@AJ80 if you don't have any support for a beginning "gifted" basis, then unfortunately that would be your starting point.
However, you most likely don't have zero basis after factoring in all the K-1activity since the gift.
If this was a fairly simple partnership, then it shouldn't take too long to put the appropriate K-1 amounts from each year into excel to arrive at your final cost basis.
*A reminder that posts in a forum such as this do not constitute tax advice.
Also keep in mind the date of replies, as tax law changes.
