My son-in-law flipped 4 houses last year. One under his name and SSN and 3 under his new LLC and EIN. He received 2 1099S (1 under his SSN and 1 under the EIN). He has to report the income on a Schedule C, but do I also need to include the 2 1099S as a sale on form 4797 and D. He did not receive a 1099S or other tax form for the other 2 sales (the LLC was supposed to be a SCorp but wasn't). Any help would be appreciated as he has a major mess this year.
