One of the greatest benefits of HSAs is they have three tax advantages. HSA contributions are tax-deductible, the growth on invested contributions are tax-free, and the money can be used on qualified medical expenses tax-free. This makes HSAs the most tax-advantaged investment option for health-related expenses and retirement. Lastly, the funds in your HSA are always yours. Unlike a flexible spending account (FSA), unused money in your HSA isn’t forfeited at the end of the year; it continues to grow tax-deferred forever.
We think that is pretty awesome.