If the property was your principal residence prior to the change of use, you don’t have to pay tax on any accrued gain. In the past, it was the Canada Revenue Agency (CRA)’s administrative policy that when you disposed of your principal residence, you didn’t have to report the sale on your tax return if you were eligible for the full PRE. Since 2016, you must report the sale and designation of principal residence on Schedule 3, Capital Gains of your return to be eligible for the PRE. On Schedule 3, you’ll need to report basic information, such as the date of acquisition of the residence, a description of the property and the proceeds of disposition. For sales in 2017 and later years, completion of CRA Form T2091 (IND), Designation of a Property as a Principal Residence by an Individual (Other Than a Personal Trust) will also be required.
The good news is, however, when you change your principal residence to a rental property, you may be able to make a special tax election to not be considered as having started to use your principal residence as a rental property and thus you can avoid reporting this gain in the year of the change in use.
If you make this election, however, you can’t claim any tax depreciation — known as capital cost allowance (CCA) — on the property, and you still need to report the net rental income you earn each year.
While your election is in effect, you can designate the property as your principal residence for up to 4 years, even if you don’t use your property as your principal residence; however, you can only do this if you don’t designate any other property, such as a vacation home or cottage, as your principal residence during this period of time.
If you make this election and then move back into your residence, there are no immediate tax consequences as a result of moving back.