Ok, so I'm new to buying bonds on Schwab. Why is this "Estimated Total Cost" over par? If I execute this trade, I'm expecting my total cost to end up being around $91,359 give or take rather than $100,915. Is it just some funky calc for accrued interest I shouldn't care about? How do they come up with $100,915?

My understanding is that:

• Schwab doesn't charge a fee for this online transaction without assistance
• There should be no commission (I bought some agency bonds w/o commission or fee similarly a little while back)
• They expect the price to end up being 91.359... cents on the dollar
• This is a "reopening" (this treasury is being issued for a 3rd time) so the issue date is back in august even though I wouldn't be buying it until now in October.

Sanity check me please!!!

https://preview.redd.it/ty3ysfdiiztb1.png?width=1744&format=png&auto=webp&s=2c953299372cb8063f221b53cd806fc2f3de38cb Edit: I sent the screenshot and a message to customer support. Apparently it takes 2 to 4 days to get a response back but I will update here when I do receive a response. 👍