As a dependent, your filing requirement is $1,100 for unearned income, which is how income from investment is categorized. If you made more than that amount in crypto sales, you will need to file. You may have also had earned income or self-employment income.
Tax filing requirement (for dependents)
The minimum income requiring a dependent to file a federal tax return. 2020 filing requirements for dependents under 65: Earned income of at least $12,400, unearned income (like from investments or trusts) of at least $1,100, or self-employment income over $400.
