How do you know there is a child tax credit for the 21 year old?
If there is a child tax credit on the Form 1040 Line 28 then the information for the dependent may be in error. If so, go back and make sure the date of birth is correct and in the format mm/dd/yyyy
You can view your Form 1040 at any time using the online editions. Click on Tax Tools on the left side of the online program screen. Click on Tools. Click on View Tax Summary. Click on Preview my 1040 on the left side of the screen.
