A flexible spending account (or FSA) is a benefit many companies offer, and it can be really helpful if you have any medical expenses, small or large. Tax-free money (yes, it’s taken out pre-tax) is set aside from your check each pay period to spend on health-related expenses throughout the year. These days, more retailers are creating FSA-eligible hubs on their sites — Amazon launched its dedicated FSA/HSA store in 2017, so you can get your much-needed items with free and quick delivery if you’