Hello...
How many year is the minimum validity of your passport if applying for spousal sponsorship??
Thank you...
Your current passport is valid until the expiration date on the passport and independent of your spousal sponsorship application........if your passport expires, you will have to renew your passport.......your PR visa will not be issued on an expired passport.
If your spousal sponsorship is approved, you will receive PR visa and COPR..........the validity of your COPR is the earliest of your passport expiration date and the 1 year anniversary of your medical exam (e.g., if you did medical on Oct 12th 2018, 1 year anniversary will be Oct 12th 2019).