1031 Exchange Calculator

See exactly how much tax you defer by doing a 1031 exchange — depreciation recapture, capital gains, minimum replacement value, and the 45/180-day timeline.

Property Sale Details

$
$
$
$
%

Tax Rates

%
%
%
%

Replacement Property (optional)

$

Leave blank to just see the minimum required replacement value. Enter a value to calculate boot (taxable portion).

Frequently Asked Questions

1031 Exchanges: The Complete Guide

Everything you need to know about 1031 like-kind exchanges, tax deferral rules, timelines, and common pitfalls.

A 1031 exchange (named after Section 1031 of the Internal Revenue Code) is a tax strategy that allows real estate investors to defer capital gains taxes when they sell an investment property and reinvest the proceeds into another "like-kind" property. Instead of paying taxes at the time of sale, the tax liability carries forward to the replacement property.

How the deferral works:

  • You sell a property (the "relinquished" property) and instead of pocketing the proceeds, they go to a Qualified Intermediary (QI) who holds the funds in escrow.
  • You identify and purchase a replacement property within strict timelines (45 days to identify, 180 days to close). The QI releases the funds directly to the replacement property closing.
  • Your cost basis transfers from the old property to the new one. You don't owe taxes until you eventually sell the replacement property in a taxable transaction.

What gets deferred: Both the capital gains tax and the depreciation recapture tax are deferred. This means the entire gain — including the portion attributable to accumulated depreciation (taxed at the 25% Section 1250 recapture rate) and the remaining capital gain (taxed at your long-term capital gains rate) — is postponed.

Key insight: A 1031 exchange is a deferral, not an elimination. You're kicking the tax bill down the road. However, many investors chain multiple 1031 exchanges over a lifetime, deferring taxes indefinitely. At death, heirs receive a stepped-up basis, effectively eliminating the deferred gains entirely — which is why some call this the "swap till you drop" strategy.

The term "like-kind" is far broader than most people expect. It does not mean you must exchange one apartment building for another apartment building. The IRS defines like-kind broadly to include virtually any real property held for productive use in a trade or business or for investment.

Properties that qualify:

  • Rental properties — Single-family rentals, multifamily apartments, and any other residential investment property.
  • Commercial properties — Office buildings, retail centers, warehouses, industrial facilities.
  • Raw land — Vacant land held for investment, even if undeveloped, can be exchanged for an improved commercial building and vice versa.
  • Mixed-use properties — Buildings with both commercial and residential components.
  • Oil, gas, and mineral rights — Certain natural resource interests qualify.

Properties that do NOT qualify:

  • Your primary residence — The property you live in is excluded (but a portion may qualify if converted to a rental before sale).
  • Property held for resale (flips) — Fix and flip inventory is considered dealer property, not investment property, and does not qualify.
  • Foreign real estate — The relinquished and replacement properties must both be located within the United States. Since the Tax Cuts and Jobs Act (TCJA) of 2017, personal property (equipment, vehicles, artwork) no longer qualifies.
  • Stocks, bonds, or partnership interests — Securities and financial instruments are explicitly excluded.

The practical takeaway: You can exchange an apartment complex in Texas for vacant land in Montana, or a small retail strip center for a large industrial warehouse. The "like-kind" requirement is about the nature of the asset (real property held for investment), not its specific use or location.

The 45-day identification rule is one of the two critical deadlines in a 1031 exchange. Starting from the day you close on the sale of your relinquished property, you have exactly 45 calendar days to formally identify potential replacement properties in writing.

Identification rules:

  • The 3-property rule — The most common approach. You can identify up to 3 replacement properties, regardless of their total value. You must ultimately close on at least one of them.
  • The 200% rule — You can identify more than 3 properties, as long as their total combined fair market value does not exceed 200% of the value of the relinquished property.
  • The 95% rule — You can identify any number of properties regardless of value, but you must close on at least 95% of the total value identified. This rule is rarely used because it leaves almost no flexibility.

How to properly identify: The identification must be in writing, signed by you, and delivered to the Qualified Intermediary or another party involved in the exchange (not your attorney or accountant). The properties must be unambiguously described — typically by address or legal description.

If you miss the 45-day deadline: The entire exchange fails. There are no extensions, no exceptions, and no do-overs. The IRS treats the transaction as a standard sale, and you owe full capital gains tax plus depreciation recapture tax on the entire gain. The only narrow exception is an IRS-declared disaster zone, which may extend deadlines for affected taxpayers.

Pro tip: Start looking for replacement properties before you close on the sale, not after. The 45-day clock starts ticking the moment you close, and finding the right property under time pressure leads to bad decisions.

The 180-day closing rule is the second critical deadline. You must close on at least one of the replacement properties you identified within 180 calendar days of selling the relinquished property (or by the tax return due date for the year of the exchange, including extensions — whichever comes first).

Key details:

  • The 180-day period runs concurrently with the 45-day identification period. So you really have 135 days after the identification deadline to close. Many investors mistakenly think they have 180 days after the 45-day window, which is incorrect.
  • Tax return due date trap: If you sell in October and your tax return is due the following April 15, you only have about 165 days — not 180. File an extension to get the full 180 days.
  • No extensions: Like the 45-day rule, the 180-day deadline is strict. No extensions for market conditions, financing delays, or title issues. The only exception is a federally declared disaster.

What counts as "closing": You must receive title to the replacement property (or, in the case of new construction, receive substantially all of the replacement property) within the 180-day window. Simply being under contract is not enough.

Practical advice:

  • Always file a tax extension for the year of the exchange to ensure you get the full 180 days.
  • Build a timeline buffer. Aim to close by day 150, not day 179. Real estate closings are unpredictable, and a single title issue or lender delay can kill the exchange.
  • Have a backup plan. If your first-choice replacement property falls through, having a second identified property can save the exchange.

Depreciation recapture is the IRS mechanism for "clawing back" the tax benefit you received from depreciating a property. When you sell a rental property, any gain attributable to depreciation you previously claimed is taxed at a special rate of 25% (under Section 1250), rather than the standard long-term capital gains rate.

How it works in a regular sale:

  • Suppose you bought a property for $300,000 and claimed $80,000 in depreciation over your ownership period. Your adjusted basis is now $220,000.
  • You sell for $500,000 (net of selling costs: $470,000). Your total gain is $470,000 − $220,000 = $250,000.
  • Of that $250,000 gain, $80,000 is depreciation recapture (taxed at 25%), and the remaining $170,000 is capital gain (taxed at your long-term rate — typically 15% or 20%).
  • The recapture tax alone on $80,000 at 25% is $20,000 — a significant hit that many investors don't anticipate.

How a 1031 exchange handles recapture: In a properly structured 1031 exchange, both the capital gain and the depreciation recapture are fully deferred. The depreciation from the old property "carries over" to the new property's basis. When you eventually sell the replacement property in a taxable transaction, you'll owe recapture on all the accumulated depreciation from both properties.

Why this matters: Depreciation recapture is often the most surprising part of selling a rental property. Investors who have held property for 10-20+ years can accumulate hundreds of thousands of dollars in depreciation. The 25% recapture rate means this component alone can create a five-figure or six-figure tax bill that a 1031 exchange defers entirely.

"Boot" is the tax term for any value received in a 1031 exchange that is not like-kind property. Boot is immediately taxable, even if the rest of the exchange qualifies for deferral. Understanding boot is essential because many investors accidentally trigger it.

Common types of boot:

  • Cash boot — If you receive any cash from the exchange proceeds (even temporarily), that cash is taxable. This is why a Qualified Intermediary must hold the funds; if you touch the money, it becomes boot.
  • Mortgage boot — If the mortgage on your replacement property is smaller than the mortgage on the relinquished property, the difference is treated as boot. For example, if you had a $200,000 mortgage on the old property and only take on a $150,000 mortgage on the new one, the $50,000 difference is mortgage boot.
  • Non-like-kind property — If you receive personal property (furniture, equipment) as part of the exchange, its value is boot.

How to avoid boot: The replacement property must be of equal or greater value than the net sale proceeds of the relinquished property, and you must reinvest all the equity. Any shortfall creates boot.

Partial exchanges: If you cannot find a replacement property of equal value, you can still do a partial 1031 exchange. The portion of the proceeds reinvested in like-kind property is deferred, and the remainder (the boot) is taxed. For example, if your net proceeds are $400,000 and you buy a replacement property for $350,000, you defer tax on $350,000 and pay tax on the $50,000 boot.

Pro tip: Many investors trade "up" in a 1031 exchange — selling a smaller property and buying a larger one — specifically to avoid boot and to grow their portfolio tax-deferred.

A reverse 1031 exchange is a variation where you acquire the replacement property before selling the relinquished property. This is the opposite of a standard "forward" exchange, where you sell first and buy second.

When a reverse exchange makes sense:

  • You found the perfect replacement property but haven't sold your current property yet. In competitive markets, waiting to sell first could mean losing the deal.
  • You want to avoid the 45/180-day time pressure of finding a replacement after selling. By buying first, you eliminate the risk of missing the identification deadline.
  • Market conditions favor buying now — perhaps interest rates are about to rise, or you have an off-market opportunity that won't wait.

How reverse exchanges work:

  • An Exchange Accommodation Titleholder (EAT) takes title to either the replacement property or the relinquished property. You cannot hold title to both properties simultaneously.
  • You must sell the relinquished property within 180 days of acquiring the replacement property.
  • The same 45-day identification rules apply (you must identify the property being sold within 45 days of acquiring the replacement).

Downsides of reverse exchanges:

  • Significantly more expensive — EAT fees, additional legal costs, and financing complexity can add $5,000-$15,000+ to the total cost.
  • Financing is harder — You may need to finance the replacement property before receiving proceeds from the sale, requiring bridge loans or additional capital.
  • Not all QIs handle reverse exchanges — The process requires specialized expertise.

Reverse exchanges are most common among experienced investors doing larger transactions where the cost and complexity are justified by the tax savings and strategic flexibility.

A 1031 exchange is powerful, but it's not always the right move. There are several scenarios where paying the tax now may actually be the smarter financial decision.

Situations where a 1031 exchange may not make sense:

  • Your gain is small — If the total tax deferred is only a few thousand dollars, the cost and complexity of a 1031 exchange (QI fees, legal costs, rushed timelines) may exceed the benefit. The minimum exchange typically costs $1,000-$3,000 in QI fees alone.
  • You're in a low tax bracket — If your total income puts you in the 0% long-term capital gains bracket (single filers under ~$47,000 in 2024), you may owe no federal capital gains tax anyway. The 25% depreciation recapture rate still applies, but the overall tax savings may not justify the complexity.
  • You want to exit real estate entirely — A 1031 exchange requires reinvesting in real estate. If you want to diversify into stocks, bonds, or other asset classes, you'll need to sell and pay the tax.
  • You're being forced into a bad replacement property — The worst outcome is buying an overpriced or poorly-located replacement property just to meet the 45/180 day deadlines. A bad investment that saves $50,000 in taxes but loses $100,000 in value is still a $50,000 loss.
  • You have significant losses to offset — If you have capital losses from other investments that can offset the gain, you may not need a 1031 exchange. The net tax bill after loss harvesting may be minimal.
  • You expect to be in a lower bracket soon — If you're retiring next year and your income will drop significantly, it may be worth waiting to sell at lower rates rather than deferring into a future where rates could be higher.

The golden rule: Never let the tax tail wag the investment dog. A 1031 exchange should enhance a good investment strategy, not drive it. If the only reason you're buying a replacement property is to avoid taxes, step back and reconsider.

Ready to model your replacement property's cash flows?