How do I fill out the personal information section of the TD1 tax forms?

You must provide a valid off-campus permanent address to which a T4 can be sent for regulatory tax purposes. Otherwise, the T4 or T4A slip may not be sent to the correct address, or the slip will not be mailed at all until a valid address is provided.

Also, it is mandatory that you include your Social Insurance Number. If you do not have a SIN, you will need to get one from a Service Canada Office.