Working Families Childcare Access Act of 2021 or the WFCA Act of 2021 This bill allows certain additional expenses in a dependent care flexible spending arrangement (FSA), specifically qualified sports, tutoring, and music or art expenses. It also increases the eligibility age for dependent care benefits to 15, allows a carry forward of unused benefits to the next plan year, and increases to $15,000 the maximum amount of dependent care benefits excludible from employee gross income.