ThomasM125
Expert Alumni

Investors & landlords

If you are sure you know the correct cost basis, you should enter the Form 1099-B as it is stated. When you enter the sales proceeds and cost basis in TurboTax, there is an option to enter a corrected cost basis if the one reported on the Form 1099-B is incorrect. Just click on the box that says the cost basis is incorrect or missing on my Form 1099-B:

 

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