It sounds like one of your younger children is receiving the $500 credit instead of the $2,000 credit. Revisit the entries for both of the younger children. You noted that they were both under 17, so it is likely that there is a missed checkbox somewhere along the way. As @xmasbaby0 mentions, if your child was older than 16, they then become eligible for the $500 Other Dependent Credit instead of the Child Tax Credit.
Here's how to check your entries in TurboTax Online:
- Navigate to My Info, Your household, select the first dependent.
- Choose "My child", continue and be sure their name, date of birth and proper citizenship is complete.
- Continue, and answer the question about living arrangements and parents.
- Continue, and answer any less common situations, if applicable.
- Lastly, enter the child's SSN and be sure that "Not valid for employment is printed..." is NOT checked.
