I've nearly completed my 2019 taxes and am nearly ready to file, but it shows that I owe about $100 each to state and federal. I'd like to see how making a $1000 catch-up contribution to my 2018 HSA would reduce that, but I can't seem to find out how to enter that in TurboTax. When I go to the Medical section, it gives me an option to add another 1099-SA, but I don't have one (not yet, as I haven't actually made the contribution yet). How can I do this?
