1031 vs 1033 vs 121 vs 721 vs OZ vs Installment: The Real Estate Tax Deferral Map

The event picks the section long before the property does

Four questions settle most fact patterns in a minute: was the transfer voluntary, did anyone live in the property, is the buyer paying over time, and is the owner still alive. Everything else is detail.

A voluntary sale of a rental, a farm or a commercial building is section 1031 territory. A condemnation, a casualty or a threatened taking is section 1033, and it works differently enough that treating it as an exchange is a real error.

A property somebody lived in brings section 121 into the picture, and a note carried by the seller brings section 453. Those two can attach to the same sale as the first two, which is where the layering questions start.

What each section does, what it demands, and the clock it starts

Read this as a routing table rather than a ranking. Each line gives the trigger, the reinvestment demand and the deadline, and each links to the page that goes deep.

• Section 1031: voluntary exchange of real property held for productive use or investment; reinvest the whole sale price; 45 and 180 days; no stock, partnership interests or property held primarily for sale, and US and foreign real property are not like kind.
• Section 1033: involuntary conversion by condemnation, casualty or theft; replace within 2 years of the close of the first year in which gain is realized, 3 years for condemned real property held for business or investment, and 4 years for a principal residence in a federally declared disaster; no qualified intermediary, because you may receive the proceeds yourself.
• Section 121: sale of a principal residence owned and used as such for 2 of the last 5 years; excludes $250,000, or $500,000 on a joint return, once every 2 years; no exclusion for depreciation taken after May 6, 1997.
• Section 453: any sale with payments in a later year; gain follows the payments; recapture does not, and obligations above $5,000,000 carry the section 453A interest charge.
• Section 1400Z-2: any capital or qualified §1231 gain; invest the gain amount within 180 days of recognition; see the comparison with a 1031.
• Section 721: contribute real property or DST interests to a partnership for units; no gain at the contribution, but units are not real property and cannot be exchanged again.
• Section 1014: death resets basis to date-of-death value, which is the only one of these that removes the deferred gain rather than moving it.

Four stacks that are legal, and the order each one runs in

Rev. Proc. 2005-14 is the authority for the most common stack: on a home that later became a rental, apply the section 121 exclusion first, then section 1031 to the remaining gain, and the exclusion can also cover cash you take out of the exchange.

The second stack is one-way. A 1031 into DST interests can later roll into an operating partnership under section 721, which defers again but converts real property into units, so plan it as the last move rather than a middle one.

The third stack is a rescue: an exchange that fails still leaves a recognized gain, which can be moved into a qualified opportunity fund inside 180 days of the recognition date, or reported on the installment method if the closing and the payout straddle two tax years.

The fourth stack is the quiet one. A chain of exchanges held until death meets section 1014, and the gain that was deferred for decades simply disappears from the heirs' basis calculation.

Where the sections refuse to overlap, and the three errors that follow

The most expensive misunderstanding is treating a condemnation like a sale. Section 1033 does not need an intermediary, gives a longer window, and for condemned business or investment real property uses the like-kind standard of section 1033(g) instead of the narrower similar-or-related-in-service-or-use test; routing that money through an exchange agreement can shorten your deadline for no reason.

The second is assuming a carried note can ride inside an exchange. The note is not like-kind property, so it is boot, and the recapture under section 453(i) lands in the sale year even when no payment has been collected.

The third is expecting the same dollars to do two jobs. An opportunity fund takes an amount equal to the gain while a 1031 takes the entire sale price, so the two compete for the same proceeds rather than stacking on them. Section 121(d)(10) adds its own wall: property acquired in an exchange gets no exclusion for five years.

A hypothetical triage: one family, four assets, four different sections

Hypothetical, round numbers. A family is disposing of four things in the same year, and each one lands somewhere different.

The duplex with a $400,000 gain is a straightforward exchange, and DST interests can absorb an odd remainder. Twelve acres of the farm taken for a road widening is a section 1033(g) case: the award can sit in their own account, the replacement standard is like kind, and they have three years rather than 180 days.

The house they occupied from 2010 to 2019 and rented afterward keeps its exclusion, because section 121(b)(5) does not count periods after the last date of use as a principal residence as non-qualified use; the 2-of-5 test is what they have to watch, and the former home comparison explains the timing.

The vacant lot sold to a builder for 30% down and a five-year note is section 453, with the depreciation recapture taxed up front and the balance following the payments. Four assets, four sections, one tax year, and one CPA who needs all of it before the first closing.

Running the triage before anything is listed

The sequence that keeps options open is the same every time: date the events, pull basis and depreciation schedules, decide which sections are candidates, then write contracts that do not foreclose them.

Cooperation language, the identity of the selling taxpayer and the timing of the first closing are the three items that are cheap to fix in advance and expensive afterward. The pre-sale checklist covers the exchange side in detail.

None of this is advice for your situation; confirm the section, the election and the deadline with your CPA or attorney. We work alongside your existing advisers rather than replacing them, and Breakwater Exchange has spent more than two decades in 1031 brokerage with over a billion dollars of DST placements.

• Voluntary sale of investment real property, want to stay invested: section 1031.
• Government taking, threat of condemnation, fire or flood: section 1033, with the longer window.
• Anyone ever lived there: test section 121 first, then exchange the remainder.
• Buyer paying over years: section 453, and check the $5,000,000 line for the interest charge.
• Gain from stock, a business or a failed exchange: section 1400Z-2 is the only one that accepts it.
• Owner is elderly and the asset is the estate: section 1014 may beat every other line on this list.