Hi all. I understand that a citizen/PR wants to sponsor a parent/grandparent next year, in 2017, will need to submit tax assessment forms for years 2013, 2014, and 2015. I also understand that the applicant can combine his/her income with their common-law partner to meet the minimum income requirement. My question is, what if the applicant and his/her partner officially got considered as "common law partners" (12 continuous months of living together as per Canada Revenue Agency's definition) only in 2015? If the applicant did not meet the income requirement for 2013 and 2014, can he/she still combine the income with their partner even if they weren't officially considered "common law partners" in those years?