I also have experienced this issue where line 5 shows 401% and the Repayment Limitation line 28 is showing 2,700 for MFJ status. I first saw this when the form became available Jan 20. I tried deleting Form 8962 and 1095-A and re-enter all the information. Same as before. All income has been entered correctly. Obviously, a flaw in Turbo Tax. Hope this gets resolved soon.
