After you file

Thanks, but how do I estimate my cost basis? I had K1 from that investment for 2020 and 2021 and when I looked at that document it currently shows a carryover loss of about the same amount I had invested.  The total amount of money I received at the sale was about 1.4X times what I had invested originally but the carryover from that investment is almost equal to the amount I originally invested.