DavidD66
Expert Alumni

Get your taxes done using TurboTax

In the step by step process for stock sales (1099-B entry) there is a screen where you indicate that your cost basis is incorrect.  You then enter the correct cost basis and TurboTax does the rest.   If you imported your 1099-B you might need to delete the transaction and enter it manually in order to make the adjustment.  

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