Resolved:Cost Basis Not Calculating Correctly After Entering A Stock Split
Updated: 3/01/2012
Article ID: SLN58265
There was an issue in which some customers are getting an incorrect cost basis after entering a stock split.
This was due to selecting that the stock split after previously entering a cost basis provided on the 1099-B.
Information for a stock split should only be entered when no cost basis is provided on the 1099-B.

Solution:
If you entered a stock sale from a 1099-B with a Cost Basis, Do Not enter information for a Stock Split and(or) Reinvested Dividends,
These factors have already been accounted for in the cost basis of your 1099-B.
The interview has been improved on how to enter this information in a TurboTax update that was released on 3/01/2012.
For assistance with updating TurboTax please refer to the How to Update TurboTax support article.