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Netherlands Plans Revision of Box 3 Tax on Unrealized Gains After Minister’s Reversal

The shift follows a Supreme Court ruling that forced a redesign of Box 3, leaving the 2028 rollout uncertain.

Overview

  • The finance minister said the bill cannot proceed as written and will be taken back to the drawing board with both chambers.
  • The proposal would tax annual changes in value, including unrealized gains on crypto, stocks, bonds and savings, at a 36% rate starting in 2028.
  • The House has approved the plan, but Senate objections and investor concerns over liquidity and fairness prompted the rethink.
  • Heinen has consulted his state secretary and left open whether targeted amendments or a full rewrite will be needed.
  • Under the draft, real estate and startup shares are largely taxed on sale while income such as rent and dividends remains taxed when received, with lawmakers having shortened the post‑implementation review window to three years.