This article is applicable if you are a BUX customer who was taxed on assets in the Netherlands and held a BUX account between 2020 and 2024. Take into account that you are only taxed above a certain threshold, which as of 2025, stands at €57,684, meaning you were not taxed if your total assets (not just your assets at BUX, but your assets overall) did not exceed this amount.
In June 2024, the Supreme Court ruled that the Dutch Tax Authority (Belastingdienst) must tax the actual return on your assets if it is lower than the previously assumed deemed return of 4%. This means that if the actual return on your assets (overall assets, not just assets at BUX), falling under the "box 3" classification, was below 4% in a given year, you may be eligible for a refund. In case you suspect this applies to you, you will need to provide proof of this to the tax authorities.
To claim this refund, you need to complete the OWR form (Opgaaf Werkelijk Rendement), which is available on the Belastingdienst website. You only need to fill out this form if you anticipate receiving a refund. It's important to note that if your actual return was higher than the previously calculated deemed return, you will not be required to pay additional tax.
You can find the OWR form here: https://www.belastingdienst.nl/wps/wcm/connect/nl/box-3/content/formulier-opgaaf-werkelijk-rendement.
If you are a BUX customer who was taxed in the Netherlands and held a BUX account between 2020 and 2024,we can provide the necessary information from your BUX account to assist you in completing the OWR form for the relevant years. Please just reach out to our support team.