If you separated or divorced in 2018, the CRA will
still require your spouse’s information.
If you separated or divorced before 2018, you say
"No" to the question "Did you separate from your spouse/partner
in 2018?".
To make changes, select “Marital Status” from
under “Setting Up/Introduction” in the left side menu. Choose the correct
options and click the “Continue” button to save your information.
If you can’t see “Setting Up” (or there are locks
next to everything), use the “Back” button at the bottom of the page to go
backwards through the interview until you get to the “What's your marital
status?” page.
I’m separated or divorced. Why am I being asked
for info about my former spouse/partner? https://turbotax.community.intuit.ca/replies/3425400
What to do if you don’t know your (ex)spouse’s
income? https://turbotax.community.intuit.ca/replies/2647950