After you file

For parents tax filing for 2020, he cannot be claimed as a dependent.  He makes too much and he is 19+ in 2020.

 

For him, he was 19 in 2020, he is not a student, he lived with parents the entire year, and parents provided the majority of support.  

 

So this tells me that he files as a single but he should still check dependent  because he lives with parents and does not support himself more than 50%.  Is this correct?  

 

Thanks for your help