Let me explain the rules regarding taxes and BLOX. Please keep in mind that we are not tax advisors, and for comprehensive advice, you can always visit the website of the Dutch or Flemish Tax Authority.
In the Netherlands
Crypto is usually classified under Box 3 (assets). This means you must add it to your total assets, such as savings and stocks.
In 2025, you will have to pay taxes if your total assets exceed €57,684 (€115,386 for tax partners).
Whether you need to pay taxes on your crypto depends on your situation. For example, if on January 1st, your savings account holds €10,000, you have no debts, and your crypto is worth €5,000, you remain below the threshold and do not need to pay taxes. However, if your total assets exceed the threshold, you will have to pay taxes.
There are also exceptions, such as if you mine crypto yourself or if you trade crypto as an entrepreneur. For more information on crypto and taxes, check out 'this page'!
In Belgium
The rules for cryptocurrency and taxes are different. You don't have to pay taxes when you own cryptocurrency. The Federal Public Service of Finance (FPS) only comes into play when you convert your bitcoins to euros.
In that case, you may or may not have to pay taxes. The Advance Decision Service (ADS) states, "Investments in virtual currencies are usually speculative, and the income derived from them constitutes various incomes."
Please note the word "usually" in this sentence. It's unclear when you must pay taxes and when you don't. The FPS advises you to contact the ADS for personalized advice. You can find their contact information 'here'.