@Marjie33
When you ask about a 1099 form, you should always say what kind of 1099 it is. There are over 20 different kinds. There is no plain Form 1099. All 1099 forms have one or more letters after the 1099. The most common are 1099-INT, 1099-DIV, 1099-B, 1099-NEC, 1099-R, and 1099-G. The tax rules are different for different types of 1099 forms.
If your teenager had $400 or more of income on a 1099-NEC she has to file a tax return. Technically she is only required to file if her net self-employment income is $400 or more, after subtracting expenses. But the IRS doesn't know about any expenses unless you file the tax return. They will assume that the entire amount on the 1099-NEC is profit and is subject to self-employment tax.
This is a good example of why you should give exact amounts when you post a question, not "roughly" or "less than." We can't tell whether "less than $500" is less than $400. It makes a difference.
You cannot use TurboTax Free Edition if you have self-employment income, such as income on a 1099-NEC.
