Hi,
I have a capital loss for the year 2021 and would like to offset the capital gain for the prior three years (year 2018-2020) and not sure how to do it. I tried to enter into capital gain history but the tax calculation result is the same as without it, which seems not right. I have read some previous comments from the forum about T1A, and I am wondering if I will have to complete the T1A form manually and mail it out, and file my tax online or I will have to submit both the T1A and the tax filing by mail. Hope some one can help me with this.
Thanks in advance for the help and advices