You should inform any Canadian payers (banks, mutual fund companies, employers, etc) that you will be a non-resident for tax purposes, and let them know your new country of residence. This way, they will deduct the correct withholding taxes, where applicable.
If you are a member of Actra, you should also inform them that your residency status has changed so that the proper withholdings are taken on residuals/royalties. Actors who return to Canada to work must present themselves a non-resident, as opposed to a local.
If you are receiving any benefits such as Child Tax Benefits, Universal Childcare Benefit, or GST/HST credits, you should inform CRA (1 800 959 8281) you are leaving Canada so that they will stop payments. Otherwise, you will have to repay them at a later date, with interest.
If you have an outstanding balance under the home buyers or life long learning plan, you have 60 days to repay those amounts. Otherwise, the remaining balances owing must be included as income on your final Canadian return.
In the year that you leave Canada, you will file a Canadian tax return indicating the departure date. You will report world income for the part of the year you were a resident of Canada. After your departure date, you only pay Canadian income tax on Canadian source income.
If you owned property with a fair market value of over $25,000, you must complete Form T1161 (List of Properties by an Emigrant of Canada). Excluded from the calculation are cash, pension plans and other retirement plans, RESPs, personal effects, real estate etc. You may also need to file form T1243, Deemed Disposition of Property by an Emigrant of Canada.
As a non-resident for tax purposes, you cannot contribute to a Tax Free Savings account; CRA regularly imposes punitive penalties for TFSA contributions made by non-residents of Canada.