About GST and HST in Canada, the problem of tax refund!

Sin card numbers issued by Canada to foreigners all start with 9, regardless of province.

Generally speaking, CRA will not send letters to individuals asking for tax returns, except for a few tycoons. Your current situation shows that your immigration is under trial, so they need to investigate your income in Canada. This is a good thing.

Your tax return has nothing to do with whether you are an immigrant or not. Even if you are an international student and have no job, CRA will provide a temporary Sin card number (but no physical card) for your tax return. So, you don't have to worry about whether you can immigrate successfully. Paying taxes is to declare your income and tax payment in the past year. However, the time for individual tax returns has passed. If CRA thinks that you need to pay taxes after providing the information such as the crime number and T4 as required (that is, you earned more last year), you are likely to be fined. At this point, you can do the math yourself when you file your tax returns. Unless you earned a lot last year, the average working class won't have this problem. If this problem arises, you must spend more money to find a good taxpayer to help you, and if necessary, provide an explanation letter to explain why you didn't file your tax returns in time. Although explained, you will still be fined, but the harm to your immigration review will be less.