After selecting the autofill my tax return, the system automatically filled my T5008 ( Statement of securities transactions) information into Investment and interest income and expenses section. After that, I needed to add other relevant details like book values or outlays etc. which I completed. At the end of the system calculated that I owe like $200,000 to CRA which is not true. Ufile just calculating my transactions as my profits... it seems that it is not doing the actual calculations (realized gains: proceeds- cost&expenses ). Why? I know if I will fill my information manually in capital gains/losses section (Schedule 3), there will not be any problem. But why it is not doing the right output of tax return when autofill option is used?