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New Member
posted Apr 14, 2025 2:02:53 PM

What should I enter for cost basis for stock sale when I don't have a 1099B? It's FIFO and turbo tax wants a number.

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1 Replies
Expert Alumni
Apr 14, 2025 2:12:38 PM

If you don't know the basis, you have to enter zero and pay max tax.   How do I find a stock's cost basis?