Form T2091 does not appear to be available with TurboTax Standard.
The instructions on Form T2091 say " If you are filing electronically, keep this form in case we ask to see it later. If you are filing a paper return, you must complete, sign, and attach this form to your return."
If we are filing our T1 electronically using net-file, does this mean we only have to complete the form separately (using the form on CRA's website) and report the gain (if any) on Line 158 of T1 Schedule 3, then keep the completed Form T2091 in case CRA asks for it later, but that we do NOT need to submit it in paper to CRA separately?
You will keep the form but not required to send in. If CRA contacts you and requires to view it, then you will need to send it in.
If you are completing your return electronically you will complete the form on the TurboTax software
If you are in TurboTax Online, click the Find icon and search for “prin”. Select Principal Residences from the list and click Go. This you will complete and it is the T2091.