Capital Gains Tax on Home Sales: Portland vs. Vancouver

Do you pay capital gains tax when you sell a home in Portland or Vancouver?

Most sellers don't. If the home was your primary residence for at least two of the last five years, federal law lets you exclude up to $250,000 of gain if you file single and up to $500,000 if you're married filing jointly — and in the $400,000 to $800,000 range that covers most of the Portland-Vancouver metro, that exclusion wipes out the entire bill. Where it gets expensive is the long-tenured owner whose gain runs past the cap. At that point the side of the river you live on matters a lot: Oregon taxes the excess as ordinary income and Portland stacks two local income taxes on top of it, while Washington has no income tax at all and specifically exempts real estate from its capital gains excise tax.

By Rick Sadle | August 27, 2026

This is the question I get more than almost any other from sellers who've owned their home a long time, and it's the one people are most likely to get wrong — usually in the direction of panic.

Here's the thing that trips everyone up: your gain is not your sale price minus what you paid. That's the number people run in their head, and it's almost always too high.

How the gain is actually calculated

Your taxable gain starts with what you net, not what you sell for, and it's measured against an adjusted basis that includes the money you've put into the house over the years.

Take a couple in Sellwood-Moreland who bought in 1999 for $172,000 and are selling this year at $825,000. On paper that looks like a $653,000 gain and a terrifying tax bill. Run it properly:

• Purchase price: $172,000
• Capital improvements over 27 years (kitchen, roof, addition, systems): $78,000
• Adjusted basis: $250,000
• Sale price: $825,000
• Selling costs at roughly 7.5% (commissions, escrow and title fees, recording): $61,875
• Amount realized: $763,125
• Actual gain: $513,125

Subtract the $500,000 married exclusion and their taxable gain is $13,125. Not $653,000. That's the whole ballgame for most sellers in this market.

Two things did the heavy lifting there, and both get overlooked. Capital improvements raise your basis, which is why I tell every long-term owner to go dig up their receipts before we list — a permitted addition or a full kitchen remodel from 2012 is real money against your gain. And selling costs come off the top, which is a big reason the real number lands well under what people fear. If you want the full picture of what those costs run on each side of the river, I broke that down in a separate post on the real cost difference between selling in Vancouver and Portland.

Where it actually bites — and where Oregon and Washington split

The exclusion is per sale, not per person, and a single filer only gets half of what a married couple gets. That's where the real exposure sits in this market: the widowed owner, the never-married owner, the person who's been in the same Alameda or Laurelhurst house since the nineties.

Say a single filer bought in 1994 for $135,000, put $65,000 into it, and sells at $850,000. Adjusted basis $200,000, selling costs $63,750, amount realized $786,250. Gain of $586,250, minus the $250,000 single exclusion, leaves a taxable gain of $336,250.

Now the address matters.

A seller in Portland (Multnomah County) faces a stack: federal long-term capital gains at 15%, the 3.8% net investment income tax, Oregon income tax at the top 9.9% rate, the Metro Supportive Housing Services tax at 1%, and the Multnomah County Preschool for All tax at 1.5% to 3% depending on where the income lands. Both local taxes are calculated off Oregon taxable income, which is exactly where a big home-sale gain shows up. On $336,250, that stack runs roughly $105,000 to $110,000. Oregon charges no transfer tax, so nothing further at closing.

A seller in Vancouver (Clark County) pays the same federal 15% and 3.8% — about $63,000 — and then stops. Washington has no personal income tax, and while the state does have a 7% capital gains excise tax, real estate is specifically exempt from it under RCW 82.87.050. What Washington does charge is the real estate excise tax at closing: on an $850,000 sale that's $9,935 in state REET plus 0.50% local, or about $14,185, bringing the all-in to roughly $77,400.

Same house, same gain, roughly $28,000 to $33,000 of difference.

Two honest qualifiers on those figures. They're marginal-rate illustrations, not a tax return — Oregon allows a federal tax subtraction that can pull the Oregon piece down, and your actual liability depends on your total income for the year, not just the gain. And I'm a broker, not a CPA. Numbers this size are exactly when you want an accountant in the room before you sign a listing agreement, not after closing.

What about the bill that would eliminate this?

You've probably seen the headlines. The No Tax on Home Sales Act (H.R. 4327) would remove the $250,000 and $500,000 caps entirely and let you exclude unlimited gain on a principal residence. Administration officials floated support for the idea again this month, which is why it's back in your feed.

Here's where it actually stands: the bill was introduced July 10, 2025, and referred to the House Committee on Ways and Means. As of today it has not passed the House, has not passed the Senate, and is not law. It would apply only to sales that happen after it becomes law, and only to principal residences — not second homes, not rentals, not flips.

So the honest answer to "should I wait?" is that you'd be delaying a sale on legislation sitting in committee with no floor vote scheduled. I'm not going to tell you what Congress will do. What I will tell you is that I've watched sellers hold a house for two years waiting on a rate change or a tax change and end up worse off on carrying costs, condition, and market timing than the tax would ever have cost them. Decide on your life and your numbers, not on a bill.

The moves that actually help

If your gain looks like it'll run past the exclusion, these are worth real money and none of them require a change in the law:

• Rebuild your basis. Permits, contractor invoices, and receipts for capital improvements all raise it. Repairs don't count, but improvements do, and 25 years of them adds up fast.
• Check the widow's window. If your spouse died, you may be able to claim the full $500,000 exclusion if you sell within two years of the death and meet the other conditions — and you may also have a step-up in basis on their share. This one is worth thousands and people miss it constantly.
• Know the partial exclusion. If you're selling before the two-year mark because of a job relocation, a health issue, or another qualifying unforeseen event, you may still get a prorated exclusion instead of nothing.
• Watch the timing across the year. Because Oregon, Metro, and Multnomah County all key off taxable income, the year you close can change what you owe. That's a conversation for your CPA, but the listing timeline is mine.
• If it's a rental, different rules apply. Investment property doesn't get the Section 121 exclusion, and depreciation recapture comes into play — but a 1031 exchange may let you defer. Different post, different math.

The first real step is knowing what the house will actually sell for, because every number above depends on it. If you're working off a Zestimate, that gap between an automated estimate and a real market analysis can swing your gain calculation by six figures.

Frequently Asked Questions

Do I have to report the sale if my whole gain is excluded?

Often no. If your gain is fully excluded and you don't receive a Form 1099-S, you generally don't have to report the sale on your return. If you do get a 1099-S, report it. Your CPA will confirm which applies to you.

Does Washington's 7% capital gains tax apply when I sell my Vancouver home?

No. Washington's capital gains excise tax specifically exempts gains from the sale of real estate under RCW 82.87.050. You'll still owe the real estate excise tax (REET) at closing, which is a separate tax on the sale price, not on your profit.

Do I pay transfer tax when I sell in Portland?

No. Oregon has no statewide transfer tax, and Multnomah, Clackamas, and Clark counties don't charge one either. Washington County, Oregon is the sole grandfathered exception at 0.1%. Full details are in my Portland vs. Vancouver property tax breakdown.

Can I use the exclusion more than once?

Yes, but not more than once every two years. If you claimed the exclusion on another home sale within the two years before this sale, you don't meet the look-back requirement.

I inherited the house. Does any of this apply?

Mostly no, and the news is usually good — inherited property typically gets a stepped-up basis to fair market value at the date of death, which often eliminates the gain entirely. I covered that situation in detail in my post on selling an inherited house in Oregon and Washington.

The bottom line

If you've owned a typical Portland or Vancouver home for a normal stretch of time and you're married, the exclusion almost certainly covers you and this is a non-issue. If you're a single filer who's been in the same house since the nineties, it's worth running the real numbers before you list — and worth knowing that the same gain costs meaningfully less on the Washington side.

Either way, the calculation starts with an accurate sale price and an honest basis, and that's work you do before the sign goes in the yard, not after. If you want to sit down and run your actual numbers, reach out anytime — I'll walk you through what the sale looks like end to end, and tell you straight if you need a CPA in the conversation.

This post is general information about how these taxes work, not tax or legal advice. I'm a licensed real estate broker, not a CPA or an attorney. Tax outcomes depend on your full financial picture, and you should confirm your specific situation with a qualified tax professional before you make a decision to sell.

Sources

• IRS Publication 523, Selling Your Home — exclusion amounts, ownership, residence, and look-back tests
• City of Portland Revenue Division — Metro Supportive Housing Services and Multnomah County Preschool for All rates and thresholds
• Washington Department of Revenue — graduated REET rate structure
• RCW 82.87 — Washington capital gains tax and the real estate exemption
• H.R. 4327, No Tax on Home Sales Act — bill text and current status

About Rick Sadle

Rick Sadle is the Principal Broker and CEO of The Sadle Home Selling Team at Keller Williams Realty Professionals, serving the Portland, Oregon and Vancouver, Washington real estate markets. With more than 20 years of real estate experience, over 3,500 homes sold and more than $1 billion in team sales volume, Rick is one of the Portland area's most experienced real estate professionals. He is also a weekly real estate expert on KXL 101 FM, where he discusses the Portland and Vancouver housing markets, mortgage rates, housing trends and the economy. Rick is an Oregon-licensed Principal Broker and Washington-licensed Broker.