Capital Gains Tax on Selling a Rental Property in Washington State

Somewhere between the second lease renewal and a third tenant moving in, plenty of Washington landlords stop thinking about the eventual sale. Rent covers the mortgage, the property appreciates, and life is good. Then a CPA runs real numbers, and the capital gains tax on selling a rental property in Washington State turns into a bill nobody planned for. Your exit strategy needs to start years before the for-sale sign does.

What You’re Really Walking Into When You Sell

Plenty of sellers assume the profit math is simple: sale price minus what they paid, taxed like a stock gain. Rental property doesn’t work that way. That gap between what a seller assumes and what the IRS wants costs Washington property owners real money every year.

A longtime landlord in Spanaway called me a while back. He’d been renting out a three-bedroom property with a detached garage stuffed full of riding lawn equipment. Two agents over about fourteen months, two expired listings, not one solid offer. He was starting to wonder whether the property would ever sell at all. What bothered him most was that nobody had told him what his net proceeds would actually be once the taxes hit. When he finally saw a real number, all those separate tax events stacked on top of each other caught him off guard. Depreciation recapture tends to do that to people. We closed together, and knowing the tax math up front took most of the stress out of it.

Most guides discuss capital gains in a vacuum. Selling a rental here sets off several overlapping tax events, some federal and one very much local. Knowing which ones apply to you changes the whole conversation. If you’re a Washington landlord thinking about selling in 2026, start here.

In Washington, the median sale price for homes and condominiums was $650,000 in June 2026, according to the NWMLS market snapshot. At that price point, most sales here throw off a real gain. Getting the tax math right before you list matters.

Is the Profit From Selling a Rental Property Taxed as Income or Capital Gains?

Say an owner buys a duplex in Tacoma for $320,000, rents it out for eight years, then sells it at $575,000. Looks like a $255,000 gain at capital gains rates. The IRS slices that gain into at least two pieces, sometimes three, and taxes each piece differently.

Holding period sets the first split. Sell the property within a year of purchase, and the gain is short-term and taxed at ordinary income tax rates. Hold it longer than a year, and the gain is long-term and taxed at the lower capital gains rate. One day on either side of that line changes the rate on your whole appreciation.

Rental property adds a third slice most owners never budget for: depreciation recapture. Every year you wrote depreciation off against your rental income, the IRS was quietly lowering your cost basis in the property. At sale, it wants that benefit back at its own rate, separate from your capital gains rate. So is rental profit income or capital gains? It depends on which portion you mean, and there are usually at least two portions in play.

A rental sale has more moving parts than a stock sale, or even the sale of the house you live in. Sellers who treat it as one simple number tend to come up short when the bill arrives.

What Is Capital Gains Tax on Rental Property in Washington?

Your adjusted basis is where the capital gains tax calculation starts, not the figure on your old closing statement. Adjusted basis means your original purchase price plus closing costs and improvements, minus the depreciation deductions you claimed on the property along the way. That resulting number, the foundation for calculating capital gains when selling rental property, is rarely what owners expect.

Buy a rental property in Renton for $400,000, spend $30,000 on a kitchen remodel, and write off $60,000 of depreciation over ten years. Your basis isn’t $400,000 anymore. It’s about $370,000. Your taxable gain gets measured against the lower figure.

Capital gain equals net sale price minus adjusted basis. In a market like Kirkland or Redmond, where values climbed hard over the past decade, that spread can be jarring. Rental properties in Washington State are not eligible for the primary residence exemption, so every dollar is on the table.

Keeping receipts for capital improvements pays off right here. A new roof, a full HVAC replacement, and an added bathroom: each one lifts your basis and cuts your taxable gain dollar for dollar. Sellers who never documented improvements leave real money behind, and I’ve watched more than one work that out far too late in escrow. Dig out the property records from your original closing before you price anything.

Federal Capital Gains Tax Rates That Apply to Washington Rental Property

Sellers who’ve held a property for a decade usually ask one question: What rate am I paying? Honest answer, at least two rates, applied to two different pieces of your gain.

For 2026, long-term capital gains rates are still 0%, 15%, or 20%, depending on your taxable income. Depreciation recapture is subject to a 25% tax rate, and the 3.8% Net Investment Income Tax applies to higher earners. Zero percent sounds great. Washington rental sellers who’ve held for years and have other earnings rarely reach it, and most land at 15% on the appreciation portion.

Those rates don’t take turns. A single property closing can carry the recapture rate on one slice and a lower long-term rate on the appreciation. The surcharge stacks on both if you clear the threshold. Sellers who plug one rate into a spreadsheet and call it done usually underestimate the tax bill.

That 3.8% Net Investment Income Tax is the one investors forget. It applies once the modified adjusted gross income exceeds $200,000 for a single filer or $250,000 for a married filer filing jointly. Those two thresholds have never been indexed for inflation, so a large rental sale can push you across the line mid-year. The surcharge sits on top of the capital gains rate you already owe.

Short-term capital gains, meaning assets held for one year or less, are taxed as ordinary income at 2026 federal rates ranging from 10% to 37%. Selling a rental you’ve owned for eleven months is an expensive way to exit, because your ordinary rate applies to the whole gain. Investors who buy distressed property on an aggressive timeline miss this, and I’ve seen it erase a margin that looked solid on the spreadsheet.

Does Washington’s State Capital Gains Tax Apply to Rental Property Sales?

Washington’s state capital gains tax does not apply to real estate sales. Full stop.

Under RCW 82.87.050, gains from the sale of real estate, including rental houses, commercial buildings, and raw land, are exempt. Sell a $3 million apartment building in Belltown, and Washington state collects no capital gains tax, though your CPA should confirm how it applies in your situation.

There is a tiered structure now. SB 5813 added a 9.9% tier on gains above $1 million, signed in May 2025 and retroactive to January 1, 2025. It applies to stock, business interests, and similar investment assets, not to property transfers. Sellers hear 9.9% in the news coverage and assume it applies to their own rental, which is a fair mix-up. It doesn’t.

One more piece of news worth heading off. Washington enacted a separate tax on income above $1 million in March 2026, and it starts in 2028. Long-term capital gains from real estate are pulled out of the base they reach, so a rental sale stays outside it. Challenges to it are still moving through the courts, so revisit this one with your CPA rather than plan around it now.

Because no state tax touches the gain itself, the sell-or-hold question on a Washington rental is a federal calculation. Compare that to California, where a state rate sits on top of the federal one, and Washington sellers come out well ahead. The state still takes its cut at closing, just through a different tax.

How Washington’s Real Estate Excise Tax (REET) Works on Rental Sales

Leave REET out of your net proceeds math, and you’ll have an uncomfortable conversation with your escrow officer at closing. It’s a transfer tax rather than a tax on profit, so it lands whether you profited or not.

Washington’s real estate excise tax hits most sales of real property, and the seller pays it at closing. Graduated state rates plus a local rate are calculated based on the sale price, and the amount must be paid before the transfer can be recorded.

Four rates stack by price band. Sellers owe 1.1% on the first $525,000 of the sale price, 1.28% on the portion up to $1,525,000, 2.75% on the portion up to $3,025,000, and 3% on anything above that. With the statewide median at $650,000, most Washington rentals clear the first tier well before the sale price runs out.

Most cities in King and Snohomish County add another 0.50% on top. On a $1 million Seattle sale, state and local excise tax together run about $16,900, wired out of your proceeds before you ever see a check. Sell to a company that buys houses in Seattle, WA, and that same line still lands on your closing statement.

Sellers here think of Washington as a low-tax state, and on income, that’s true. Transfer taxes are where the state makes up the difference. Most of Washington’s REET revenue goes to the general fund. Slices go to public works loans for local governments and to the education legacy trust account. The REET line on your closing statement is how you personally fund all of that.

Selling to a cash buyer like Serious Cash Offer won’t exempt you from REET. It does get you out of agent commissions, which run roughly 5% to 6% statewide. On a $600,000 rental sale, the commission you never pay is bigger than the entire excise tax bill.

What Is Depreciation Recapture and How Much Will You Owe?

For years, I assumed depreciation recapture only mattered if you’d claimed deductions aggressively. The IRS doesn’t care whether you claimed them at all.

Depreciation on residential rental property runs for 27.5 years, on a straight-line basis, and those write-offs pile up quietly. Skip them on every return you ever filed, and your basis still drops as though you took them. You owe recapture either way. The rule is keyed to depreciation allowed or allowable, so your tax return history won’t get you off the hook.

Recapture of residential rental property is taxed up to 25% at the federal level as unrecaptured Section 1250 gain, and any remaining gain is long-term capital gain at preferential rates. That ceiling applies only to the depreciation slice, not to the entire gain. Own a rental property in Bellevue for fifteen years and claim $90,000 in depreciation. That $90,000 slice goes first, up to 25%, before a dollar of appreciation is taxed at the lower long-term rate.

It shows up on Form 4797 Part III, then on the Unrecaptured Section 1250 Gain Worksheet in the Schedule D instructions. Most sellers meet those forms when a finished return lands in their inbox, which is the worst possible moment to learn what happened. Run your depreciation numbers before you price the rental for sale.

How to Defer or Reduce Capital Gains Tax When Selling Rental Property in Washington

One woman I worked with was settling her father’s affairs after he moved into assisted living in Edmonds. The family had gathered at the house to sort through decades of belongings. Next door sat a rental property that had thrown off steady income for years. She had two properties to sell and no bandwidth for a tax strategy in the middle of it.

Her situation is ordinary. Tools for reducing capital gains tax on a rental sale do exist, and nearly all of them require planning that happens before you sign a listing agreement.

Start with the 1031 like-kind exchange. Reinvest the proceeds into a replacement investment property, and your capital gains tax liability gets deferred rather than paid. You’ll need a Qualified Intermediary holding the money. Written identification of a replacement property goes in within 45 days of closing. You close on it within 180 days, or by your return due date, whichever comes first. Both clocks start the day you close, and missing either one collapses the deferral.

Tax-loss harvesting helps if you’re also holding losers in a brokerage account. Selling those to offset capital gains dollar for dollar pulls down your net taxable gain in the year of the sale.

An installment sale spreads the recognition of gain over several tax years, with the buyer paying over time rather than all at once. You take on counterparty risk. For a seller who doesn’t need every dollar immediately, it keeps each year’s taxable income under the thresholds that matter.

Going direct to a local cash buyer like Serious Cash Offer closes faster and cleaner than a traditional listing, which matters when tax-year timing is the whole point. Median days on market in Washington sat at 14 days in June 2026, and a conventional listing can still slide from one tax year into the next. Cash buyers close on your calendar, not the market’s. Owners on the other side of the state can work with our cash house buyers in Vancouver, WA, on the same timeline.

If you want your numbers straight before making any decisions, Serious Cash Offer regularly works with Washington rental property sellers. We can walk you through a direct sale next to a traditional listing.

Frequently Asked Questions

How Do I Avoid Capital Gains Tax on the Sale of a Rental Property?

Avoiding it outright is rarely realistic, though real deferral is very doable. A 1031 exchange rolls your proceeds into a replacement investment property, pushing the tax bill down the road. That holds as long as you hit the IRS rules on identification and closing timelines. You can also shrink the gain itself by getting your adjusted basis right, including every capital improvement you ever paid for. Installment sales help, too, and so does choosing which tax year the sale closes in.

How Much Capital Gains Tax Would I Owe on a $300,000 Gain?

Depends on your income and how that gain is split between depreciation recapture and appreciation. The recapture portion tops out at a 25% federal rate. Appreciation above it gets taxed at 0%, 15%, or 20%, based on your taxable income for the year. Modified adjusted gross income over $200,000 (single) or $250,000 (married filing jointly) adds the 3.8% Net Investment Income Tax on the net investment gain. Run the full calculation with a CPA before you close to get a real number instead of a rough estimate.

Do I Have to Pay Capital Gains Tax on the Sale of My Home in Washington?

For a primary residence, federal law lets you exclude up to $250,000 of gain if you’re single, or up to $500,000 married filing jointly. You have to have lived in the property for at least two of the last five years. Washington’s state capital gains tax doesn’t apply to real estate sales at all, no matter how large the gain is. Rental properties don’t qualify for the primary residence exclusion, leaving the entire gain exposed to federal capital gains and recapture taxes.

How Do I Avoid Washington’s State Capital Gains Tax on a Rental Sale?

No strategy needed for this one. Real estate sales are exempt from Washington’s state capital gains tax under RCW 82.87.050, including rental properties, commercial buildings, and land. What Washington sellers do owe on a rental sale is federal capital gains tax, federal depreciation recapture, and the state’s Real Estate Excise Tax (REET). Plan around those three numbers.

Working through the tax math on a Washington rental sale takes time, and what you decide before listing matters more than anything you do afterward. If you’d like to talk through your options, including whether a direct sale is a better fit for your situation than a traditional listing, contact us. No pressure, no obligation.

---

---