Ask the Taxman- When is an employed teenager (age 17) obligated to do/pay taxes?
Source: Quora
Answer:
Anyone regardless of age is required to file once the meet the filing requirement. That filing requirement for someone who is 17 would depend one whether they are being claimed as a dependent or not and the level and type of income.
Filing requirement for a single is $12,550, unearned income (like from investments or trusts) of at least $1,100, or self-employment income over $400.
This may also help
https://apps.irs.gov/app/vita/content/globalmedia/teacher/Filing_req_threshhold_aca_4012.pdf