After I selected "Yes, I was covered by an HDHP during at least one month ruing 2021", I see my tax due dropped a lot. I'm confused. Because I think the amount contributed to my HSA account by my employer and myself is already in W-2 12c-W, and W-2 had been input in TurboTax at very beginning. I thought TurboTax should already know I'm covered by HDHP since I contributed to HSA.
1. How can this option impact so much?
2. What does it mean if I select "No, I did not have coverage" while I contributed to HSA in W-2?
