It depends. It is not the amount of gain or loss that matters. All the IRS will take note of when they receive their copy of the 1099-B is the proceeds. They will have no way of knowing if it is a gain or loss without the return. If the proceeds exceed the amount below, then file.
Please see the filing requirements below.
Single dependents under age 65.
You must file a return if any of the following apply.
1. Your unearned income was more than $1,100.
2. Your earned income was more than $12,200.
3. Your gross income was more than the larger of— a. $1,100, or b. Your earned income (up to $11,850) plus $350.
