Leleux Associated Brokers has formally requested that Belgian authorities postpone the implementation of a new capital gains tax until January 1, 2027.
The brokerage firm argues that the current timeline creates significant administrative and calculation difficulties for market participants.
The call for a delay comes as the industry grapples with the retroactive nature of the legislation.
Although the law was only passed in April 2026, with executive decrees published in late May and application circulars issued in July, the tax applies to transactions dating back to January 1, 2026.
This compressed timeline has left brokers and investors struggling to reconcile historical data with new reporting requirements.
According to La Libre Belgique, the brokerage firm highlighted the operational burden imposed by the rapid rollout.