1031 exchange basics for individual rental investors

The 30-second version

You sell rental property A. Instead of taking the cash and paying capital gains tax (federal long-term capital gains: 15-20%, plus depreciation recapture at up to 25%, plus state tax in non-zero-tax states), you roll the proceeds into rental property B through a qualified intermediary. Federal taxes are deferred until you eventually sell B without exchanging — which, for serious investors, can mean "forever, because I never stop exchanging until I die and my heirs inherit at stepped-up basis."

The catch: a clock starts the moment property A closes, and you have very tight deadlines to identify + close property B. Miss them and the whole tax shelter collapses.

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. You have 45 calendar days to formally identify in writing the replacement property (or properties) you intend to acquire. Identification is done in writing through your qualified intermediary — it's NOT just "I'm looking at this place." There are strict identification rules (most investors use the "3-property rule" — identify up to 3 candidates, then close on one or more).
• Day 1-180: Closing period. You must close on at least one identified property within 180 days of the day property A sold. This includes the 45-day identification window — so once you blow past day 45 without identifying, you're out, even though you'd still have 135 more days to theoretically close.

Both deadlines are calendar days, not business days. Weekends and holidays count. There are NO extensions for any reason (illness, market conditions, contract delays) except in rare presidentially-declared disaster scenarios.

The qualified intermediary (QI) — non-negotiable

You CANNOT take possession of the sale proceeds at any point. Not for a day, not for a minute. The moment the buyer's funds touch your bank account, you've received "constructive receipt" and the 1031 exchange is dead.

That's why a Qualified Intermediary (QI) is required by IRS regulation. The QI is a third-party entity that:

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

QIs are not banks and are not federally regulated as such — pick one with at least a decade of track record, written bonding, and segregated escrow accounts. Cost is typically $750-$1,500 per exchange. Cheap relative to the tax savings; never cheap out on the QI.

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 — flippers cannot 1031 their flips. The IRS looks at intent. A property bought-rehabbed-sold within 6 months is treated as inventory, not investment.
• 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.

The full-deferral rules

To defer ALL the gain, two rules apply at the replacement-property closing:

• The replacement must cost AT LEAST as much as the relinquished property sold for. (Trading up.)
• You must reinvest all the cash proceeds AND replace the debt that was on property A. If property A had a $200k mortgage paid off at closing, property B must carry at least $200k of debt — OR you must inject $200k of new cash to replace it.

If you violate either, you get partial deferral. The portion you DIDN'T reinvest is called "boot" and is taxable in the year of the exchange. Boot can be:

• 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

You sell a duplex you've owned for 8 years.

• Sale price: $500,000
• Original purchase: $300,000
• Depreciation taken over 8 years: $87,000
• Mortgage payoff at sale: $180,000
• Adjusted basis: $300,000 - $87,000 = $213,000
• Total taxable gain (if you DIDN'T exchange): $500,000 - $213,000 = $287,000
• Federal tax at standard rates (15% LTCG on $200k + 25% recapture on $87k): $30,000 + $21,750 = ~$52k of federal tax, plus state

With a 1031 exchange into a property purchased for $600,000 with at least $180k in new debt (or that much fresh cash to cover the mortgage gap): you defer the entire $52k of federal tax. Your new property has a carried-over basis: $213k original adjusted basis + $100k of cash you brought to close = $313k, with depreciation continuing on the carried-over $213k portion at the original schedule, and the new $100k starting a fresh 27.5-year clock.

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.

Mechanics: a QI affiliate (an Exchange Accommodation Titleholder, EAT) buys and parks property B in their name while you find a buyer for property A. You have the same 45/180-day clocks but counted from when property B was acquired. Costs are higher ($3-5k+ vs $750-1500 for standard) because the EAT carries real estate temporarily. Worth it for rare deals you can't replace.

When 1031 is worth the complexity

Run the math: how much federal tax would you owe if you sold without exchanging? If it's < $15k, 1031 is probably not worth the QI cost + the constrained timeline + the risk of being forced into a worse property B than you'd otherwise pick.

If federal tax due would be $25k+, 1031 starts being a no-brainer for investors who plan to roll into another deal anyway.

Strategic note: many serious long-term investors chain 1031 exchanges for decades, then die without selling. Heirs inherit at stepped-up basis (current fair market value, not the original cost basis you've been carrying), which permanently wipes out the deferred gain. That's the "buy, refi, hold, exchange, die" meme — it's not a joke, it's a real and durable tax strategy at scale.

Common mistakes that kill exchanges

• Taking cash at closing. Even "just $5k to cover closing costs." You've received constructive receipt; exchange dead.
• Identifying replacement property by phone, text, or verbal. Must be in writing, signed, delivered to the QI 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 formally identifying. No extensions. Ever.

The practical next steps

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

1. Find and engage a Qualified Intermediary BEFORE you accept an offer on the sale property. Engaging the QI mid-closing is technically allowed but operationally risky. Names: Asset Preservation Inc, IPX1031, First American Exchange. Don't pick from a Google ad — pick from your CPA's vetted list.
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.
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.

The tax savings on a typical 1031 ($20-50k+ deferred) easily justify the QI cost and operational tension. The deal that makes the strategy expensive isn't the QI — it's being forced into a mediocre replacement property by a poorly-managed timeline. Plan the search before you sell.