Most 1031 exchanges that fail do so for dramatic reasons: a blown deadline, a deal that collapsed, taxable boot nobody caught. But a quieter killer trips up careful, well-advised investors every year, and it has nothing to do with the property or the money. It is about whose name is on the paperwork.
The rule is deceptively simple: the taxpayer who sells the relinquished property must be the same taxpayer who buys the replacement. Break that continuity, even with the best intentions, and you can disqualify the exchange in part or entirely. Here is how it goes wrong, and how to stay on the right side of it.
Same taxpayer, not just same person
The word that matters is taxpayer, and it is a tax concept, not a common-sense one. If you sold the old property as "John Smith," you generally need to buy the new one as "John Smith," not as "John and Mary Smith," not as "Smith Family Holdings LLC" you formed last week, not as your new S-corporation. The way title was held on the way out has to match the way it is held on the way in.
The instinct that causes trouble is usually a good one. People decide, in the middle of an exchange, that this is the moment to get organized: add a spouse for estate reasons, bring a child onto the deed, or move the asset into a shiny new entity for liability protection. Every one of those is a fine idea at the right time. In the middle of an exchange is the wrong time, and it can cost you the entire deferral.
The exceptions that actually give you room
Now the reassuring part, because the rule is stricter in appearance than in practice. Tax law looks through certain entities to the individual behind them, and those "disregarded" entities are treated as the same taxpayer:
- A single-member LLC. If a single-member LLC you wholly own is disregarded for tax purposes, you can sell as yourself and buy through that LLC, or sell through the LLC and buy as yourself, or move between two such LLCs you own. The IRS sees the same taxpayer throughout.
- A revocable living trust. A grantor trust is disregarded too. The IRS looks through it to you, so selling in your revocable trust and buying individually (or vice versa) generally works.
These are the tools that let you satisfy the rule while still holding title in a sensible structure. What they have in common is that, for tax purposes, there is only one taxpayer: you.
Where people still get caught
The danger zone is any change that introduces a different taxpayer. A multi-member LLC, a partnership, an S-corporation, or adding a co-owner who was not on the original title all create a new or different taxpayer, and that breaks the chain. Married couples in community-property states have somewhat more flexibility, and there are nuances around how spouses hold title, but those are exactly the details to confirm in advance rather than assume. And because taxpayer identity is determined under federal tax law rather than by what the deed says, you cannot eyeball it: confirm with your CPA that any entity you plan to use is genuinely treated as disregarded.
The simple discipline that avoids all of this
The fix is almost boring: decide how you will hold title before the exchange begins, and do not change it midstream. If you want to restructure ownership, add a family member, or move the property into a new entity, do it well before you start the exchange or well after it closes, never during. An exchange is not the moment to reorganize your holdings. Get the vesting right at the outset, keep it consistent from the relinquished property to the replacement, and this entire category of failure disappears. As always, your CPA and attorney should confirm the vesting for your specific situation, which is part of what our exchange process settles before any clock starts.
Frequently asked questions about the same-taxpayer rule
Can I add my spouse to the title on my replacement property?
Generally not during the exchange. Changing vesting midstream, including adding a spouse, can disqualify the exchange. In community-property states there is more nuance, so confirm your specific situation with your CPA before making any change.
Can I sell as an individual and buy through an LLC?
Yes, if the LLC is a single-member LLC that is disregarded for tax purposes and wholly owned by you. The IRS treats it as the same taxpayer. A multi-member LLC or partnership is a different taxpayer and would break the rule.
Does a revocable living trust satisfy the same-taxpayer rule?
Usually. A revocable living trust is a grantor trust that the IRS disregards, looking through it to you. Selling in the trust and buying individually, or the reverse, generally works, but confirm with your advisor.
What happens if I change how I hold title mid-exchange?
You risk disqualifying the exchange in part or in full, which would make the deferred gain taxable. If you need to change ownership structure, do it well before or well after the exchange, not during it.
Is taxpayer identity just about whose name is on the deed?
No. It is determined under federal tax law, not title vesting alone. Two arrangements that look similar on paper can be treated very differently, which is why confirming disregarded-entity status with your CPA matters.