On the W2 entry page, there is a dropdown menu to select which person the W2 is for. This is a very easy thing for a human to do incorrectly or gloss over. The Turbotax software should be easily able to check the name on the W2 and assign it to the correct person. At the very least, it should be checked by the error checker that runs right before submitting the return. This easy-to-catch mistake can result in thousands of dollars in Social Security taxes being incorrectly refunded.
