If a dependent or you that you are entitled to claim has already been claimed by another taxpayer, your e-filed return will reject since the SSN has already been used (either intentionally or in error such as a mistyped SSN).
Your only recourse is to file a correct tax return, claiming what you are entitled to claim, then print and mail the return.
The IRS will process both returns and pay any refunds. Shortly (within a year) the IRS will mail letters to both taxpayers.
Do not ignore the letters or you will loose.
Also see this about ID theft:
https://www.irs.gov/newsroom/taxpayer-guide-to-identity-theft
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
