When FSA funds expire, and how the deadline worksA health FSA is an employer-sponsored benefit that lets you set aside part of each paycheck—up to $3,300 for 2025—into an account for out-of-pocket medical costs. Think of it as a single-year health nest egg you can use for deductibles, copayments, prescriptions, and a range of eligible medical expenses. Unlike Health Savings Accounts (HSAs), FSAs require you to spend your balance by December 31 or you forfeit the funds. Stelo Glucose Biosensor & App by Dexcom Dexcom See ItPart of the promise of tech-infused health care is more personalized care. If you still have room, look at eligible health tech, support gear, or other durable items that fit your needs.