Do you have any self employment income? You can look at the actual 1040 here. Check lines 57-62 to see where the extra tax is coming from.
To preview your Online return, go to My Account at the top. Then Tools, then View Tax summary. Then you can click on Preview My 1040 at the top. AGI is on line 37 at bottom of first page.
OR click Review near the top of your screen, and then click Summary right below it.
Then Near the bottom of the We Guarantee Your Maximum Refund screen, click the Preview Return link.
