Tax Laws in Washington (2026): Your No-Nonsense Guide

Washington state has a reputation for having no income tax. And for most people, that’s still true. But the tax picture here is more complex than that simple headline suggests.

A lot has changed recently. Big changes. If you live, work, or own a business in Washington, this guide is for you.

What Is Washington’s Tax System?

Washington doesn’t tax your regular wages or salary. No income tax on your paycheck. That’s what makes the state appealing for many workers and retirees.

But the state still needs revenue. So it collects taxes in other ways. Think sales tax, property tax, business taxes, and now, some investment taxes too.

Honestly, this is the part most people miss. Washington’s tax system looks simple on the surface. But dig a little deeper, and there’s quite a bit going on.

Sales Tax in Washington

Washington has one of the highest sales taxes in the country. The state rate is 6.5%. Local governments pile on top of that.

Your combined rate depends on where you live. The average combined state and local sales tax rate is 9.51%. In Seattle, that total hits around 10.25%. Pretty much one of the highest in the nation.

Wondering what’s exempt? Good question. Exemptions include prescription medication, medical devices and oxygen, newspapers, and gun safes. Groceries are also exempt from the state portion of sales tax.

Starting in 2029, more items could be exempt. New sales tax exemptions are set to cover diapers, grooming and hygiene products, and over-the-counter drugs. But those are tied to a new income tax law that’s still being challenged in court. More on that below.

Property Tax in Washington

If you own a home in Washington, you pay property taxes. Simple enough. But the rate varies a lot depending on where you live.

Washington has a statewide average property tax rate of 0.75% of a home’s assessed value. Actual rates vary by county, from a low of 0.53% in San Juan County to 0.96% in Garfield County.

King County, which includes Seattle, tends to have higher rates because of voter-approved levies. If you own an $800,000 home there, you could be paying between $7,200 and $8,800 per year in property taxes.

Stay with me here, because there’s a helpful exemption coming up.

Senior and Disabled Property Tax Exemptions

If you’re 61 or older, or disabled, you might qualify for a property tax break. Washington offers exemptions based on your income.

Income under $40,000 brings a 60% exemption. Income between $40,000 and $45,000 gets a 50% exemption. Income between $45,000 and $50,000 qualifies for a 30% exemption. You must own and occupy the home as your primary residence to qualify.

Veterans can also apply. Military veterans can apply for the exemption if they are receiving compensation for a combined service-related disability rating of 80% or more.

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Capital Gains Tax in Washington

Okay, pause. Read this carefully. This is the tax that catches a lot of people off guard.

Washington doesn’t tax regular income. But it does tax profits from selling investments like stocks and bonds. This is called a capital gains tax.

Washington imposes a capital gains excise tax with a 7% rate on long-term capital gains above approximately $262,000. Long-term means you held the investment for more than one year.

Here’s an example. Say you sell stocks and make a $400,000 profit. The first $262,000 is not taxed. The remaining $138,000 is taxed at 7%. That comes out to about $9,660 owed to the state.

Not sure if this applies to you? Most people it won’t. The tax affects fewer than 7,000 Washington residents annually, less than 0.1% of the population.

The New Tiered Rate for Big Gains

Here’s where it gets interesting. In 2025, Washington added a second tier for very large gains.

Your first $1 million in taxable Washington capital gains is taxed at 7%. Any amount above $1 million is subject to a 7% tax plus an additional 2.9% tax. That means the top rate is 9.9% on gains over $1 million.

What’s Exempt from Capital Gains Tax?

You’re gonna love this part if you own a home. Real estate is completely exempt from Washington’s capital gains tax.

Other exemptions include retirement accounts like 401(k)s and IRAs. Gains within retirement accounts are exempt, along with gains from certain small business sales and livestock.

So if you sell your house at a big profit, no Washington capital gains tax applies. That’s a big deal in a state where home values have skyrocketed.

The New “Millionaires’ Tax” (Coming in 2028)

Hold on, this part is important. Washington just passed a brand-new income tax. It’s historic.

Governor Bob Ferguson signed a new 9.9% state income tax bill on March 30, 2026, imposing a tax on households exceeding $1 million in Washington taxable income. This makes Washington one of the first states to pass an income tax specifically targeting high earners.

But here’s the thing: it won’t hit your wallet yet. The tax is set to take effect in the 2028 tax year, with payments due in 2029.

And it’s already being challenged. Legal challenges to the new income tax law have already been filed. The Washington state constitution has historically made income taxes very difficult to pass. This one will likely face a long court battle before it’s settled.

Most residents won’t be affected anyway. The standard deduction is set at $1 million, with that threshold applying equally to both single filers and married couples filing jointly. So the tax only applies to income above that million-dollar mark.

Business and Occupation (B&O) Tax

If you run a business in Washington, you pay the B&O tax. Think of it like a fee for doing business in the state.

This is different from other states. Washington taxes your gross receipts, not your profits. That means you pay even if your business isn’t making money. A lot of small business owners find this frustrating, honestly.

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Common rates include retailing at 0.471% of gross receipts, wholesaling at 0.484%, and service activities at 1.5% of gross income.

Starting January 1, 2027, Washington will increase the B&O tax rate for manufacturing, retailing, and wholesaling to 0.5%. Small change, but worth knowing if you run one of those types of businesses.

B&O Changes for High-Revenue Businesses

For larger businesses, there’s more. A 0.5% temporary surcharge applies to taxpayers with taxable income over $250 million, running from January 1, 2026, to December 30, 2029.

Big tech companies face even steeper rates. The advanced computing surcharge applies to businesses with worldwide gross revenue exceeding $25 billion. The rate rose to 7.5% with a $75 million annual cap beginning January 1. This is aimed at the largest tech giants, not your average business.

Estate Tax in Washington

Washington is one of only a handful of states with its own estate tax. Most people won’t deal with it. But if you have a large estate, you need to know this.

The estate tax applies to estates of at least $9 million with a $3 million exclusion. That means the tax only kicks in once the estate value goes above the exemption amount.

Good news for families with large estates: the rates just came down. The top estate tax rate was lowered from 35% to 20% for people who die on or after July 1, 2026. That 35% rate was only in place for one year.

Other Taxes Worth Knowing

Washington has a few other taxes that affect everyday life.

The gas tax is one of the higher ones in the nation. Washington’s gas tax is 59.04 cents per gallon, and its cigarette excise tax is $3.025 per pack of 20 cigarettes.

Starting in 2026, nicotine pouches like Zyn are now taxed too. Senate Bill 5814 extends Washington’s existing tax on the sale of miscellaneous tobacco products, capturing emerging products that were previously exempt. This is expected to raise over $55 million per year.

There’s also a real estate excise tax when you sell property. The seller pays it. The rate is tiered based on the sale price, so higher-value homes get taxed at a higher rate.

New Sales Tax Exemptions Starting 2029

Many people don’t realize how strict Washington’s sales taxes are on everyday goods. The state is taking some steps to ease that burden, at least for essentials.

Beginning January 1, 2029, Washington plans to exempt diapers, grooming and hygiene products, and over-the-counter drugs from sales and use tax. That’s real money back in your pocket for everyday purchases.

The catch: these exemptions are tied to the new millionaires’ income tax law. If a court invalidates the income tax, the sales tax exemptions will also be null and void. So watch for how the courts rule over the next couple of years.

How to Stay Compliant in Washington

You’re not alone, this confuses a lot of people. Here’s a simple breakdown of what most residents need to do.

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For most workers, there’s nothing extra to file at the state level. Washington has no income tax return for wages. You file your federal return and you’re done at the state level.

If you sell investments like stocks, bonds, or business interests at a profit above $262,000, you need to file a Washington capital gains return. Only individuals owing capital gains tax are required to file a capital gains tax return, along with a copy of their federal tax return for the same taxable year.

Business owners need to file B&O tax returns with the Washington Department of Revenue. The frequency depends on how much revenue your business brings in.

If you own property, your property taxes are handled through your county. You’ll receive a bill. Seniors and disabled homeowners should apply for the exemption program through their county assessor’s office.

Frequently Asked Questions

Does Washington have a state income tax?

Not on wages and salaries. Washington does not tax your paycheck. However, a new income tax on earnings above $1 million was signed into law in 2026 and is set to take effect in 2028, pending legal challenges.

Do I have to pay capital gains tax in Washington if I sell my house?

No. Real estate is fully exempt from Washington’s capital gains tax. You may still owe federal taxes depending on your profit and how long you owned the home.

What is the sales tax rate in Washington state?

The state rate is 6.5%, but local taxes bring the average combined rate to about 9.51%. In Seattle, the combined rate is approximately 10.25%.

Who pays Washington’s capital gains tax?

You owe it if you sell long-term investments like stocks or bonds and your profit exceeds $262,000 in a single year. Fewer than 7,000 people in Washington pay this tax annually.

When does the new millionaires’ income tax take effect?

It’s scheduled to start January 1, 2028, with first payments due in 2029. It only applies to income above $1 million. Legal challenges are already underway, so the law could change before then.

Final Thoughts

Washington’s tax system is genuinely one of a kind. No income tax on wages is a real benefit for most residents. But the state makes up for it with higher sales taxes, business taxes, and now, new taxes on the very wealthy.

Most people living here won’t feel the new millionaires’ tax or the capital gains tax. But if you run a business, own investments, or have a large estate, there’s a lot to track right now.

Stay informed. When in doubt, talk to a tax professional who knows Washington state law. And keep an eye on the courts over the next couple of years. Things are still moving fast.