After you file

 

 

 

@shood212 

 

9021– Reference Code for all math error conditions.

Note that a "math error" can occur if you make a data entry mistake, or forget to claim some income; and thus the refund amount is incorrectly calculated..  The IRS will be sending you a letter. They do not notify TT. 

**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.**