How to file income tax without knowing Amoutn A (RRSP Contribution Room)
I have a question for personal income filing. My step-father has not done his income tax for 15 years. I decided to help him and start it with filing the most recent 2019 years' tax only at this time. His company contributed RRSP for him in 2019. Since he hasn't filing income tax for so long, so we won't know Amount A (contribution room for RRSP for past years). How do we file 2019 income tax without knowing his accumulated RRSP contribution room (Amount A)? Thanks a lot!