I have a T3 and value in Box 21 for capital gains. I enter the slip information once. I ask it to split it with my spouse. The split seems to work OK with the exception that it is not handling the split properly on the Schedule 3. I see the full amount allocated to me and then it does the calculation on that amount. On my Spouse's Schedule 3 there is no values. When I go to netfile, Turbotax complains that I have a capital gains for my spouse but Schedule 3 is not filled in correctly.
