Section 721 UPREIT tax treatment: contribution, basis, and the path to REIT shares

The federal mechanics that make a 721 UPREIT contribution attractive are not the same mechanics that make a 1031 exchange attractive. Both defer gain. Beyond that point the two structures diverge in basis treatment, distribution rules, sponsor control, and exit options. This overview indexes a three-part series on the tax treatment, from contribution to conversion to the step-up at death.

Last reviewed: July 8, 2026

Contribution and basis

Section 721 provides that no gain or loss is recognized when property is contributed to a partnership in exchange for a partnership interest. The investor's basis carries over into the operating-partnership (OP) units, and Section 704(c) governs how built-in gain is allocated if the contributed property is sold within seven years. Section 721 contributions: basis carryover and the 7-year hold covers the contribution mechanics and the lock-up covenant that protects them.

Distributions and conversion

OP unitholders receive partnership distributions that reduce basis, while allocated taxable income can exceed the cash actually received. Conversion of OP units to REIT shares is the second taxable moment in the lifecycle, and its treatment is set by the specific agreement, not by the statute. OP unit distributions, phantom income, and conversion to REIT shares explains both exposures.

The step-up and state tax

For investors who hold through death, IRC Section 1014 steps OP units up to fair market value and eliminates the embedded gain, the same endgame as a continued 1031 program. State sourcing rules, California's in particular, can outlive the federal fix. The step-up at death for OP units, and the state tax layer covers the endgame and the state-level questions.

Reading the agreement

Section 721 is a one-line statute. The agreement that operationalizes it is not. The difference between an effective UPREIT contribution and a costly one lies in the conversion mechanics, the lock-up covenant, and the state-tax sourcing, not in the statute itself. Read the agreement, ideally with tax counsel, before the offer is closed.

Figures and examples are general and for educational purposes only. Section 721 contributions raise individual tax questions that require coordination with a qualified tax advisor.