Yes. HSA money is not "use-it-or-lose-it," unlike flexible spending accounts (FSAs), and your entire HSA balance carries over from year to year, forever. In general, HSAs cover a broader variety of qualified medical expenses than FSAs.2 Also, FSAs are generally sponsored by your employer, while your Fidelity HSA is owned by you. That means your HSA is always yours, even if you change employers or move to a different state.