist only on paper.
The tax will apply to Bitcoin, other cryptocurrencies, and traditional investment products.
The reform aims to treat different asset classes equally and apply a consistent method across modern investment portfolios.
Why the Netherlands Is Changing Its Tax System
The proposed change follows court rulings that found the old Box 3 system unfair.
Under the previous framework, investors were taxed based on an assumed return, even when their actual holdings did not meet that assumption.
Lawmakers argue the new structure is more accurate because it reflects real changes in asset values rather than estimates that may not match actual results.
Supporters say this change improves fairness, especially for investors whose returns were overestimated under the assumed-return method.
The reform also reflects how investment behavior has evolved over the years.
Many households now hold a mix of traditional assets and cryptocurrencies, and the government appears to be moving toward applying consistent rules across both categories.
How Will Unrealized Gains Be Taxed Annually?
Under the new rules, the government will calculate an individual’s annual investment result by comparing asset values at the start and end of the year, plus any income earned during that period.
A flat tax rate of 36% will apply to net annual returns that exceed the €1,800 threshold per person.
In short, taxation will be linked to annual performance rather than trading activity.
This means investors may owe taxes if their portfolio value rises by year-end, even if they did not sell any assets or realize cash from those gains.
If an investor records a loss, that loss can be carried forward to offset future gains.
This provides some protection in years with negative returns, although concerns remain about timing mismatches between paper gains and actual cash flow.
Potential Impact on Bitcoin and Cryptocurrency Holders
The main challenge for crypto investors is volatility. Bitcoin and other digital assets can rise sharply over short periods and then fall just as quickly.
Even when investors have not sold any cryptocurrency and cannot access cash from those gains, rising year-end valuations could still create a tax liability.
Critics warn this could cause liquidity pressure, especially for long-term holders who do not want to sell Bitcoin to pay taxes.
There are also concerns that if compliance costs are high or the system is difficult to administer, some investors and crypto businesses might consider relocating.
As the Box 3 reform is scheduled to take effect in 2028, the Netherlands is preparing for a major shift in investor taxation. Cryptocurrency holders may soon face annual tax calculations tied to market movements rather than to their decision to sell.