Yes, you can purchase a treadmill with your FSA (Flexible Spending Account). You can use your FSA to pay for the purchase of a treadmill, as well as other eligible medical expenses. Eligible medical expenses include, but are not limited to: doctor visits, hospital stays, surgeries, prescription medications, and more. If you have questions about whether or not a particular expense is eligible under your FSA plan, you should contact your FSA plan administrator.