The Same-Taxpayer Doctrine

The requirement is easy to state and surprisingly difficult to locate in the statute. This chapter derives it, identifies the variations in title-holding that do not violate it, and takes up the interruptions that occur when a taxpayer dies, divorces, or restructures in the middle of an exchange.

18.1 Where the requirement comes from

No sentence of section 1031 says that the taxpayer who transfers the relinquished property must be the taxpayer who receives the replacement property. The requirement is nonetheless real, and it follows from three features of the provision working together.

The statutory text is written in the singular and about a single holder. Nonrecognition applies where real property "held" for a qualifying purpose is exchanged for real property "which is to be held" for such a purpose.¹ The grammar contemplates one holder on both sides of the transaction, not a transfer by one person and an acquisition by another.

The basis mechanism requires it. Section 1031(d) preserves the unrecognized gain by carrying the basis of the relinquished property into the replacement property.² That carryover is coherent only if the same taxpayer holds both. If A transferred and B acquired, there would be no principled account of whose basis carries into what, and the deferred gain would either vanish or attach to a taxpayer who never realized it.

Nonrecognition is not elective. As Chapter 9 develops, section 1031 applies of its own force when its conditions are met, and a doctrine that permitted substitution of taxpayers would allow gain to be moved between persons by arranging the closings.

The requirement is therefore structural rather than textual, which explains both its firmness and its flexibility. It is firm because the basis mechanism depends on it absolutely. It is flexible because what it demands is continuity of the taxpayer, not continuity of the titleholder, and those are different things.

18.2 Disregarded entities

The distinction between taxpayer and titleholder does most of the practical work in this area, and the entity classification regulations supply the mechanism.

An eligible business entity with a single owner that does not elect to be classified as a corporation is disregarded as an entity separate from its owner.³ A disregarded entity has no separate tax existence. Its assets are the owner's assets, its activities are the owner's activities, and its acquisitions are the owner's acquisitions.

The consequence for exchanges is direct. Title may move between an individual and a wholly owned limited liability company, or between two such companies, without any change in the taxpayer, because in each case the same person is the taxpayer throughout.

The recurring patterns are these. An individual transfers relinquished property held in individual name and takes title to replacement property in a newly formed single-member limited liability company. A taxpayer transfers property held in one wholly owned company and acquires through a second wholly owned company. A taxpayer holding in individual name acquires in a revocable grantor trust. In each case the exchange is by one taxpayer.

Three cautions attend the technique.

The entity must actually be disregarded. A second member, however small the interest and whatever the family relationship, converts the entity into a partnership and breaks continuity. Practitioners should confirm membership rather than assume it, particularly where operating agreements were drafted years earlier or where a spouse was added for estate planning in a jurisdiction that is not a community property State.

Lender requirements are the usual reason title moves, and they are a legitimate reason. A lender insisting that the borrower be a special purpose entity is asking for a titleholder, not a taxpayer, and the request can be accommodated.

Formation timing should precede the closing. Forming the entity after the intermediary has contracted to acquire the replacement property invites an argument about who acquired what, and the cure costs nothing if done in advance.

18.3 Variations that do not break continuity

Beyond disregarded entities, a set of recurring variations preserve taxpayer identity, and it is worth cataloguing them because clients propose them constantly.

Spouses filing jointly present a question that depends on State law and on how title is held rather than on the joint return. A joint return does not merge two taxpayers into one, and practitioners in non-community property States should attend to which spouse holds which property. Maryland is not a community property State, which makes this a live question in local practice.

Revocable trusts are generally grantor trusts and therefore disregarded, so a transfer between a taxpayer and that taxpayer's revocable trust does not change the taxpayer.⁴

Changes in the form of a continuing entity, such as a conversion from one State's limited liability company statute to another's, or a change of name, do not create a new taxpayer where the entity's classification is unchanged.

Two patterns that clients propose do not preserve identity, and both are common enough to name.

A partnership cannot transfer relinquished property and have its partners acquire replacement property individually. The partnership is the taxpayer. This is the drop and swap problem, and it is the subject of Chapter 20 rather than a variation to be waved through.

A taxpayer cannot transfer individually and acquire through an entity with other owners, however modest their stake. The recipient is a different taxpayer.

18.4 Death, divorce, and involuntary substitution

An exchange spans up to one hundred eighty days, and taxpayers do not suspend their lives for the duration. Three interruptions recur.

Death. Where a taxpayer dies after transferring the relinquished property but before acquiring the replacement property, the practitioner position is that the estate or trustee may complete the exchange, on the reasoning that the estate succeeds to the decedent's position rather than constituting a substituted party. Practitioners should understand that this position rests on limited published authority, and that the analysis interacts with the basis adjustment at death under section 1014. Where property receives a basis equal to fair market value at death, completing an exchange to defer gain that section 1014 would eliminate may be unnecessary or affirmatively disadvantageous.⁵ Chapter 46 develops the interaction, and the decision should be made deliberately rather than by momentum.

Divorce. Transfers between spouses, or former spouses incident to divorce, are governed by section 1041 and are themselves nonrecognition events with carryover basis.⁶ The interaction with a pending exchange is genuinely awkward: a section 1041 transfer changes the taxpayer for section 1031 purposes while producing no recognized gain of its own. The safer sequencing completes the exchange before the marital transfer, leaving the replacement property to be divided afterward.

Entity restructuring. Mergers, conversions, and reorganizations executed mid-exchange for unrelated business reasons can substitute a taxpayer without anyone intending it. The practical rule is that restructuring should be deferred until after the exchange period closes, and where it cannot be, the transaction requires analysis rather than assumption.

A closing observation applies to all three. The same-taxpayer requirement is tested at two moments separated in time, and nothing in the doctrine freezes the taxpayer's circumstances in between. Anticipating the interruption is cheap. Repairing it is often impossible, because the exchange period does not extend for hardship and the deadlines examined in Chapter 26 admit of almost no exceptions.