I sold a small business Class A shares last 2022 for $1. The original price was $7500. How can I claim this loss this 2024 filing?
If you made this sale in 2022, then you would have to enter it on your 2022 return. This TurboTax FAQ tells you how you can do that using ReFile: I've filed my tax return. Can I still make changes?
Then you can carry forward any unused loss to 2024.