It's the question almost every seller asks before listing: will I owe capital gains tax when selling a house in Washington? It's a fair worry — home values across Clark County have climbed sharply, and a big jump in value sounds like a big tax bill. The reassuring news for most homeowners is simple: you probably owe nothing. Washington exempts real estate from its state capital gains tax entirely, and the federal exclusion shelters most of the gain on a primary residence. Here's exactly how it works, when tax can apply, and how to make sure you keep what you've earned.
The Short Answer
For the large majority of Washington homeowners selling their primary residence, there is no capital gains tax to pay — at either the state or federal level.
- State: Washington's capital gains tax specifically exempts the sale of real estate, so your home sale owes nothing to the state.
- Federal: The IRS lets a single filer exclude up to $250,000 of gain and a married couple up to $500,000 — and most home sales fall entirely under that cap.
Tax can apply federally only when your gain runs above the exclusion, or when the property is a second home, a rental, or vacant land that doesn't qualify. Let's walk through each layer so you know exactly where you stand.
This Is General Information, Not Tax Advice
Tax outcomes depend on your personal numbers and circumstances. Use this as a plain-English map of how the rules work, then confirm the specifics for your situation with a CPA or tax professional before you make decisions. Rates and thresholds cited are current as of 2026 and can change.
Washington State Capital Gains Tax and the Real-Estate Exemption
Washington adopted a state capital gains tax in recent years, and it understandably made sellers nervous. But it's narrower than the name suggests. The tax applies to the long-term gain on capital assets such as stocks, bonds, and business interests — not to your house. The base rate is 7%, and a 2025 law added a higher tier of 9.9% on gains above $1 million. There's also a sizable standard deduction (about $278,000, adjusted annually for inflation) before any tax applies.
Here's the part that matters for sellers: the sale of real estate is exempt under RCW 82.87.050. A homeowner selling their house or land in Washington owes no state capital gains tax on that sale — full stop. The 7% and 9.9% rates exist, but they simply do not reach your home sale. So when you read headlines about Washington's capital gains tax, you can set them aside for your real estate transaction.
One narrow caveat: if you're selling an ownership interest in a privately held entity (rather than the property itself by deed), the real-estate exemption only applies to the portion of the gain attributable to real estate the entity directly owns. That's an edge case for business owners, not a typical home sale — but worth flagging to your CPA if it describes you.
Federal Capital Gains and the $250k / $500k Exclusion
The federal side is where the real protection lives for homeowners, through what the IRS calls the primary-residence exclusion (Section 121). It works like this:
- A single filer can exclude up to $250,000 of gain from tax.
- A married couple filing jointly can exclude up to $500,000 of gain.
To qualify, you have to pass the ownership and use test: you must have owned and used the home as your main home for at least 2 of the last 5 years (24 months total, and they don't have to be consecutive). You can also claim the exclusion only once every two years — so if you sold another primary residence and used the exclusion recently, you may need to wait.
For a couple, $500,000 of tax-free gain is a lot of room. Even with the appreciation many Clark County owners have seen, most sales land comfortably under the cap. That's why the practical answer for the typical Washington seller is: no federal capital gains tax either.
How Your Gain Is Actually Calculated
People often assume "gain" means the difference between what they paid and what they sell for. It's actually lower than that, because selling costs and improvements reduce it. The formula:
Gain = (Sale price − Selling costs) − Adjusted basis
Where adjusted basis = original purchase price + capital improvements you've made over the years (a new roof, an addition, a remodeled kitchen — not routine repairs). Here's a worked example for a long-time Vancouver owner:
- Bought the home years ago for $300,000
- Added a primary suite and replaced the roof: +$80,000 in capital improvements
- Adjusted basis = $380,000
- Sells today for $700,000, with $50,000 in selling costs (commission, excise tax, title, escrow)
- Amount realized = $700,000 − $50,000 = $650,000
- Gain = $650,000 − $380,000 = $270,000
For a married couple, that $270,000 gain is fully covered by the $500,000 exclusion — zero federal tax. For a single filer, $250,000 is excluded and only the remaining $20,000 would be potentially taxable. Notice how much the improvements and selling costs matter: without that $80,000 in tracked improvements, the gain would have been $80,000 higher. Good records can be the difference between owing nothing and owing something.
Your "Profit" Is Smaller Than the Price Jump
Selling costs and documented improvements both come off your gain before any exclusion is applied. Washington's excise tax is one of those selling costs — the tax sellers actually do pay. We break it down in our guide to the Washington real estate excise tax (REET), the line item most often confused with capital gains.
When You DO Owe Federal Capital Gains
The state exemption always protects you in Washington, but federal tax can apply in these situations:
- Gain above the exclusion. If your gain exceeds $250,000 (single) or $500,000 (married), only the excess is taxable.
- Second homes and vacation properties. These don't meet the "main home" use test, so the §121 exclusion generally doesn't apply.
- Rental and investment property. No primary-residence exclusion, plus depreciation recapture — the depreciation you deducted over the years is taxed back when you sell (commonly up to 25%). If you're weighing this decision, see whether to sell or rent out your Vancouver WA home.
- Vacant land that wasn't part of your residence.
- Owning or living there under 2 years without a qualifying partial exception (job relocation, health, or unforeseen circumstances can allow a prorated exclusion).
When gain is taxable, federal long-term capital gains rates are 0%, 15%, or 20% depending on your income (thresholds adjust annually for inflation; 15% is the common bracket for most sellers with taxable gain). High earners may also owe a 3.8% Net Investment Income Tax on top. A tax professional can pin down your exact rate.
Special Cases, Briefly
- Inherited homes. Inherited property gets a stepped-up basis to its fair-market value on the date of death — so an heir who sells soon after usually has little or no taxable gain (only the appreciation after the date of death, minus selling costs). More in our guide to selling an inherited house in Washington.
- Divorce. Timing, ownership, and who keeps the home affect whether one or both spouses can use the exclusion. We cover the moving parts in selling a house during divorce in Washington.
- Rentals you once lived in. The math gets nuanced when a property was both a home and a rental — depreciation recapture still applies even if part of the gain qualifies for the exclusion. This is a "talk to your CPA" scenario.
How to Qualify For and Preserve the Exclusion
A few habits protect your tax position and your bottom line:
- Meet the 2-of-5-year test. If you're close to the 24-month mark, the timing of your sale can matter. If you've used the exclusion in the last two years, check the once-every-two-years rule before listing.
- Keep good basis records. Save receipts and contracts for every capital improvement — they raise your basis and shrink your gain. Closing statements from your purchase and sale document your price and selling costs.
- Track selling costs. Commission, excise tax, title, and escrow all reduce the amount realized. See the full picture in our breakdown of the cost to sell a home in Washington.
- Know your real net. Capital gains is just one piece of what you walk away with. Our guide to net proceeds when selling a house in Washington ties the costs, payoff, and taxes together.
A Quick Reality Check for Washington Sellers
Step back and the picture is encouraging. Washington has no state income tax, exempts real estate from its capital gains tax, and the federal exclusion shelters up to half a million dollars of gain for couples. For the everyday homeowner selling the place they've lived in, capital gains tax is usually a non-issue. The cost that does reliably show up at closing is the excise tax — not capital gains — which is why it's worth understanding both so you don't conflate the two.
Want clarity on your specific sale? Request a free broker estimate and we'll prepare an itemized net sheet for your home — sale price, selling costs, excise tax, and payoff — so you can have an informed conversation with your CPA and know your real number before you list.
Frequently Asked Questions
Do you pay capital gains tax when selling a house in Washington?
Most Washington homeowners selling a primary residence pay no capital gains tax at all. Washington's state capital gains tax specifically exempts the sale of real estate, so you owe nothing to the state on your home sale. Federally, the IRS lets you exclude up to $250,000 of gain if single, or $500,000 if married filing jointly, so the typical sale falls entirely under the exclusion.
Does Washington's capital gains tax apply to selling my home?
No. Washington's capital gains tax is a 7% tax (9.9% on gains over $1 million) on long-term assets like stocks and business interests, but the sale of real estate is exempt under RCW 82.87.050. Selling your house or land in Washington does not trigger the state capital gains tax.
How much can I exclude when I sell my primary residence?
Under the federal primary-residence exclusion, you can exclude up to $250,000 of gain if you file single and up to $500,000 if you are married filing jointly. To qualify, you must have owned and used the home as your main home for at least 2 of the last 5 years, and you can only claim the exclusion once every two years.
How is the gain on my home sale calculated?
Your gain equals the sale price minus your selling costs minus your adjusted basis. Adjusted basis is what you originally paid for the home plus the cost of capital improvements over the years. Only the gain that exceeds your $250,000 or $500,000 exclusion is potentially taxable at the federal level.
Do I owe capital gains tax on a rental or second home in Washington?
The state real estate exemption still applies, so you owe no Washington capital gains tax. Federally, a second home or rental usually does not qualify for the primary-residence exclusion, so the gain can be taxable at 0%, 15%, or 20%, and rentals also face depreciation recapture. A 3.8% net investment income tax may apply to higher earners.
Avenir Gedarevich
Avenir is the Designated Broker and Real Estate Agent of Vancouver Property Group, serving home sellers across Southwest Washington and Clark County. License #25011405.