Residents of Canada are required to reflect all sources of worldwide income on their personal tax returns.  For most individuals, who have investments with Canadian based banks and brokerages, this is fairly straightforward as you will receive the relevant tax slips, usually by March 31st of the year following the end of the calendar year i.e. for the 2023 tax year, you should receive all investment related tax forms and slips by March 31st, 2024.  It is important, if you have investment income in non registered investments (i.e. not TFSA, RRSPs or FHSAs), to ensure that you have received all tax documents and report them.  Failure to report income can result in penalties by Revenue Canada and Revenue Quebec, which is never great, particularly when it can be easily avoided.  It should be noted that since most tax documentation is submitted by the issuer to Revenue Canada (CRA) and Revenue Quebec (RQ) electronically, they usually have a record of the various types of investment income for each taxpayer and can easily identify any missing information.