What happens if I swipe my card for an eligible FSA expense, but I want it to come from my health savings account?

The debit card will take available funds from your eligible FSA benefit first if the provider/merchant has the item/service on their debit card machine coded correctly. Keep in mind the date of service you are swiping your card for. If your expense is not eligible for the FSA benefit or was rendered in a prior plan year (and funds are exhausted) you would need to repay the ineligible swipe on your FSA benefit and then, if you choose, make a distribution from your health savings account for the expense amount.