A 1031 exchange and a taxpayer's death intersect in important ways: property held until death generally receives a stepped-up basis, and an exchange that is still in progress when the exchanger dies raises questions for the estate. This guide explains how these scenarios are commonly viewed and why they demand close work with your estate attorney and CPA.
General information only — not tax, legal, or financial advice. A 1031 exchange has strict, unforgiving deadlines and significant tax consequences. Work with a CPA and a qualified intermediary (QI) before you act. A REALTOR® cannot serve as your QI. Verify current IRS and California FTB rules with a licensed tax professional.
The swap-till-you-drop idea
A well-known planning concept is to keep exchanging into replacement property and never sell — deferring gain again and again — until death. At death, heirs may receive a stepped-up basis equal to fair market value, which can eliminate the income tax on the deferred gain. This is why many investors view 1031 as a long-term, generational tool rather than a one-time move.
See our step-up vs 1031 planning guide for the trade-offs.
Step-up in basis at death
When appreciated property passes through an estate, the heirs' basis is generally adjusted to fair market value at the date of death (subject to current law and any applicable estate tax). For property carrying deferred 1031 gain, this step-up can effectively erase the income tax on that deferred gain. Estate-tax exposure is a separate question your advisors must evaluate.
Dying mid-exchange
If the exchanger passes away after selling the relinquished property but before completing the purchase, the situation is delicate. Depending on facts and timing, the successor or estate may be able to complete the exchange within the original deadlines, or the exchange may fail and gain may be recognized. The 45/180-day clocks generally do not pause for death.
An exchange in progress at death is a high-stakes situation. The estate's representative must move quickly with the CPA, attorney, and qualified intermediary to evaluate options.
Who is the taxpayer after death?
- Before completion, the original exchanger is the taxpayer; their estate may step into that role.
- Replacement property received generally takes a basis that, at death, may be stepped up for heirs.
- Trust and entity structures (revocable living trust, LLC) affect how title and the exchange flow through the estate.
California considerations
- California conforms to federal step-up and 1031 rules and enforces through the FTB.
- If the decedent acquired out-of-state replacement property, prior Form 3840 obligations and final reporting must be addressed by the estate.
- Probate or trust administration timing should be coordinated with any pending exchange deadlines.
How Brian helps
Brian works with the estate's attorney, CPA, and QI to keep any in-progress transaction moving and to position inherited real estate for sale or continued holding — handling the real-estate logistics while the legal and tax decisions stay with your advisors.
Frequently Asked Questions
What happens to deferred gain when an exchanger dies?
If the property is held until death, heirs generally receive a stepped-up basis to fair market value, which can eliminate the income tax on the deferred 1031 gain, subject to current law.
Can an exchange be completed if the exchanger dies mid-exchange?
Sometimes. Depending on facts and timing, the estate or successor may complete it within the original deadlines, but the 45/180-day clocks generally do not pause. Act quickly with advisors.
What is the step-up in basis?
It is the adjustment of an heir's basis to the property's fair market value at the date of death, which can erase deferred income tax on appreciation, subject to estate-tax rules.
Does death pause the 45 or 180-day deadlines?
Generally no. The deadlines continue, which is why an in-progress exchange at death requires immediate coordination with the QI, CPA, and attorney.
Does California treat this differently?
California conforms but enforces through the FTB, and any out-of-state replacement property carries Form 3840 obligations the estate must address.
Is this legal or estate advice?
No. This is general educational information. Estate and 1031 intersections are complex — work with your estate attorney and CPA.
