Well you have to report it as self employment income on schedule C but there won't be any self employment tax under $433. Self Employment tax (Scheduled SE) is automatically generated if a person has $400 or more of net profit from self-employment. You pay 15.3% SE tax on 92.35% of your Net Profit (If it is greater than $400). The 15.3% self employed SE Tax is to pay both the employer part and employee part of Social Security and Medicare (FICA). So you get social security credit for it when you retire. It is in addition to any regular income tax you owe on it.
If you have self-employment income you can only contribute up to your net profit reduced by the deduction allowed for the ER portion of your self-employment taxes. The 1/2 SE Tax amount will be on Schedule 1 line 15 which goes to 1040 line 10.
See IRS publication 590A page 6 about self employment income (it applies to both Traditional and ROTH IRAs)
https://www.irs.gov/pub/irs-pdf/p590a.pdf
