Do you mean the Canadian banks are requesting for your SSN because you used US phone number? Because when you opened your bank accounts in US they would have asked for SSN anyway right?Hey guys. I was on H1b, moved to Canada in April 2021. I was resident for tax purposes in 2020. I am assuming I am resident for tax purposed in US for 2021 as I had significant presence in US for last 3 years. Now, in Canada, Am I a resident or non resident for tax purposes? I have canadian income now. No US income anymore. I am getting all this bank requests for my SSN from US because I added my US phone number to bank details(dumb mistake).