After you file

@faitt3432 Please explain what you mean by "I used his 2019 income for 2020  the tax return..."    

 

Do you mean that literally----did you enter 2019 income on a 2020 income tax return form?   EXACTLY what income did you enter on a 2020 tax return for your son?

 

 

 Or do you mean you entered his 2020 income and used the "lookback" for earned income credit or child tax credit based on a higher 2019 income?

**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**