The psychological well-being of family caregivers is influenced by their relations with care receivers, and whether they have choice in becoming a caregiver. Limited study has explored the interaction effect of caregiver-receiver relations and caregiving choice on caregivers' psychological well-being. This study examines whether the caregiver's perceived choice moderates the association between caregiver-receiver relation and psychological well-being. Using population-based data from the 2012 Canada General Social Survey - Caregiving and Care Receiving (n = 5,285), this study applies regression and ANCOVA analyses. Results show family caregivers for spouses and children report significantly worse psychological well-being, whereas having choice to become a caregiver is associated with better psychological well-being. There was a significant moderation effect of caregiving choice on the association between caregiver-receiver relation and psychological well-being. Findings suggest that more services should be targeted for family caregivers without choice for caregiving as well as those who provide care for their children.