Real Estate Tax Calc
The plain-English meaning of a 1031 exchange
Imagine you bought a rental house in 2010 for $200,000. By 2026, it is worth $450,000. If you simply sell the house, you have a $250,000 gain. After capital gains tax (say, 20% federal plus state tax), you might keep only $175,000–$200,000 of that profit to reinvest. A 1031 exchange lets you defer that tax—rolling all $450,000 into a new property, rather than only $175,000–$200,000 after paying the IRS first.
Think of it as an IOU to the tax system. You are not erasing the tax—you are postponing it. But the longer you postpone it, the longer that money keeps compounding for you. And if you eventually leave the property to your heirs, they inherit it at the market value at the time of your death (a "stepped-up basis"), which can wipe out the deferred gain entirely.
The name "1031 exchange" is simply the section number in the Internal Revenue Code that creates this tax provision. Real estate investors and tax professionals call it a "1031" for short. Other terms you may hear: "like-kind exchange" (the official name), "tax-deferred exchange," or "Starker exchange" (named after a famous court case that established deferred exchanges).
Where the "1031" name comes from
The Internal Revenue Code is the body of federal tax law enacted by Congress. It is organized by numbered sections—Section 61 covers gross income, Section 121 covers the home sale exclusion, Section 1231 covers business property gains, and so on. Section 1031 is the specific provision that authorizes like-kind exchanges. When practitioners say "a 1031 exchange," they are simply referring to a transaction structured under §1031.
Like-kind exchanges for property have existed in the US tax code in various forms since 1921. The current version of §1031 has been modified multiple times, most recently by the Tax Cuts and Jobs Act of 2017, which restricted the provision to real property only (it previously applied to certain personal property as well).
What "like-kind" means in plain English
For real property, "like-kind" is surprisingly broad. Any US real property held for investment or business use is considered "like-kind" to any other US real property held for investment or business use—regardless of the property type. This means:
A residential rental house is like-kind to a commercial office building. Raw land is like-kind to an apartment complex. A warehouse is like-kind to a shopping center. A single-family rental in Texas is like-kind to a duplex in New York.
What does NOT qualify as "like-kind" to US real property: real property located outside the United States (foreign real property), and personal property (equipment, vehicles, aircraft, artwork)—which no longer qualifies for like-kind exchange treatment at all after TCJA 2017.
The "like-kind" requirement is about the nature of the asset (real property), not its quality or use. An investor can trade a run-down duplex for a gleaming office tower and still qualify.
Who qualifies for a 1031 exchange?
Almost any US taxpayer who owns investment or business real property can use a 1031 exchange. This includes individual investors, partnerships, limited liability companies (LLCs), corporations, trusts, and estates. Foreign nationals who own US investment real estate may also qualify, though FIRPTA withholding rules add complications.
The key qualification is on the property, not the owner: the property must be held for productive use in a trade or business or for investment. Properties that do NOT qualify include:
Primary residences. Your home is not investment property, so it cannot be exchanged. (Note: a home sale may qualify for the §121 exclusion of up to $250,000/$500,000 of gain—a different and separate provision.)
Dealer property. If you are a real estate dealer—someone who buys and sells properties in the ordinary course of business like inventory—the properties you flip may be treated as dealer property and cannot be exchanged. Long-term rental investors are generally not dealers.
Vacation homes with heavy personal use. A vacation home used primarily for personal enjoyment is not investment property unless it has been rented out and the personal use has been limited.
Worked example: the tax deferral in dollars
An investor bought a single-family rental in 2012 for $180,000. By 2026, it has appreciated to $420,000. The investor took $72,000 of depreciation over 14 years ($180,000 building value ÷ 27.5 years × 14 years ≈ $91,636, but let's use a round $72,000 for simplicity).
Adjusted basis: $180,000 − $72,000 = $108,000.
Realized gain: $420,000 − $108,000 = $312,000.
Federal tax without a 1031 exchange (approximate):
— Unrecaptured §1250 gain: $72,000 × 25% = $18,000
— Long-term capital gain: $240,000 × 20% = $48,000
— Net investment income tax: $312,000 × 3.8% = $11,856 (if income exceeds threshold)
— Approximate total federal tax: ~$77,856. Plus state tax.
With a 1031 exchange into a $420,000+ replacement property: The investor can defer all $77,856+ of federal tax by rolling the proceeds into the replacement property. That $77,856 continues to work for the investor instead of going to the IRS immediately. Invested at a 7% annual return, that deferred tax of $77,856 grows to about $204,000 over 20 years—illustrating why even temporary deferral has significant value.
Common misconceptions about 1031 exchanges
Misconception: The properties must be similar in type. False. As explained above, any US investment real property is like-kind to any other. You can exchange a single-family rental for a self-storage facility.
Misconception: You can do a 1031 exchange on your own home. False. Primary residences do not qualify. However, the §121 exclusion (up to $250,000/$500,000 of gain tax-free) applies to primary residences instead.
Misconception: A 1031 exchange eliminates the capital gains tax. False. It defers the tax. The gain carries forward into the replacement property's lower adjusted basis and will be taxable eventually—unless the property is held until death and the stepped-up basis eliminates the gain under IRC §1014.
Misconception: You can touch the money between the sale and purchase. False. If you receive the sale proceeds (even briefly), the exchange fails. A qualified intermediary must hold all funds throughout the exchange period.
Misconception: You have plenty of time to find a replacement property. Partially false. 180 days sounds like a lot, but finding, inspecting, negotiating, and closing on a real property deal in 180 days—after you have already sold your current property—can be very difficult in competitive markets. Begin identifying replacement properties before listing the relinquished property.