The basis of property contributed to a partnership by a partner shall be the adjusted basis of such property to the contributing partner at the time of the contribution increased by the amount (if any) of gain recognized under section 721(b) to the contributing partner at such time.
26 U.S. Code § 723 - Basis of property contributed to partnership
Effective Date of 1984 Amendment
Amendment by Pub. L. 98–369 effective as if included in amendments made by section 2131 of the Tax Reform Act of 1976, Pub. L. 94–455, see section 722(f)(2) of Pub. L. 98–369, set out as a note under section 722 of this title.