How much does Flex charge the resident? April 16, 2021 02:40 Updated Flex charges a flat monthly membership fee of $19.99. There are never any late fees, hidden fees, or penalties associated with Flex. Related articles What are the resident qualifications? Does Flex affect a resident’s credit score? When does a resident need to have signed up by to have their rent covered? What happens if a resident doesn’t pay Flex back? Will Flex have access to a resident’s personal banking information? Comments 0 comments Please sign in to leave a comment.