A 1031 exchange lets a real estate investor sell an investment property and roll the proceeds into another one without paying federal capital gains tax at the time of the sale. That much is true everywhere in the country. What's different if you're investing in Washington is what happens on the state side — and it changes how you should think about whether an exchange is even necessary.
The Washington Wrinkle Most Investors Don't Know About
Washington has a state capital gains tax, but it explicitly exempts real estate. It doesn't matter how long you held the property, whether you lived in it, where it's located, or whether it's residential, commercial, or raw land — a direct sale of real estate owes Washington no capital gains tax. This exemption extends to real estate held through an LLC or other privately held entity too, to the extent the gain is attributable to real estate the entity owns directly.
That means an investor in a state like California, which does tax real estate gains at the state level, has two separate reasons to consider a 1031 exchange: deferring federal tax and deferring state tax. In Washington, there's only one reason. Your federal capital gains tax and depreciation recapture are the entire calculation. That doesn't make a 1031 exchange less valuable here — federal tax alone on a large gain is still significant — but it does mean the decision is simpler than in states layering their own tax on top.
The Two Deadlines That Don't Move
If you decide an exchange makes sense, the mechanics are unforgiving. From the day your relinquished property's sale closes, you have exactly 45 calendar days to identify replacement property in writing, and 180 calendar days total to close on it. These are calendar days, not business days — weekends and holidays don't extend anything, and the IRS doesn't grant extensions outside of a federally declared disaster affecting the property's area.
There's a second constraint that catches people off guard: the 180-day window can't extend past your tax return due date for the year of the sale, including extensions. If you sell late in the year — say, November — and don't file for a tax extension, you could lose real days off your 180 simply because your return is due before day 180 arrives. Filing the extension is a five-minute task that protects the full window.
Thinking about selling a rental or investment property? Run the gain and the depreciation recapture before you list, while the exchange is still an option.
The Qualified Intermediary You Can't Skip
You cannot personally hold the sale proceeds at any point during the exchange. The moment you have what the IRS calls constructive receipt of the money, the exchange fails and the sale becomes fully taxable. A qualified intermediary holds the funds instead, prepares the exchange documents, and transfers money directly to close on the replacement property.
Not just anyone can serve as your QI. Your CPA, attorney, real estate agent, or broker cannot act as your qualified intermediary if they've served you in that capacity within the prior two years. Family members and entities you or your family control more than 10% of are also disqualified. This trips people up who assume they can save a step by using someone they already work with — vet a genuinely independent QI before you're under time pressure, not after your sale has already closed.
What Actually Qualifies as Like-Kind
Since 2018, Section 1031 only applies to real property — personal property exchanges were eliminated entirely. Within real property, though, "like-kind" is interpreted broadly. Almost any U.S. real estate held for investment or business purposes is considered like-kind to any other. A rental house can be exchanged for a commercial building, raw land, or a multifamily property, as long as both sides are held for investment or business use.
What doesn't qualify: your primary residence, since it isn't held for investment or business purposes. A primary residence sale may qualify for a different tax benefit — the Section 121 home-sale exclusion — but not a 1031 exchange. Property held primarily as inventory for resale, such as a property a dealer is actively flipping, also doesn't qualify.
The Boot Problem
"Boot" is any value you receive in the exchange that isn't like-kind real estate — cash left over, or a reduction in mortgage debt on the replacement property compared to what you had on the relinquished property. Boot is taxable in the year of the exchange, even though the rest of the exchange is deferred.
The practical rule to avoid unintentional boot: your replacement property should be equal to or greater in value than what you sold, and your replacement debt should be equal to or greater than what you paid off. If you sell a property with a $400,000 mortgage and buy a replacement with only a $250,000 mortgage, that $150,000 difference is treated as boot and taxed, even if every dollar went back into real estate.
When a 1031 Exchange Actually Makes Sense
Given the Washington-specific point above, the calculation for a Washington investor comes down to two things: how large the federal capital gain and depreciation recapture would be on an outright sale, and whether you actually want to keep capital deployed in real estate rather than diversify or cash out.
If you're planning to hold real estate long-term regardless, and you're selling one property specifically to reposition into another, a 1031 exchange defers a real federal tax bill with no Washington-specific downside to weigh against it. If you're selling because you want to exit real estate as an asset class — moving into stocks, a business, or simply cashing out — a 1031 exchange doesn't help, since it only works if you're buying more real estate with the proceeds.
For investors with significant accumulated depreciation on a property, that recapture can be a large share of the federal tax bill, and it's worth having someone actually run both numbers — the gain and the recapture — before deciding whether the exchange machinery is worth the deadlines and the qualified intermediary fees.
Running the real numbers — the federal gain, the depreciation recapture, and whether reinvesting even makes sense for where you're headed — is the conversation worth having before the 45-day clock starts, not after. Real estate investors across King and Snohomish County bring us exactly this question before they list a property, not after it's already under contract.