I had 3k worth of medical expenses last year. Due to laziness on my part not getting an issue with my HSA debit card solved, I paid for all of it with my credit card. Today I made a last minute prior tax year contribution to my HSA for the same amount (3k), and now I'm planning on moving that money back to my primary bank account to "re-imburse" myself for the medical expenses I paid with my credit card.

According to my reading, this is totally legit (I think), but on the other hand I know if I were an IRS person, I'd probably find that rapid moving of money back and fourth awfully suspicious!

My taxes are pretty uncomplicated in general, so I don't really have anything to hide or any worries that I screwed anything up. Still, I assume it's better to not get audited, so I thought I'd check if I'm going about this in the correct way. Heck, leaving the money in my HSA account for longer (which has a higher interest rate than my bank) might be an advantage if that's also fine to do.