1033 Like-Kind Exchange Detail

A 1033 like-kind exchange (formerly called a 1031 exchange under Section 1031 of the Internal Revenue Code, renamed 1033 under the Tax Cuts and Jobs Act of 2017) is a tax-deferred transaction in which a property owner sells one real estate asset and reinvests the proceeds in a qualifying replacement property. The sale and purchase are structured to defer capital gains tax, allowing investors to compound wealth without immediate tax liability.

The core mechanics: You own a rental property worth $500,000 with a basis of $200,000 (gain of $300,000). Under normal circumstances, selling the property triggers $300,000 in capital-gains-tax, reducing proceeds available to reinvest. A 1033 exchange allows you to defer that tax if you “exchange” the property for another qualifying replacement property of equal or greater value. The tax is not forgiven; it is deferred until the replacement property is eventually sold (or reinvested in another exchange).

The name “like-kind exchange” is a misnomer in modern law. After 2017, “like-kind” applies only to real property. Real estate for real estate qualifies; equipment-for-equipment does not. The IRS is flexible on the definition: any real property is like-kind to any other real property. Commercial can exchange for residential; improved property for bare land. Geographic location is irrelevant.

Why it matters

A 1033 exchange lets an investor build real estate wealth without repeatedly paying capital gains tax. An investor acquires a property in 1990, holds for 20 years, accumulating $400k in gains. Without an exchange, selling triggers ~$100k in federal plus state capital-gains tax (depending on state and income). The net proceeds are $400k less, so $300k is available to reinvest. With a 1033 exchange, the full $700k (sale price) is reinvested, allowing larger purchases and compounding. The tax is ultimately due when the investor exits real estate entirely, but the deferral allows decades of compounding.

For portfolio managers and real estate operators, 1033 exchanges are a critical wealth-building tool.

The strict timing

The IRS enforces two deadlines ruthlessly:

The 45-day identification period. You must identify the replacement property (or properties) in writing within 45 calendar days of closing the sale. You can identify up to three properties of any value, or more than three properties if their aggregate value is no more than 200% of the relinquished property’s sale price. Many investors identify multiple properties to keep options open, then narrow the list as negotiations progress.

The 180-day closing period. The replacement property must actually close and funds delivered within 180 calendar days of the sale closing. The 45 and 180-day clocks run concurrently; you have a total of 180 days from the sale to identify and close on the replacement. Missing either deadline disqualifies the exchange and triggers immediate capital-gains tax.

Because timing is so tight, most investors use a qualified intermediary—a third party that holds the sale proceeds and manages compliance. The intermediary is not the buyer or seller; it is a neutral escrow agent. The intermediary holds the sale proceeds and, once the replacement property is identified, uses those proceeds to purchase it. The investor never touches the cash (critical point: if the investor takes possession of funds before purchase, the IRS treats it as a taxable sale, not an exchange).

Boot and tax liability

“Boot” is cash or other non-real-estate property involved in the exchange. If you sell for $700k and reinvest $700k in a replacement property, there is no boot and no tax. But if you sell for $700k and buy a replacement for only $600k, you have $100k in boot received (cash pocketed). You owe capital-gains tax on the $100k of boot received.

Mortgage debt is treated as boot. If the relinquished property has a $200k mortgage and the replacement has a $100k mortgage, you are receiving $100k in boot relief and owe tax on it (subject to the gains in the exchange). Conversely, if the relinquished property has a $100k mortgage and the replacement has a $200k mortgage, you are assuming $100k in additional debt, treated as boot paid, which offsets the boot received.

The principle: the more cash and less debt in the replacement, the higher the tax liability.

Debt restructuring via 1033

A savvy use of 1033 exchanges is to refinance or restructure debt. If your original property has a $500k mortgage and you want to reduce leverage, a 1033 exchange allows you to:

1. Sell the property (proceeds include payoff of the $500k mortgage).
2. Acquire a replacement property with a lower mortgage, say $300k.
3. The $200k in debt relief is boot paid (favorable), reducing or eliminating tax on gains.

This is legal and widely used to both upgrade properties and improve loan-to-value ratios.

Multi-property exchanges

An investor can identify multiple replacement properties. If you sell one commercial property, you can identify three properties to potentially replace it, maintaining flexibility during negotiation. Or you can acquire multiple properties in a single exchange. Aggregate value must exceed the sale proceeds; identified properties must be of equal or greater total value to avoid boot.

State considerations

While 1033 exchanges are federal tax law, some states (e.g., California) allow state-level 1033 deferrals; others do not. If you are subject to state capital-gains tax, check state rules. A federally qualified 1033 exchange may not be recognized by the state, requiring you to pay state tax even though federal tax is deferred.

Death and basis step-up

A critical limitation: at the original investor’s death, the basis-step-up-inheritance does not apply to the replacement property acquired via 1033 exchange. The heir inherits the entire “substituted basis” (the original property’s basis plus improvements, minus depreciation). If an investor acquired Property A in 1990 at $100k, exchanged it in 2000 into Property B, then died in 2020, the heir inherits with a basis in Property B of roughly the same cost basis as Property A (adjusted for subsequent improvements and depreciation). The original gain is still embedded; selling Property B would trigger the deferred tax.

Contrast this with a heir who simply inherits Property A when the original owner dies. The heir’s basis steps up to fair market value at date of death; no deferred gains are embedded. This is one reason some investors choose not to do a final 1033 exchange late in life—they prefer to hold the property and let heirs benefit from the step-up.

Reinvestment timing

The 1033 exchange does not require reinvestment; it requires the identification and purchase of a replacement within 180 days. Many investors use this as a planning tool: if unsure of the next investment, they can identify properties within 45 days and negotiate contracts up to the 180-day deadline. The flexibility is valuable in a negotiation-heavy market.

Practical example

You own an apartment building purchased in 2000 for $1.2M, now worth $3M. Your basis is $800k (after depreciation). Gain = $2.2M. Selling triggers ~$550k in federal capital-gains tax (long-term rate ~23.8% including NIIT, plus state tax).

A 1033 exchange: Sell for $3M, identify a replacement property worth ≥$3M, and close within 180 days. Proceeds of ~$2.45M (after closing costs) are reinvested in the replacement. Deferred tax = $0 now; reinvested capital = $2.45M vs. $1.9M after tax. Over 10 years, that extra $550k compounds significantly.