How do I claim an eligible dependant (equivalent to a spouse)?
In the Schedule 5 for that dependant, check both boxes of “Live with tax payer” and “Eligible dependant”. You can only claim an eligible amount if your marital status is not married or living common-law at the end of the year, or if you are married or living common-law at the end of the year but you indicate that you have changed your marital status during the year on the Family Information page.