Capital gain gross 45000 Losses get applied before 50% discount Firstly claim 30000 loss from previous years 15,000 left Then 7000 loss deducted 8000 left (this is from the 20k, you have to deduct losses if you can but are allowed to choose which capital gain the loss applies to first) 50% Discount on 8000 Therefore, 4000 taxable left. 1)45000 2)4000 3)0