Does Flex charge any late fees for missed payments? December 18, 2020 21:15 Updated No! Flex doesn’t charge any late fees or additional fees for missed payments. You will need to make up that payment during the month in order to stay on Flex for the next month. Related articles I missed a payment! Can I still use Flex? I don't have funds for my first payment What is the last day Flex can cover my rent? Can I schedule my 2nd payment on the last day of the month? Can I split my monthly payments into smaller payments? Comments 0 comments Please sign in to leave a comment.