IRC Section 721 permits partners to contribute property to a partnership in exchange for partnership interest without recognizing gain or loss on the contribution. This nonrecognition treatment applies as long as the contribution does not create a disguised sale (IRC Section 707(a)) or trigger other exceptions. A real estate investor contributing appreciated real property worth $5 million with adjusted basis of $2 million does not recognize the $3 million built-in gain upon contribution to a partnership. The investor's basis in the partnership interest equals the adjusted basis in the contributed property ($2 million), carrying forward the deferred gain. This nonrecognition treatment is favorable for restructuring portfolio assets, forming partnerships, and coordinating multi-party ownership of assets.
Basis of Partnership Interest from Property Contribution
When a partner contributes property to a partnership, the partner's adjusted basis in the partnership interest equals the partner's adjusted basis in the contributed property. If a partner contributes $2 million in cash and property with basis of $3 million, the partner's total basis in the partnership interest is $5 million. The partnership's adjusted basis in the contributed property (from the partnership's perspective) also equals the contributing partner's adjusted basis in the property (IRC Section 723). This basis carryover preserves the built-in gain for future recognition. If the partnership later sells the contributed property, the gain recognized is the difference between the sale proceeds and the partnership's basis (which equals the partner's prior basis).
Built-In Gain Preservation and IRC Section 704(c)
While Section 721 permits nonrecognition of gain on contribution, Section 704(c) preserves the built-in gain for later recognition when the property is sold by the partnership. The built-in gain is allocated to the contributing partner (not shared with other partners). This preserves the contributing partner's economic position: the gain that existed at contribution time is recognized only to that partner when ultimately realized. Section 704(c) prevents contribution-based loss of gain through allocation to other partners or deferral indefinitely through holding in partnership.
Liabilities and Basis Adjustment Under Section 752
When a partner contributes property subject to liabilities, the partner's basis in the partnership interest is adjusted by the amount of liabilities relieved by the partnership. If a partner contributes property with basis of $500,000 and mortgages of $200,000 (assumed by partnership), the partner's basis in the partnership interest is: $500,000 (basis in property) minus $200,000 (liability relief) = $300,000. The liability relief reduces basis because the partner has transferred debt obligation to the partnership. Conversely, if the partner contributes property and the partnership distributes debt or the partner is allocated debt (through IRC Section 752), the partner's basis increases. These basis adjustments can create negative basis (partner's basis reduced below zero), which triggers gain recognition to the extent basis would go negative.
Recourse vs. Nonrecourse Liabilities and Partner Basis
Recourse liabilities (for which the partner is personally liable) are treated as a liability the partner is relieved of when contributed to the partnership. Nonrecourse liabilities (secured by the property but without personal liability) are shared among all partners and increase each partner's basis by that partner's share. If a partner contributes property with a $2 million nonrecourse mortgage, and the partner is one of three equal partners, the partner's basis increases by $2 million (1/3 share of $2 million liability). The partnership's other two partners' bases also increase by their shares of the liability. This differential treatment of recourse and nonrecourse liabilities can create significant basis variation among partners.
Investment Company Exception and Exclusions
IRC Section 721 does not apply to contributions to an investment company partnership (a partnership where substantially all the assets are passive investments generating dividends, interest, or investment income). A partnership formed to hold securities, bonds, or diversified investment portfolio does not qualify for Section 721 nonrecognition. A partner contributing appreciated securities to an investment company partnership recognizes gain on the contribution. This exception prevents use of partnership nonrecognition treatment as a tax deferral mechanism for investment portfolios. Investment companies are specifically excluded because they are presumed to be financial vehicles without business purpose beyond tax deferral.
Curative Allocations and Section 704(c) Methods
When contributing property with built-in gain to a partnership, the contributing partner should consider which Section 704(c) allocation method the partnership will use: traditional method (allocates built-in gain to contributing partner when property is sold), remedial method (allocates gain and creates offsetting remedial allocations to other partners), or curative method (intermediate between traditional and remedial). The choice affects tax results to contributing and non-contributing partners. The partnership agreement should specify the method chosen. A partner sensitive to potential adjustments to partnership allocations should ensure the partnership agreement clearly specifies use of traditional method (which is typically most straightforward).
Multi-Step Structuring: Contribution Followed by Allocation
A sophisticated transaction might involve: (1) Partner A contributes property to partnership, (2) Partnership allocates income/losses to Partner A (using special allocation provisions), (3) Later, partnership distributes property to Partner B. This structure permits customized allocation of income and loss while maintaining Section 721 nonrecognition on the initial contribution. The partnership agreement must be carefully drafted to ensure that the special allocations have substantial economic effect (IRC Section 704(b) requirement) and are not disguised distributions or allocations without economic substance.
Basis Tracking and Future Dispositions
The partner must track the basis in the partnership interest separately from the partnership's basis in the contributed property. If a partner contributes property with basis $1 million and later receives distributions of $500,000, the partner's basis in the partnership interest is reduced to $500,000 (basis less distributions). The partnership's basis in the contributed property remains the same ($1 million) unless the partnership makes elections under IRC Section 754 (step-up in basis on transfer or distribution). Without Section 754 election, the partnership's basis in property and the partner's basis in the partnership interest diverge, creating potential double-gain or double-loss recognition in later transactions.