Who Pays for Taxing Real Gains?

The Netherlands is moving towards a new box 3 system. The unresolved question is who pays for the change.

The Dutch government wants to tax more investment gains when they are realised. That may be easier to defend than taxing a rise in value before an asset is sold, but it can delay tax receipts. A proposed reduction in the tax-free annual return would help cover the cost. Parliament has pushed back because it would also affect people with modest savings.

Five questions reveal where a workable agreement might be found.

🟦 Why does changing the tax create a budget gap?

The existing box 3 bill combines annual taxation of some gains with taxation upon realisation for assets such as property. The cabinet’s proposed amendment would extend the latter approach. When tax is paid later, the government needs a credible way to manage the intervening loss of revenue. The precise cost depends on the final design and its assessment.

🟦 How much protection should small savers receive?

The cabinet proposed reducing the tax-free annual return from €1,800 to €1,000, a change estimated to raise €540 million on a structural basis. According to a motion led by ChristenUnie MP Pieter Grinwis, it would bring around 850,000 additional people into the new system. The motion passed, with D66 and CDA supporting it and the VVD voting against. Protecting modest returns has political support; replacing the expected revenue remains the harder part.

🟦 Which other tax advantages are parties willing to change?

Grinwis’s motion points to paper gifts: family transfers recorded as a debt, with interest paid to the recipient. Updating the prescribed interest rate could limit their advantage under gift and inheritance tax. But it cannot simply be entered as a €540 million solution. An earlier government estimate put the revenue from that specific change at €18 million in 2027, rising gradually to €51 million a year in the long run. The measure needs a fresh calculation within any final package.

🟦 Could the government find the money elsewhere?

Yes, but the type of money matters. The VVD has asked the cabinet to examine a lower box 2 rate; ChristenUnie and SGP MPs have also sought an assessment of whether a temporary change would encourage earlier dividend payments. That could bring tax receipts forward without necessarily increasing them permanently. Meanwhile, PRO — formerly GroenLinks-PvdA — and Volt want an alternative package within the wider taxation of wealth that does not fall on small savers. Moving costs across the budget is a political choice, but a temporary receipt cannot automatically fund a lasting shortfall.

🟦 What would make a compromise credible?

The cabinet could put each proposed measure in one public table: its revenue in 2027, its revenue after the new system starts, its long-term effect, and its impact on taxpayers and administration. That would give parties room to combine proposals without concealing what each one achieves. It would also let both chambers judge whether the legislation and its funding can survive together.

The Signal

There is room for a box 3 agreement. Parliament has identified people it wants to protect and several places to look for funding. The test now is whether the cabinet can turn those preferences into a costed package that distinguishes tax collected earlier from revenue raised permanently.

Image credit
AI-generated editorial illustration for Altair Media.

Caption
A balance between protecting modest savers and funding the shift towards taxing realised investment gains.