Seattle residents pay no state tax on wages or salaries, because Washington is one of the few states without a personal income tax. What you pay instead is a stack of other taxes: a combined sales tax above 10%, a state excise tax on large capital gains, real estate excise tax when you sell property, and, if you own a business, gross receipts taxes at both the state and city level. The Seattle state tax picture is layered rather than simple, and which pieces apply depends on whether you earn wages, invest, sell a home, or run a company.
Why Washington Has No Income Tax on Wages
A 1933 Washington Supreme Court decision, Culliton v. Chase, held that income counts as “property” under the state constitution. Because Article VII, Section 1 requires property taxes to be uniform within each class, a graduated income tax that charges higher earners a bigger percentage was ruled unconstitutional.1Washington State Legislature. Washington State Constitution – Article VII Revenue and Taxation Every attempt since has run into the same wall.2Washington Department of Revenue. Chapter 5 Principal Constraints The practical result is that your paycheck stub in Seattle shows federal withholding, Social Security, and Medicare, but no state line.
Seattle Sales and Use Tax
Sales tax is the biggest recurring tax for most Seattle residents. The rate you pay at a register combines the 6.5% state rate with local levies from the city, King County, Sound Transit, and other taxing districts. The combined rate has exceeded 10% for years, putting Seattle among the highest-sales-tax cities in the country. Because the local pieces change periodically, the Washington Department of Revenue publishes a rate lookup tool tied to specific addresses.3Washington Department of Revenue. Sales and Use Tax Rates
Use tax fills the gap when you buy something without paying Washington sales tax, most commonly on an online order that ships from a seller who doesn’t collect it, or on a purchase you bring back from Oregon. The rate matches whatever the combined sales tax would have been at your location: 6.5% state, plus the local rate where you first store or use the item.4Washington Department of Revenue. Use Tax
Capital Gains Excise Tax
Despite the ban on income tax, Washington has taxed profits from selling investments since 2022. The Supreme Court upheld it as an excise tax on the transaction rather than a tax on the gain itself. For 2026, the tax has two tiers: 7% on the first $1 million in taxable Washington capital gains, and 9.9% on anything above $1 million (the base 7% plus a 2.9% surcharge that took effect in 2025).5Washington Department of Revenue. New Tiered Rates for Washington’s Capital Gains Tax Only individuals owe it; corporations and partnerships do not pay it directly.6Washington State Legislature. RCW 82.87.040
Major categories are exempt. Real estate sales are not subject to this tax, so selling your Seattle home doesn’t trigger it regardless of the profit. Retirement account assets are excluded. Depreciable business assets like equipment and machinery are exempt, as are certain timber and livestock holdings.7Washington Department of Revenue. Capital Gains Tax
Real Estate Excise Tax When You Sell
Selling property in Seattle triggers a real estate excise tax (REET) collected by the state, with a Seattle local component added on top. The state rates are graduated and apply to each slice of the price, similar to federal income tax brackets:
- 1.10% on the portion up to $525,000
- 1.28% on $525,001 to $1,525,000
- 2.75% on $1,525,001 to $3,025,000
- 3.00% on anything above $3,025,000
Seattle adds its own local REET.8Washington Department of Revenue. Real Estate Excise Tax The seller typically pays, though buyers and sellers can negotiate a different split in the purchase agreement.
Business Taxes: State B&O
Washington’s Business and Occupation tax replaces what most states collect as a corporate income tax, and it works very differently. B&O taxes gross receipts, not profit. You can’t subtract labor, materials, rent, or any other expense before calculating what you owe. A business that grosses $500,000 and nets $20,000 pays the same B&O as one that grosses $500,000 and nets $200,000.9Washington Department of Revenue. Business and Occupation Tax
Rates depend on what you do. Retailing is taxed at 0.471%, wholesaling and manufacturing at 0.484%, and service and other activities at 1.5%. A business operating in more than one classification reports and pays under each separately.10Washington Department of Revenue. Business and Occupation (B&O) Tax
Seattle City B&O and the 2026 Threshold Change
Seattle layers its own B&O tax on top of the state levy. Historic city rates ran at 0.222% for retail and 0.427% for service and other business activities for the 2018–2025 period.11Seattle.gov. Tax Rates and Classifications – City Finance
January 1, 2026 brings a significant change. The Seattle B&O threshold jumps from $100,000 to $2 million in annual taxable revenue. Businesses below $2 million may owe no Seattle B&O at all. Businesses above the threshold also receive a new $2 million standard deduction, so the city tax only applies to revenue exceeding that amount.12Seattle.gov. City Finance – Business Taxes The state B&O still applies at its usual thresholds; only the city piece shifts.
JumpStart Payroll Expense Tax
Seattle’s JumpStart tax targets large employers with high-paid staff and does not touch small businesses. For 2026, a business is subject to the tax only if its total Seattle payroll exceeded roughly $9.07 million in the prior year and it has at least one employee earning $194,452 or more. The thresholds adjust for inflation annually.13Seattle.gov. Payroll Expense Tax
Rates are tiered by both employee compensation and the company’s total payroll size. They range from 0.746% on compensation between roughly $194,000 and $519,000 at smaller qualifying firms, up to 2.557% on compensation above $519,000 at the largest employers. The tax is paid by the employer, not withheld from the employee.
Federal SALT Deduction for Washington Residents
Living in a no-income-tax state changes one specific line on your federal return. When you itemize on Schedule A, you choose between deducting state and local income taxes or state and local sales taxes. Washington residents get no benefit from the income tax option, so the sales tax deduction is the one to use. You can calculate it from actual receipts or from IRS tables based on your income and location.14Internal Revenue Service. Topic No. 503, Deductible Taxes
All state and local taxes you deduct, including sales tax and property tax, are capped in total by the federal SALT limit. For 2026, that cap is $40,000 for most filers and $20,000 if married filing separately. The cap is subject to a modified adjusted gross income limitation but won’t drop below $10,000.14Internal Revenue Service. Topic No. 503, Deductible Taxes Seattle homeowners with large property tax bills often hit the cap on property tax alone, which leaves less room for the sales tax deduction to add anything. Run the numbers before assuming.
Registering and Filing as a Business
Any business operating in Washington needs a Unified Business Identifier (UBI), a nine-digit number that registers you across multiple state agencies at once.15Washington Department of Revenue. Business Licensing and Renewals FAQs If you operate within Seattle city limits, you also need a Seattle Business License Tax Certificate, which comes with its own customer number for city tax reporting and expires December 31 each year.16Seattle.gov. Business Licenses
State taxes (state B&O, sales, and use tax) file through the Department of Revenue’s My DOR portal. City taxes (Seattle B&O, JumpStart, and license renewal) file through FileLocal, a separate portal shared by several Washington cities.17FileLocal. FileLocal – A Portal to e-File and Pay Business Taxes, Licenses, and Fees
Filing frequency at the state level depends on liability. Businesses owing $1,050 or less annually file once a year. Between $1,051 and $4,800, quarterly. Above $4,800, monthly. Construction and restaurant businesses start at quarterly regardless of size.18Washington Department of Revenue. Filing Frequencies and Due Dates Both portals accept ACH debits and credit cards.
Keep business tax records for at least three years from the filing date as a general rule. Employment tax records should be kept at least four years.19Internal Revenue Service. How Long Should I Keep Records Washington has its own retention rules on top of the federal ones, so keeping records longer than the minimum is the safer approach.