Self employed

Thank you, will this be done on my schedule c, I filed a schedule c last year as advised by turbo tax, entered the 1099k amount and left the cogs blank. I’m assuming this was wrong from your reply. This year, I have a 1099k for about 3100 and income from PayPal about 700 ( I will get the exact amounts of course) so I enter both of these on the sch c with my fees?  But should I put a zero in costs and state personal property no receipts?