@Taxphobia - If two taxpayers claim the same credit and the first e-filed, then the 2nd e-file will reject and must be mail filed. The IRS will send letters to both taxpayers (takes a year or more) to get the taxpayers information that supports their claim. The IRS will make a determination as to which taxpayer can keep the refund and which must pay it back with interest and possible penalties.
**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.**
