Does income from seasonal work fall under 1099? or schedule C? What about family help?

[xmasbaby0]

Please explain what you mean by "family help."    That is too vague.

If you worked as an independent contractor for wages from which no tax, Social Security or Medicare was withheld then you have self-employment income and you prepare a Schedule C for your business expenses.   You might receive a 1099NEC --but even if you do not -- if you earn at least $400 of self-employment income it is supposed to be entered on a tax return.

https://ttlc.intuit.com/questions/2926899-how-does-my-side-job-affect-my-taxes

https://ttlc.intuit.com/community/self-employed/help/how-do-i-report-income-from-self-employment/00/...

https://ttlc.intuit.com/community/self-employed/help/what-is-the-self-employment-tax/00/25922

https://ttlc.intuit.com/questions/2902389-why-am-i-paying-self-employment-tax

https://ttlc.intuit.com/questions/1901340-where-do-i-enter-schedule-c

https://ttlc.intuit.com/questions/3398950-what-self-employed-expenses-can-i-deduct

https://ttlc.intuit.com/questions/1901110-do-i-need-to-make-estimated-tax-payments-to-the-irs

[VolvoGirl]

1099NEC  income goes on schedule C.   So it's the same.  It's self employment income.