To report wash sale transactions, you will need to check the "I need to adjust my total cost basis" box directly under the Total cost or other basis (sum of all Box 1e) box.
When inputting your Form 1099-B information do the following:
- Click on Wages & Income
- Select Add more income
- Scroll down to Investments and Savings and click down arrow
- Select Stock, Crypto...(1099-B...)
- Select Add investments, Add a different way
- Select Stock, Bonds, Mutual Funds (1099-B)
- Enter brokerage information, then Continue
- In the "Tell us about the sales..." section, answer those questions, then Continue
- In the "Now choose how to enter your sales", Continue
- Here, you will reach the box below the sales section, I need to adjust my total cost basis
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