You'll need to report you digital asset losses on Form 8949 and Schedule D of your tax return. To do this in TurboTax:
- on the screen that shows the summary of your income and expenses, scroll down to the Investments and Savings section and select Start next to Stocks, Cryptocurrency, Mutual Funds, Bonds, Other (1099-B)
- Choose Yes
- Scroll down and choose Enter a different way
- Choose Cryptocurrency and then Continue
- Import your information, or click Type it in myself
- Follow the prompts to enter your digital asset sales