If self-employment income is your only income and you made $400 or more (after deducting expenses) then you are required to report the income.
Any amount of self-employment income needs to be reported if you have other income and are required to file a 2017 tax return.
Please view the TurboTax FAQ below for more information about 2017 filing requirements.
https://ttlc.intuit.com/replies/3302274
