By Brian Gass, Executive Director, Real Housing Reform Initiative
In 2021, Washington State passed a 7% capital gains tax on profits over $250,000 from the sale of stocks, bonds, and other investments. Supporters called it a historic step toward tax fairness. The Washington Supreme Court upheld it in 2023. Voters rejected an initiative to repeal it in 2024. In 2025, legislators added a 9.9% tier for gains over $1 million.
From implementation in 2022 through 2024, the tax has collected over $1.4 billion—far exceeding original projections.
But here's what the tax doesn't cover: real estate.
Washington's capital gains tax explicitly exempts the sale of real property. This isn't a technical oversight or narrow carveout. It's a fundamental design feature that reveals how Washington's tax system actually works.
The story of what gets taxed—and what doesn't—tells us more about Washington's revenue priorities than any legislative debate ever could.
Washington's capital gains tax is technically classified as an excise tax (not an income tax, which would violate the state constitution). It applies to individuals only, not businesses, though gains from pass-through entities flow through to owners.
Rate: 7% on adjusted long-term capital gains over the exemption threshold
Standard Deduction (2025): $278,000 (adjusted annually for inflation)
Effective: January 1, 2022
Example: You sell stock with $400,000 in long-term gains. You pay 7% on $122,000 ($400K - $278K) = $8,540.
Effective January 1, 2025 (retroactively), gains are now taxed at two tiers:
Example: You sell stock with $2 million in long-term gains after the standard deduction.
The tax applies to long-term capital gains (assets held over one year) from:
This is the crucial list:
The largest exemption by far? Real estate.
The capital gains tax was projected to generate around $400-450 million annually. Actual collections have significantly exceeded those estimates:
The higher-than-expected revenue reflects several factors:
With the new 9.9% tier on gains over $1M, collections for 2025 and beyond will likely exceed $600 million annually.
The exemption for real estate isn't some technical detail buried in subsection (c)(vii) of the statute. It's front and center, explicit, and absolutely intentional.
RCW 82.87.050(1): "The tax imposed in this chapter does not apply to the sale or exchange of real estate."
Why? Legislative materials and floor debate provide three official justifications:
Washington already taxes real estate transactions through the Real Estate Excise Tax (REET). State REET rates currently range from 1.28% to 3% depending on the sale price and use.
Legislators argued that adding capital gains tax on top of REET would be "double taxation" on the same transaction.
But this logic doesn't hold up. Washington taxes the same income multiple times routinely:
If double taxation were truly prohibited, most of Washington's tax system would be unconstitutional.
Real estate transactions involve complexities like 1031 exchanges, cost basis calculations for improvements, depreciation recapture, and allocation between land and structures.
Legislators claimed adding real estate to the capital gains tax would be too complex to administer.
This is demonstrably false. The IRS handles all these issues for federal capital gains tax on real estate. Washington's Department of Revenue already manages REET, which requires similar information. The state has the administrative capacity—it simply chose not to use it.
Polling showed that including real estate in the capital gains tax would tank public support. Homeowners—a massive and politically active constituency—opposed any new tax on home sales.
Exempting real estate made the tax politically viable. That's the real reason, and it's the only honest one.
But there's a deeper structural reason for the exemption, one rarely stated explicitly: protecting Washington's property tax base.
Property tax generates approximately $18 billion annually for state and local governments. It's Washington's second-largest revenue source after sales tax, funding schools, fire districts, libraries, roads, and most local services.
Real estate property tax revenue depends on two factors:
Heavy taxation of real estate transactions could theoretically reduce transaction velocity. If people face a 7-9.9% capital gains tax on top of REET, closing costs, and realtor fees, they might hold properties longer rather than sell.
Fewer transactions mean:
By exempting real estate from capital gains tax, Washington ensures nothing threatens the property tax base. The $400-600 million from taxing real estate gains isn't worth risking $18 billion in property tax revenue.
Let's look at who actually benefits from the real estate exemption.
A Microsoft engineer bought a home in Bellevue in 2015 for $800,000. In 2024, they sell it for $1.8 million.
Gain: $1,000,000
Federal capital gains tax (20% + 3.8% NIIT): $238,000
Washington capital gains tax: $0 (exempted)
Washington REET: $19,300 (1.28% on first $525K, 1.78% on next $1.475M)
Total Washington tax: $19,300
Now consider the same person selling $1 million in Microsoft stock:
Gain: $1,000,000
Standard deduction: $278,000
Taxable gain: $722,000
Washington capital gains tax: 7% = $50,540
The real estate sale saves them $31,240 in Washington taxes compared to an equivalent stock sale.
A property investor in Seattle bought a rental house in 2010 for $400,000. After improvements totaling $100,000, they sell it in 2024 for $1.2 million.
Gain: $700,000 (after basis adjustment for improvements)
Federal depreciation recapture: Subject to 25% federal tax
Federal capital gains: 20% + 3.8% NIIT on remaining gain
Washington capital gains tax: $0 (exempted)
Washington REET: $17,856
Now consider selling $700,000 in stock gains:
Taxable gain (after $278K deduction): $422,000
Washington capital gains tax: 7% = $29,540
The real estate exemption saves $29,540 in this case.
An investor owns shares in a Washington-based Real Estate Investment Trust (REIT). They sell those shares for a $500,000 gain.
Taxable gain (after $278K deduction): $222,000
Washington capital gains tax: 7% = $15,540
Wait—REITs invest in real estate. Why does this investor pay tax when the property investor doesn't?
Because the capital gains tax applies to the sale of REIT shares (intangible property), not the underlying real estate. This creates a bizarre asymmetry: direct real estate ownership is tax-advantaged, but indirect ownership through REITs is not.
When the capital gains tax was enacted in 2021, Microsoft CEO Satya Nadella made headlines by selling 840,000 shares worth approximately $285 million.
The timing was striking: November 2021, just weeks before the January 1, 2022 effective date.
Had Nadella waited until 2022, he would have faced:
By selling in 2021, he avoided the Washington tax entirely, saving approximately $20 million.
Nadella wasn't alone. Numerous tech executives, venture capitalists, and wealthy investors accelerated stock sales in late 2021. The state lost hundreds of millions in potential revenue from these pre-tax transactions.
But consider: if Nadella had sold a $285 million real estate portfolio in 2022 instead of stock, he still would have paid $0 in Washington capital gains tax.
The capital gains tax captures paper gains from selling Microsoft stock. But if those gains were instead realized through Bellevue real estate appreciation, they'd go entirely untaxed.
In November 2024, Washington voters faced Initiative 2109: a measure to repeal the capital gains tax entirely.
The campaign was fierce. Opponents argued the tax:
Supporters countered:
Result: Initiative 2109 failed 63.7% to 36.3%. Voters decisively chose to keep the capital gains tax.
But here's what's interesting: throughout the entire initiative campaign, neither side seriously proposed removing the real estate exemption.
Opponents could have argued: "If we must have this tax, at least make it fair—tax real estate gains too."
They didn't. Because wealthy real estate investors were funding the repeal effort. They wanted no capital gains tax at all—but failing that, they certainly didn't want real estate included.
Supporters could have argued: "The tax would be fairer and generate more revenue if it included real estate."
They didn't. Because homeowners—a vastly larger constituency than stock investors—would have turned against the tax immediately.
The real estate exemption is the third rail of Washington tax policy: touch it and die politically.
To fully understand the real estate exemption, you need to see how it fits into Washington's broader revenue structure.
Washington's major revenue sources:
The capital gains tax is tiny compared to property tax. But more importantly, it's designed not to threaten property tax revenue.
By exempting real estate, Washington ensures:
The capital gains tax was never intended to be a comprehensive tax on all capital appreciation. It's a supplemental revenue source that carefully avoids any industry or asset class where taxation might reduce a more valuable revenue stream.
Real estate is exempt because property tax is too important to risk.
Most states with income taxes DO tax real estate capital gains as ordinary income or at capital gains rates:
California: Real estate gains taxed as ordinary income (up to 13.3% state rate)
New York: Real estate gains taxed as capital gains (up to 8.82% state rate)
Oregon: Real estate gains taxed as ordinary income (up to 9.9% state rate)
Colorado: Real estate gains taxed at 4.4% flat rate
Washington is unusual in having a capital gains tax that explicitly exempts real estate. Most states treat all capital gains equally—if you tax stock sales, you tax real estate sales.
The capital gains tax was sold as tax fairness reform. Washington's tax system is highly regressive: the bottom 20% of earners pay 13.8% of income in taxes, while the top 1% pays just 4.1%.
The capital gains tax helps by extracting more from the highest earners. But it does so selectively, based on asset type rather than wealth level.
Two wealthy individuals with identical net worth:
Both are wealthy. Both have appreciated assets. But Washington taxes them differently based solely on what form their wealth takes.
This isn't fairness—it's asset-class favoritism. The tax system treats real estate investors better than stock investors, not because they're less wealthy, but because their wealth is held in a politically protected form.
The 2025 addition of a 9.9% tier on gains over $1 million signals where this is going: higher rates, more tiers, more revenue.
When Washington faces its next budget shortfall (and it will), legislators will look at capital gains tax options:
Option #4 is the obvious one: include real estate. It would generate hundreds of millions in additional annual revenue.
But it won't happen. Because the real estate exemption isn't a technical detail to be "fixed." It's a structural feature of Washington's tax system—a firewall protecting the property tax base that funds everything.
Washington's capital gains tax is a perfect case study in how the state's tax structure actually works:
The real estate exemption isn't a bug—it's the entire point. Washington will aggressively tax any form of wealth appreciation that doesn't threaten its $18 billion property tax base.
Stock sales, cryptocurrency, business interests—all fair game. Real estate? Untouchable.
When you understand this pattern, everything else makes sense: the aggressive B&O tech surcharges (covered in a previous post), the quick Wayfair implementation, the expansion of sales tax to services.
Washington protects its core revenue streams (sales tax, property tax) by taxing everything else as heavily as possible. The capital gains tax isn't about fairness—it's about finding revenue sources that won't disrupt the system.
Real estate got its exemption because $18 billion in property tax revenue is too valuable to risk for $400 million in capital gains collections.
The math is clear. The priority is clear. And that exemption isn't going anywhere.
Next in this series: The Millionaire Income Tax—9.9% on income over $1M, signed into law March 30, 2026, with the same protective exemptions baked in.
Sources:
Real Housing Reform Initiative
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