How do I reimburse myself for qualified HSA medical expenses that I paid from another account?
You can reimburse yourself for an out-of-pocket expense by transferring money within online or mobile banking from your HSA account, or using your USB HSA debit card to withdraw cash at an ATM. Note, per IRS Publication 969, expenses incurred before you established your HSA are not qualified medical expenses. Therefore, it is important to know the exact date when your HSA was first opened so you can only reimburse yourself for expenses incurred after that date.