That's right, M Orange, you must use all the FSA money in the calendar year it accrues. Now that I am retired from my "real" job and consult parttime, I pay my own high deductible health insurance plan ( gulp-- age matters) and contribute to the HSA. I have massive tIRA $; if you do or any appreciated stock, you can do a one time only payment of your HSA from those accounts and not pay tax on it. You must follow very specific rules, but I did it last year. Some HSA companies don't even seem to know about this, or know all the rules when you call them, so read the IRS rule first before. You don't, for instance, have until April 15 of the year following to make the contribution as you do otherwise.