Deductions & credits

Wait, that screen says that "Unfortunately, all of your excess contribution is caused by a prior year excess contribution" That's not what we want. Go back and delete the 1099-SA. Then say that you have Self-only coverage, that you had a carryover ("overfund") of $3,650, and that your current contributions are $4,150 (are you making them directly or through your employer?). 

Eventually, you should see this:

Then go back and add the 1099-SA and work through the HSA interview until you see this:

But this statement is not right: "$7,800 of total contributions ($3,650 of declared excess), $3,650 on the 1099-SA." These two numbers don't add up to $7,800. That's why the 2024 contributions need to be $4,150.

For purposes of calculating the excess, please ignore the 1099-SA. The only reason we care about it is because we want TurboTax to generate the excess screen with $3,650. As you can see, the calculation for the excess in TurboTax pays no attention to any 1099-SA (in fact, for most people, the 1099-SA for an excess does not appear until the next year).

If you do things in this order, you should get what you want.