1031 exchange basics for individual rental investors

The 30-second version

In a qualifying exchange, current recognition of gain may be postponed by carrying basis into eligible replacement real property. Cash, debt relief, or other non-like-kind property can cause some gain to be recognized. The calculation depends on adjusted basis, liabilities, transaction costs, property use, and the rest of the exchange—not a headline tax rate.

The deferred-exchange deadlines start when the relinquished property is transferred. Missing a requirement can make some or all gain currently recognizable, so the exchange team and written plan should be in place before that transfer.

The two clocks

Both clocks start the day property A closes (the calendar day the sale records, not 24 hours from the moment).

• Day 1-45: Identification period. Replacement property generally must be unambiguously identified in a signed writing delivered to a permitted party within 45 calendar days. Detailed three-property, 200%, and 95% rules govern multiple identifications.
• Exchange period. Replacement property generally must be received by the earlier of 180 days after the transfer or the due date, including extensions, of the return for the transfer year. The 45-day period runs inside this exchange period.

These are calendar-day deadlines. Do not assume a private contract delay extends them. Limited IRS relief can apply in specified federally declared disasters, but eligibility and revised dates must be confirmed from the applicable notice.

The qualified intermediary (QI) safe harbor

Actual or constructive receipt of proceeds can make gain currently recognizable. A properly documented QI arrangement is a common safe harbor for a deferred exchange because the taxpayer's rights to receive or control the funds are restricted.

A QI is not the only structure addressed by the regulations, and a direct simultaneous exchange can be different. For a typical deferred sale-and-replacement transaction, engage tax and legal advisers before the sale and have the exchange agreement executed before the taxpayer receives the proceeds. A QI commonly:

1. Holds the proceeds from property A in escrow
2. Holds the identification documents you submit before day 45
3. Releases the funds directly to the seller of property B at closing

Intermediary regulation and client-fund protections vary. Review ownership, financial controls, bonding or insurance, segregated- account practices, agreement terms, references, security, and the bank holding the funds. Fees vary and should be compared with the full exchange risk and after-tax scenario, not an assumed saving.

What "like-kind" actually means

Like-kind is broader than most investors realize. Any investment-purpose US real estate exchanges for any other investment-purpose US real estate. You can exchange:

• A single-family rental → an apartment building
• A vacant lot → a duplex
• A self-storage facility → raw farmland
• A retail strip → an office condo

What does NOT qualify:

• Your primary residence — 1031 is for investment property only. The Section 121 primary residence exclusion is a different tax benefit.
• Property held primarily for sale — inventory or dealer property does not qualify. Intent is based on facts and circumstances; there is no universal six-month holding-period test that decides every property.
• Foreign real estate — must be US-to-US.
• Personal property — since the 2017 Tax Cuts and Jobs Act, 1031 only covers real property. Equipment, vehicles, etc. no longer qualify.

Full-deferral planning is more than two slogans

Acquiring replacement property of equal or greater value and reinvesting net equity while replacing debt or adding cash are common planning guideposts. They are not a complete statement of the recognized-gain calculation. Basis, liabilities, exchange expenses, money or non-like-kind property received, related-party rules, and property eligibility all matter.

• Value and equity. Have the adviser model both realized gain and the amount that would be recognized under the proposed replacement.
• Liabilities. Net debt relief can affect recognized gain, while additional cash may offset a liability reduction in the calculation.

Money or non-like-kind property received is commonly called "boot" and can trigger current gain up to the applicable amount. It does not automatically make the entire exchange fail.

• Cash boot — you took cash out at closing
• Mortgage boot — the replacement property has less debt than the relinquished property, and you didn't make up the difference in cash

A concrete example

Suppose a duplex sells for $500,000 and has a preliminary adjusted basis of $213,000 before selling costs and other adjustments. The simple $287,000 difference is a starting realized-gain figure, not the tax bill.

• Confirm original and adjusted basis, including land allocation, improvements, and depreciation allowed or allowable.
• Subtract eligible selling or exchange expenses under the applicable rules.
• Account for cash, liabilities, and any non-like-kind property on both sides.
• Report the exchange on Form 8824 and carry the properly adjusted basis into the replacement property.

A qualifying exchange may postpone some or all recognized gain, but replacement basis and depreciation require the full Form 8824 and depreciation calculations. Do not multiply this simplified gain by headline tax rates or assume full deferral without adviser review.

Reverse exchanges — when you find the new property first

A standard 1031 sells property A first, then buys property B. But what if you find the perfect property B before you've sold A? The reverse exchange (formally called a "parking arrangement" under Rev. Proc. 2000-37) lets you do it backwards.

A qualifying exchange accommodation arrangement uses an Exchange Accommodation Titleholder to hold qualified indications of ownership while the required transfers occur. Written-agreement, identification, transfer, related-party, and 180-day limits apply. Fees and financing consequences vary; model them before deciding that a reverse structure is worthwhile.

When 1031 is worth the complexity

Compare the estimated current tax without an exchange with intermediary, advisory, financing, and transaction costs; the basis and future tax profile of the replacement; liquidity; and the investment quality of available replacements.

There is no universal tax-dollar threshold that makes an exchange a no-brainer. A deferral can be a poor trade if the deadline pushes the investor into a weak property or expensive financing. If you're considering a refinance instead, read our guide on how to refinance a rental property and compare the risks separately.

Estate-basis rules can affect inherited property under current law, but eligibility, valuation, prior gifts, ownership, estate tax, state law, and future legislation matter. Do not market a chain of exchanges and death as permanently wiping out deferred gain or as a durable outcome. Coordinate exchange and estate planning with qualified advisers using the law then in effect.

Common mistakes that kill exchanges

• Receiving or controlling cash. Actual or constructive receipt can create current gain or defeat the intended safe harbor; have the closing flow approved in advance.
• Using an invalid identification. Replacement property generally must be unambiguously identified in a signed writing delivered to a permitted party by day 45.
• Misjudging the like-kind boundary. Property held with intent to flip doesn't qualify, even if you ended up holding it for 18 months. Intent matters; the IRS looks at facts and circumstances.
• Hiring a QI who comingled funds. Pick a QI with segregated escrow + bonding. Several big QIs have collapsed historically with investor funds in escrow.
• Trying to identify too many properties. The 3-property rule is the simplest path; alternative rules (200% rule, 95% rule) exist but add complexity. Start with 3.
• Letting day 45 pass without a valid identification. The deadline is strict; only rely on relief expressly provided by applicable IRS guidance.

The practical next steps

If you're considering a 1031 on a property you're about to sell:

1. Before transferring the sale property, have qualified tax and legal advisers confirm eligibility and document the exchange structure. If using a QI, complete due diligence and execute the agreement before receiving or controlling proceeds.
2. Have your CPA model the tax cost of NOT exchanging vs. the constraint cost of identifying within 45 days.
3. Start screening replacement properties through TrueCap before you close the sale. Use the saved-deals dashboard + portfolio rollup to track candidates against your replacement criteria. Pair this with our broader guide on rental property tax deductions to discuss depreciation and basis with your tax adviser.
4. Identify at day 30-35, not day 44. Give yourself buffer in case identified properties fall through during diligence.
5. Close as early as possible inside the 180-day window — don't let it run to day 179 unless you've already pre-cleared inspection + appraisal + financing.

A 1031 exchange changes the timing and basis of tax; it does not guarantee savings or justify its costs by default. Plan the search before the transfer, preserve the option to reject a weak replacement, and compare the complete after-tax alternatives.