Short answer: a 1031 exchange (from IRC Section 1031) lets you sell investment or business real estate and defer the capital-gains tax by reinvesting the proceeds into “like-kind” real estate. It’s one of the most powerful tax-deferral tools in real estate — but it runs on strict deadlines (45 and 180 days) and precise rules, so it must be set up correctly before you sell.
How does a 1031 exchange work?
When you sell appreciated investment real estate, you’d normally owe capital-gains tax (plus depreciation recapture). A 1031 exchange lets you roll the entire proceeds into a new “like-kind” property and defer that tax. “Like-kind” is broad for real estate — you can exchange, say, a rental building for raw land, an apartment, or a fractional interest — as long as both are real property held for investment or business use. Your personal residence doesn’t qualify.
What are the 1031 deadlines?
- Day 0 — you sell (relinquish) your property; the proceeds go to a qualified intermediary, not to you.
- Within 45 days — you must formally identify potential replacement property in writing.
- Within 180 days — you must close on the replacement property.
- To fully defer — reinvest all the proceeds and replace the debt; any cash or debt relief you keep (“boot”) is taxable.
What are the requirements and pitfalls?
- Qualified intermediary — a third party must hold the proceeds; you cannot receive them.
- Like-kind real property held for investment or business — not a primary home or property held to flip.
- Equal or greater value and debt — to fully defer, don’t “trade down” or pocket cash.
- Same taxpayer — the entity that sold generally must be the one that buys.
- The clock is unforgiving — 45 and 180 days include weekends and holidays.
What if you can’t find a replacement in time?
This is where passive vehicles help. A Delaware Statutory Trust (DST) is pre-packaged institutional real estate whose fractional interests qualify as like-kind replacement property — useful when the 45-day clock is running and you can’t close on a whole building in time. A 721/UPREIT structure can extend the strategy further.
Does a 1031 ever eliminate the tax?
Not by itself — it defers. But investors often “swap till they drop”: exchanging repeatedly to keep deferring, then passing the property to heirs, who may receive a step-up in basis at death that effectively erases the deferred gain. Whether that fits your estate plan is a question for your CPA and estate attorney.
Frequently asked questions
It’s a tax rule that lets you sell investment real estate and defer the capital-gains tax by reinvesting the proceeds into another like-kind property. You must use a qualified intermediary, identify replacements within 45 days, and close within 180 days.
If the building is held for investment or business use, it can generally qualify for a 1031 exchange into other like-kind real estate — deferring the gain. The details (entity, debt, and timing) matter, so structure it with a qualified intermediary and your tax advisors before selling.
The exchange fails and the sale becomes a taxable event. The deadlines are strict and include weekends and holidays, which is why many investors line up replacement options — sometimes a DST — before the clock starts.
Sources
Founder & Financial Planner · Investment Adviser Representative · Series 63 & 65
Ian McGinnis is a financial planner and founder of Dental Wealth Partners, a non-commission, fee-only financial planning firm for dentists. He is the author of The Wealthy Dentist: Smarter Money. Less Stress. More Life. and hosts the Smiles & Cents podcast.
Keep reading
- DST 1031 exchanges for dentists: passive real estate, explainedA Delaware Statutory Trust (DST) lets a dentist complete a 1031 exchange into passive, institutional real estate — no management, but illiquid and accredited-only.
- 721 exchanges and UPREITs for dentists, explainedA 721 exchange lets a dentist roll real estate into a REIT operating partnership tax-deferred, trading control for diversification and eventual liquidity.
- How should a dentist invest in real estate?Dentists can invest in real estate actively (direct ownership) or passively (syndications, DSTs, REITs). How to weigh each — and avoid over-concentration.