remove my son as a dependent on my tax if he earned over 20K , he is 20 years old, still at college, living at home? If keep him as dependent, how to show their income?

This will be done in he My Info or Personal Info section of the return

Log into TurboTax

1. On the left sidebar
2. Select My Info or Personal Info
3. Click the down arrow.
4. You can see your Information
5. Scroll down to a the dependents information
6. You can Edit the dependent status
7. Or delete them from the return