It depends what type of income your son had. If he meets the qualifications below, you can include the income on your return on Form 8814. Otherwise, he will need to file Form 8615 on his own return.
You can make this election if your child meets all of the following conditions.
• The child was under age 19 (or under age 24 if a full-time student) at the end of 2020. “Student” is defined below.
• The child’s only income was from interest and dividends, including capital gain distributions and Alaska Permanent Fund dividends.
• The child’s gross income for 2020 was less than $11,000. • The child is required to file a 2020 return. • The child does not file a joint return for 2020.
• There were no estimated tax payments for the child for 2020 (including any overpayment of tax from his or her 2019 return applied to 2020 estimated tax).
• There was no federal income tax withheld from the child’s income. You must also qualify. See Parents who qualify to make the election below
