Of course the IRS sometimes makes mistakes. Without some details from you, no one here can guess whether you should challenge what the IRS is saying about your prior year return. What does the letter say they are changing? TurboTax does not receive any information from the IRS about your tax return after it has been filed, so no one at TT knows what the IRS is saying to you.
**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.**
