The tax bomb you never have to defuse
Here is the uncomfortable truth about 1031 exchanges: every time you swap, the deferred tax bill gets bigger. It does not reset. It compounds.
Bought Property A in 2008 for $150,000. Sold 2015 for $280,000 into B. Sold B 2022 for $450,000 into C.
Sell C today for $600,000 without another exchange and the IRS wants its money back on the original gain, plus B-to-C, plus roughly $90,000 of depreciation recapture. Federal capital gains at 20%, recapture at 25%, plus state. Easily $150,000 to $200,000.
So you never sell. You swap till you drop.
That phrase is the actual name estate planners use for holding 1031-exchanged property until death, at which point step-up in basis wipes out the entire deferred liability. Every dollar of deferred gain, every dollar of recapture, gone. For a PM-managed portfolio investor who has been 1031ing for 15 or 20 years, this is the single most important estate planning move available in real estate.
How step-up in basis works at death
Step-up is Section 1014. When you die, the cost basis of most appreciated assets is stepped up to fair market value on date of death.
Property C has adjusted basis $80,000 (original minus depreciation, carried through multiple exchanges). Fair market value at death is $600,000. Your heir inherits at a new basis of $600,000 and can sell the next day for $600,000 and owe zero federal capital gains tax. Zero recapture.
The gain you deferred for 20 years evaporates at the moment of death. The IRS does not claw it back. It does not follow to the heir. It stops existing for income tax purposes.
Step-up applies to federal income tax basis only (estate tax is separate). Applies to full fair market value, not just appreciation. Automatic for assets held in your name or a revocable trust. Some irrevocable structures lose it.
The “swap till you drop” strategy in plain English
The strategy in four bullets:
- Buy rental real estate and hold it.
- When you reposition, 1031 exchange instead of selling outright.
- Keep doing this as long as you want to actively invest.
- At death, the final property gets a step-up to fair market value. All deferred tax is eliminated.
The catch is in the word “drop.” If you sell without exchanging at any point before death, you realize every dollar of deferred gain plus all recapture in that one year.
Operator discipline: never break the chain while alive. If you want cash, refinance (debt is not a taxable event). If you want to reposition, exchange. If you want passive, exchange into a Delaware Statutory Trust (still qualifies as like-kind).
Why this makes 1031s the most powerful estate tool in real estate
I have seen portfolios where the deferred tax liability is larger than the original purchase price. One investor I know started with a $400,000 duplex in 2001. Twenty-three years and five exchanges later, he owns a $3.2M apartment building with adjusted basis around $180,000. Deferred federal gain roughly $2.9M. Accumulated depreciation around $600,000.
Sell today and the federal tax bill is close to $730,000. Hold until death and that $730,000 disappears.
No other real estate tax strategy produces that arithmetic. Opportunity Zones defer and partially reduce. Installment sales spread tax. Cost segregation accelerates depreciation. Only 1031 plus step-up produces permanent elimination.
The depreciation recapture question (does it survive death?)
Depreciation recapture is Section 1250. When you sell, the portion of gain attributable to prior depreciation is taxed at up to 25% federal.
Step-up eliminates recapture along with the rest of the deferred gain. The heir’s new basis is fair market value, and their depreciation schedule restarts from there. Recapture does not pass to the heir or get assessed against the estate as income tax. It ends.
Conventional guidance says “1031 defers capital gains tax but not depreciation recapture.” True while alive. At death, step-up resolves both.
Trust structures that preserve step-up (revocable living trust yes, irrevocable no)
Revocable living trust: preserves step-up. Holds your assets during your lifetime, lets you retain full control, passes assets to beneficiaries outside of probate. For federal income tax, property in it is still considered owned by you. At death, full step-up as if held in your name. This is the right structure for the overwhelming majority of PM-managed investors.
Irrevocable trust: usually no step-up. Removes property from your estate. You give up control. Property in a completed-gift irrevocable trust does not get a step-up because you did not own it at death. Exceptions exist (certain grantor trusts where the property stays in the gross estate) but require a specialist. Do not DIY.
LLCs: Pass-through entity, not a trust. Does not by itself affect step-up. What matters is who owns the membership interest. Most investors I work with hold properties in LLCs owned by their revocable trust.
The community property vs separate property basis difference
In a separate-property state (most states), when one spouse dies, only that spouse’s share of jointly owned property gets a step-up. Own 50/50 and one spouse dies, half gets stepped up.
In a community-property state (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin), community property owned by a married couple gets a full double step-up at first death. Both halves revalued.
On $400,000 of appreciation: separate-property state eliminates half at first death; community-property state eliminates the entire $400,000. Some states (Tennessee, Alaska) let you opt in via a community property trust.
What heirs inherit (the depreciation schedule resets)
Once step-up happens, your heir’s tax position:
- New cost basis: fair market value on date of death.
- New depreciation schedule: 27.5 years residential, 39 years commercial, from stepped-up basis.
- Holding period: automatically long-term.
- No inherited chain: the chain ends. The heir owns cleanly.
If you held to $600,000 FMV and land is $150,000, the heir depreciates $450,000 of building value. Roughly $16,400 per year against rental income.
The heir can continue operating, sell immediately with zero federal capital gain, or start their own 1031 chain from stepped-up basis for another generation.
Estate tax thresholds and when 1031s interact with 706 filings
Step-up eliminates deferred income tax at death. It does not eliminate federal estate tax.
The federal estate tax exemption is $13.99M per individual for deaths in 2025, roughly $28M for married couples using portability. Unless Congress acts, the exemption reverts to approximately $7M per individual on January 1, 2026. Verify before planning.
If your gross estate exceeds the exemption, the estate owes 40% on the excess. For real-estate-heavy estates, this can be a larger problem than the income tax you saved by swapping.
Form 706 filing: Executor files within nine months of death. Form 706 establishes fair market value for step-up. Even with no estate tax owed, the executor may file a portability-only 706 to preserve the deceased spouse’s unused exemption.
Qualified appraisals: Get one as of date of death. Without it, defending the stepped-up basis under audit years later is difficult.
Illiquidity: If estate tax exceeds liquid assets, the executor may be forced to sell property. Life insurance in an ILIT is the classic solution.
What documentation your heirs will need at the step-up moment
The win only materializes if your heirs can document the step-up:
- Date-of-death appraisal for each property.
- Original purchase records for every property in the chain.
- Depreciation schedules from every tax year.
- All 1031 documents: Form 8824 per year, QI closing statements, identification letters, settlement statements.
- Property records: leases, PM agreements, loan documents, insurance policies.
- Trust and entity documents: operating agreement, trust agreement, membership certificates.
For PM-managed investors, the 1031 paperwork is the hardest part. Those documents live in QI storage, CPA files, and personal cabinets. After two or three exchanges, reconstructing the chain years later is painful.
Keep a dedicated estate binder with a one-page summary per property: purchase date, original basis, every 1031 in the chain, current adjusted basis, date-of-death instructions.
Tools like DoorVault help by keeping PM statements, leases, loan documents, and capital transaction history in one system. When your executor assembles the Form 706 package, they pull a clean report with every property and every supporting document attached.
Key takeaways
- Swap till you drop is a real strategy. 1031 deferral during life plus step-up at death permanently eliminates deferred capital gains and recapture.
- Never break the chain. Selling without exchanging before death realizes decades of gain in one year.
- Depreciation recapture is eliminated at death, not just deferred.
- Revocable living trust preserves step-up; most irrevocable trusts do not.
- Community property states give married couples a double step-up.
- Step-up does not avoid federal estate tax. Plan separately if gross estate exceeds the exemption.
- Documentation determines whether the win materializes.
The discipline is simple. The reward is enormous. The documentation burden is manageable if you treat your portfolio like a business.
Related 1031 resources
- Complete 1031 guide: doorvault.app/pillar/1031-exchange
- Boot and depreciation recapture mechanics: blog.doorvault.app/1031-exchange-boot-depreciation-recapture
- Scaling a rental portfolio with 1031s: blog.doorvault.app/1031-exchange-scale-rental-portfolio
- 1031 glossary entry: doorvault.app/glossary/1031-exchange
- For 1031 investors: doorvault.app/for/1031-exchange-investors
DoorVault helps PM-managed investors verify owner statements, track portfolio performance, and prepare taxes with AI-powered intelligence. When your estate plan depends on an unbroken 1031 chain spanning decades, DoorVault keeps every exchange document, depreciation schedule, and property record organized so your heirs inherit both the property and the paper trail. Start free at doorvault.app.
