Under Personal Income, does Turbo Tax want me to enter the value of my HSA on 4/15/19, or the value on 12/31/18 plus contributions from 1/1/18 through 4/15/19?

[sjgalick]

The two numbers are not the same, because the HSA value on 4/15/19 also includes interest earned and excludes withdrawals.

[BMcCalpin]

I am not sure what you mean.

If you have received an excess contribution message in TurboTax, then one of the questions is "What was the value of your HSA on 12/31/2018?" In this case, it wants to know the value on that date, which you can get from the 5498-SA, if you have received it (box 5). You would not add anything to try to derive the current vlaue.

If this is not the question you had, please come back in the comments with the heading of the screen where you see this question.