How to Enter Missing Cost Basis for Mutual Fund Sale

The Form 1099-B I received from my broker shows "Missing" for the cost basis on a couple of mutual fund sales. If I'm able to determine the cost basis for the sales, how do I enter this information into Turbo Tax Premier?

392

Expert Alumni

Mar 13, 2022 6:13:09 AM

It's important to enter a cost or other basis for stock that you sold otherwise, you'll be taxed on 100% of the gain.

You would enter the amount in the cost or other basis box as you're entering your 1099-B form. See Where do I enter a 1099-B?
If you imported your mutual fund transactions, to update your cost basis, see How do I update or delete something I imported into TurboTax?

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How to Enter Missing Cost Basis for Mutual Fund Sale