We suggest you to visit this link from CRA.
As per CRA, they are working diligently to update their systems to reflect the currently enacted capital gains inclusion rate of one-half. However, this update may not be completed when online filing becomes available on February 24, 2025.
This means, all forms related to, can have some wrong calculations. Some of these forms are completely locked and you won't be able to NETFILE until they are finalized. You can refer to this article to have more information about locked forms. We're working hard to finalize these forms to align ourselves with CRA requirements.
We apologize for this inconvenient and suggest you to try filing your return later.
Thank you for choosing TurboTax.