The Buy-Exchange-Die Strategy: How the OBBBA Made 1031 Plus Step-Up at Death More Powerful Than Ever

The Mechanic in One Paragraph

Section 1031 defers capital gains tax on the sale of investment real estate when the proceeds are reinvested in like-kind property. The deferred gain rolls forward into the basis of each successive replacement property; it is never extinguished by the exchange itself. When the taxpayer dies holding the replacement property, IRC Section 1014 steps up the property’s basis to fair market value as of the date of death. The cumulative deferred gain accumulated across a lifetime of 1031 exchanges is eliminated. Heirs inherit the property at the stepped-up basis and can sell it the next day with little or no taxable gain. The deferred federal income tax (capital gains tax, depreciation recapture, NIIT) is gone. With the OBBBA’s $15M per-person federal estate tax exemption, most portfolios also avoid federal estate tax entirely.

This page is the comprehensive reference on the buy-exchange-die strategy. For the full 1031 framework, see the investment grade 1031 exchange pillar guide. For the broader investment grade framework, see the investment grade guide.

What the OBBBA Changed

The One Big Beautiful Bill Act, signed July 4, 2025, made three changes that strengthen the buy-exchange-die strategy:

1. Section 1031 preserved. Despite multiple Biden-era proposals to cap 1031 deferrals at $500,000 per taxpayer, no cap was enacted. Section 1031 remains fully intact: no dollar limit, no income limit, no transaction limit. The 45-day identification rule and 180-day completion rule are unchanged. This means investors can continue to chain 1031 exchanges indefinitely across a lifetime, with each exchange deferring 100% of the realized gain.

2. Estate tax exemption raised to $15M/$30M, permanent. The federal estate tax exemption was raised to $15 million per person ($30 million for married couples filing jointly), indexed for inflation starting in 2027. Previously, the exemption had been scheduled to drop back to roughly $7M per person at the end of 2025 under TCJA sunset provisions. The OBBBA made the higher exemption permanent. For real estate investors building portfolios in the $5M to $30M range, this change converts what would have been a partially-taxable estate into a fully-exempt one.

3. Step-up in basis preserved. Multiple proposals in 2021-2024 sought to eliminate or limit the IRC Section 1014 step-up at death. None became law. The OBBBA preserved the full step-up, ensuring that a lifetime of deferred 1031 gain is eliminated at death rather than carried over to heirs at the original basis.

The combination is uniquely powerful. 1031 defers gain across a lifetime. The federal estate tax exempts most portfolios from estate tax. Section 1014 eliminates the deferred income tax at death. The result is that, for most real estate investors, the cumulative tax savings of the buy-exchange-die strategy can exceed the original purchase price of the first property.

The Lifecycle Example: From Age 45 to Age 80

Consider an investor who acquires their first investment grade NNN property at age 45.

Age 45. Acquires a $2M Walgreens NNN property with $1M cash and $1M financing. Initial basis: $2M.

Age 55. Sells the Walgreens for $3M. Realized gain: $1M. 1031 exchange into a $4M Dollar General portfolio (3 properties) with $2M cash and $2M financing. Deferred gain rolls forward; basis in new portfolio: $3M (the original $2M basis plus $1M of additional cash invested, less the $1M deferred gain that reduces basis).

Age 65. Sells the Dollar General portfolio for $6M. Realized gain on the second exchange: $3M. Cumulative deferred gain: $4M. 1031 into a $8M Walmart Neighborhood Market ground lease with $4M cash and $4M financing. New basis: $4M.

Age 75. Sells the Walmart for $12M. Realized gain on the third exchange: $8M. Cumulative deferred gain: $12M. 1031 into a $15M industrial portfolio with $7M cash and $8M financing. New basis: $3M.

Age 80, Death. Investor dies holding the $15M industrial portfolio. Heirs inherit the portfolio at the stepped-up basis equal to the fair market value at date of death (assume $18M after appreciation). The cumulative deferred gain across 30+ years of 1031 exchanges, totaling roughly $12M, is eliminated under IRC Section 1014. The federal estate tax on the $18M portfolio is fully exempt under the $15M (for a single decedent, or $30M MFJ if married). Heirs can sell the portfolio the next day for $18M with little or no taxable gain.

Cumulative tax savings. At a blended federal long-term capital gains plus depreciation recapture rate of approximately 25%, the cumulative federal income tax that would have been due on the $12M of deferred gain is roughly $3M. Add the NIIT, state capital gains tax (in many states), and depreciation recapture interactions, and the all-in tax savings can exceed $4M. For an investor who started with $1M of equity at age 45, the buy-exchange-die strategy returned a tax savings worth four times the original equity investment.

The Trust Structures That Preserve the Step-Up

The IRC Section 1014 step-up is generally available for property included in the decedent’s gross estate. The defensive estate planning structures preserve this:

Revocable Living Trust. A revocable living trust (“living trust” or “grantor trust”) owns the real estate during the investor’s lifetime, with the investor as both grantor and beneficiary. At death, the trust becomes irrevocable, and the property is included in the decedent’s gross estate. The step-up applies. This is the standard structure for real estate investors and avoids probate while preserving step-up.

Marital Trust (A-B Trust or QTIP Trust). For married couples, properly structured marital trusts can use both spouses’ federal estate tax exemptions ($30M total under OBBBA). The first spouse to die transfers property to a credit shelter trust (Trust B) that uses the deceased spouse’s exemption; remaining property goes to the marital trust (Trust A). Step-up applies at the first death (limited to property in Trust A) and at the surviving spouse’s death (full step-up on remaining property).

LLC or Partnership Holding the Property. Real estate held in an LLC or limited partnership is generally still eligible for step-up at the deceased member’s level, provided the entity is properly structured. The entity’s basis in the underlying property does not directly step up, but the heir’s basis in the LLC interest does, which can be passed through via a Section 754 election.

Specific structures depend on the investor’s full estate planning context. Estate planning counsel is essential for portfolios above $5M.

Why You Should Not Gift the Property Before Death

The most common mistake that defeats the buy-exchange-die strategy is gifting the property to children or other heirs during the investor’s lifetime. Gifting transfers the property at the donor’s basis (carryover basis under IRC Section 1015), not the fair market value. The cumulative deferred 1031 gain stays with the property; the heirs inherit the basis problem.

Compare:

• Gift during lifetime. Investor at age 75 gifts the $15M industrial portfolio to children. Children’s basis: $3M (the investor’s basis). When children sell for $18M, taxable gain: $15M. Federal capital gains tax at 20% plus NIIT: $3.6M. Plus state. Plus possible depreciation recapture.
• Hold to death. Investor at age 80 dies holding the $15M industrial portfolio. Step-up basis at date of death: $18M (FMV). When children sell for $18M, taxable gain: $0. Federal tax: $0.

The difference can exceed $3M to $5M of tax on a single transaction. With the OBBBA’s $15M federal estate tax exemption, gifting offers little estate-tax-shelter benefit for portfolios under $15M ($30M MFJ), and it sacrifices the step-up. For most investors, holding to death is structurally superior to lifetime gifting.

The exceptions are narrow: portfolios above the federal estate tax exemption (where lifetime gifting reduces the eventual estate tax base), specific wealth-transfer structures (GRAT, IDGT, dynasty trusts), or cases where the underlying real estate is depreciating in value. For most investment grade NNN portfolios, none of these exceptions applies.

The Step-Up Mechanic in Detail

IRC Section 1014 provides that the basis of property acquired from a decedent is the fair market value of the property at the date of death (or, if the executor elects, at the alternate valuation date six months after death). The step-up applies to all property included in the decedent’s gross estate, including real estate held individually, in revocable trusts, in qualified joint tenancies, and in certain partnership and LLC structures.

The step-up eliminates:

• The cumulative long-term capital gain (the difference between the original purchase price plus capital improvements, less accumulated depreciation, and the fair market value at death)
• The accumulated depreciation recapture (Section 1250 unrecaptured depreciation, which would otherwise be taxed at 25%)
• The Net Investment Income Tax exposure (which applies to the gain if recognized)

What the step-up does not eliminate:

• Federal estate tax (which is determined separately, using the same fair market value for both step-up and estate tax purposes)
• State estate or inheritance tax in states that impose them (currently 17 states plus DC; rates vary widely)
• Income from the property earned after death (which is recognized by the heirs from the date of death forward)

The interaction between step-up and federal estate tax is a key planning point. The step-up always applies to property included in the gross estate, but the gross estate value drives the federal estate tax computation. For portfolios under $15M (single) or $30M (MFJ), the federal estate tax is zero; the step-up applies; and the heirs receive the property with no tax friction. For larger portfolios, additional planning (marital trusts, generation-skipping trusts, GRATs) is required to manage the federal estate tax while preserving the step-up.

State-Level Treatment

Most states follow federal Section 1014 step-up at death, meaning the basis step-up applies for state income tax purposes as well. A few states have non-conforming rules:

• States with their own estate or inheritance tax. Massachusetts, New York, Oregon, Washington, Maryland, New Jersey, Illinois, Connecticut, Hawaii, Minnesota, Maine, Rhode Island, Vermont, Iowa, Kentucky, Pennsylvania, Nebraska, and DC. State estate tax rates and exemptions vary widely (some as low as $1M to $2M).
• California’s clawback (Form 3840). For California-source 1031 gains that have been deferred via out-of-state replacements, California’s clawback may continue post-death. The federal step-up eliminates the federal income tax exposure, but California’s state-level treatment is more complex. See California Form 3840 and the 1031 Clawback Rule.
• State-specific estate planning. High-tax-state residents commonly relocate to no-tax states (Florida, Texas, Tennessee, Nevada) before death to optimize state estate and income tax outcomes.

Common Mistakes That Defeat the Strategy

1. Lifetime gifting. As discussed above, gifting transfers the property at the donor’s basis (carryover basis), not stepped-up basis. This is the most common defeat.
2. Selling before death. Any sale (1031 or taxable) before death recognizes the deferred gain (in the case of a taxable sale) or rolls it forward (in the case of 1031). The step-up only applies if the property is held to death.
3. Improper entity structure. Property held in a corporation (C-Corp or even an S-Corp in some cases) does not receive the same step-up treatment as property held individually or in a partnership/LLC. Step-up applies to the corporate stock, not the underlying property; this can leave the property’s basis stale.
4. Inadequate trust documentation. Property held in a poorly-drafted irrevocable trust may not be included in the decedent’s gross estate, which means the step-up does not apply.
5. Failing to plan for state estate tax. States with $1M to $5M exemptions (Oregon, Washington, Massachusetts, Minnesota) can impose significant state estate tax on portfolios that pass federally tax-free. Coordinated state estate planning is essential.
6. Undocumented date-of-death valuations. The step-up requires a defensible valuation at date of death (or alternate valuation date). For NNN properties, an appraisal at date of death establishes the stepped-up basis. Without a contemporaneous appraisal, IRS challenges to the basis can compress the step-up benefit.
7. Forgetting the spousal rollover. Property passing to a surviving spouse receives an unlimited marital deduction for federal estate tax purposes (under IRC Section 2056), but the step-up at the first death is limited to half the property in community property states. Coordinated planning maximizes both deductions.

For Owners Considering a Sale: The Hold-to-Death Alternative

Investment Grade Income Property, LP represents investors on both acquisitions and dispositions of investment grade NNN nationally. Through Broker of Record co-listing partnerships in all 50 states, we list properties on behalf of sellers, source qualified 1031 capital, and represent owners across the full lifecycle of a transaction.

For owners over the age of 60 contemplating a sale, the most valuable question is often whether to sell at all. We model the disposition scenarios on your specific property (sell outright, 1031 exchange, refinance and hold to death, contribute to UPREIT) and project the after-tax proceeds under each path including the step-up at death analysis. For investors with significant deferred gain who do not need liquidity, the hold-to-death path frequently produces better long-term economics than any sale alternative, because the deferred gain disappears at death rather than being recognized.

Where the analysis points to a sale and 1031 exchange, we represent on both legs of the exchange under one engagement: listing the relinquished property and sourcing the replacement, with the replacement specifically structured to align with the buy-exchange-die strategy (long lease term, investment grade tenant, geographic location compatible with the heirs’ interests).

There is no fee for the initial scenario analysis. See contact Investment Grade.

Frequently Asked Questions: Buy-Exchange-Die Strategy

Related Resources

• Investment Grade 1031 Exchange: The Complete 2026 Guide
• The 1031 Exchange 45-Day Rule
• The 1031 Exchange 180-Day Rule
• 1031 Exchange vs Qualified Opportunity Zone 2.0
• 1031 Exchange Into Bonus Depreciation NNN Properties
• Cost Segregation for NNN Properties
• California Form 3840 and the 1031 Clawback Rule
• The CPA’s 2026 Capital Gains Deferral Decision Tree
• Contact Investment Grade: Acquisitions and Dispositions

This page is a comprehensive educational reference and is not legal, tax, estate planning, or investment advice. Estate planning structures are highly fact-specific and require coordination with estate planning counsel, the CPA, and (for portfolios above the federal estate tax exemption) tax counsel. Investment Grade Income Property, LP represents real estate investors on both acquisitions and dispositions and is not a tax advisor, estate planning attorney, qualified intermediary, or law firm.