Believing an S corporation 'saves state tax' in Washington. It saves nothing at the state level because there is no income tax to save, and the B&O tax is on GROSS receipts, so it is owed in loss years and does not shrink at all when profit is reclassified from salary to distributions. Meanwhile the S election creates genuine NEW Washington costs: as a W-2 officer the owner becomes subject to L&I workers' compensation premiums, Paid Family and Medical Leave, and WA Cares, and the ESD/L&I corporate-officer coverage and exemption rules are easy to get wrong. The entire benefit in Washington is federal Social Security and Medicare savings, and it must be weighed against added state payroll cost and compliance burden.
No personal income tax
S-corp election in Washington
In short
B&O gross receipts tax applies at the entity level regardless of S status; no income tax and no franchise tax.
Does Washington recognize the federal S election?
Washington has NO corporate income tax and NO personal income tax, so there is nothing for a federal S election to be recognized for at the state income-tax level. There is no Washington S corporation return, no state election, and no state-level analysis of reasonable compensation versus distributions. Washington instead taxes GROSS RECEIPTS through the Business and Occupation (B&O) tax, which applies identically regardless of entity type — per DOR, 'there is no discrimination due to the structure of the firm', and corporations, LLCs, partnerships and sole proprietorships are treated alike.
Tax the entity still owes
The B&O tax is measured on gross income with NO deduction for labor, materials, taxes, rent, or other costs of doing business. Service and Other Activities is tiered by prior-year gross income: 1.5% if under $1,000,000; 1.75% if $1,000,000 to $4,999,999; 2.1% if $5,000,000 or more. Retailing is 0.471%; Wholesaling 0.484%; Manufacturing 0.484%. There are more than 50 classifications and a business reports under the one matching its activity. A Small Business B&O Tax Credit can reduce or eliminate liability for small filers; 2026 legislation (ESSB 6346) increases that credit and raises the registration threshold. Washington also imposes a capital gains excise tax on long-term gains: 7% on the first $1,000,000 of taxable Washington capital gains plus an additional 2.9% above $1,000,000 (9.9% total), after a standard deduction — directly relevant if the owner later sells the S corporation stock. Retailers also collect retail sales tax.
Registering for payroll
No state income tax withholding account exists because Washington has no personal income tax. Register through the Washington Business Licensing Service / Department of Revenue business license application, which also opens the B&O tax account. Register with the Employment Security Department (ESD) for unemployment insurance AND for Paid Family and Medical Leave premiums. Register with the Department of Labor and Industries (L&I) for workers' compensation — Washington operates a state-run monopoly fund, so private workers' comp cannot be substituted, and corporate officers on payroll are subject to specific coverage and exemption-election rules. WA Cares Fund long-term-care premiums are employee-paid.
Annual filings
Combined Excise Tax Return (B&O plus retail sales/use tax) filed monthly, quarterly, or annually with DOR depending on the assigned frequency. Quarterly ESD unemployment tax and wage reports plus Paid Family and Medical Leave reporting. Quarterly L&I workers' compensation reports. Annual report with the Washington Secretary of State on the registration anniversary, plus business license renewal. Capital gains excise tax return where applicable — DOR moved the tax year 2025 return due date to May 1, 2026.
Pass-through entity tax
No PTET and none is possible. Washington has no personal income tax, so there is no state-level SALT deduction for a pass-through entity tax to work around.
The mistake owners make most often in Washington
Filing your federal Form 2553
Businesses operating in Washington send Form 2553 to the IRS Ogden service center — fax 855-214-7520. Full address and filing checklist for Washington.
Frequently asked questions
Does Washington require a separate S-corporation election?
No. Washington does not require a separate state election. Washington has NO corporate income tax and NO personal income tax, so there is nothing for a federal S election to be recognized for at the state income-tax level.
What tax does an S corporation pay in Washington?
B&O gross receipts tax applies at the entity level regardless of S status; no income tax and no franchise tax.
Where do I file Form 2553 from Washington?
With the IRS Ogden service center. Fax 855-214-7520, or mail to Department of the Treasury, Internal Revenue Service, Ogden, UT 84201.
What is the most common S-corp mistake in Washington?
Believing an S corporation 'saves state tax' in Washington. It saves nothing at the state level because there is no income tax to save, and the B&O tax is on GROSS receipts, so it is owed in loss years and does not shrink at all when profit is reclassified from salary to distributions. Meanwhile the S election creates genuine NEW Washington costs: as a W-2 officer the owner becomes subject to L&I workers' compensation premiums, Paid Family and Medical Leave, and WA Cares, and the ESD/L&I corporate-officer coverage and exemption rules are easy to get wrong. The entire benefit in Washington is federal Social Security and Medicare savings, and it must be weighed against added state payroll cost and compliance burden.
Compare with other states: West Virginia, Wisconsin, Wyoming, Alabama, Alaska, Arizona.
Sources
File your Form 2553 correctly
Scorply completes your federal election and includes a Washington guide in your packet, so you know exactly what else you owe here.
Start my Form 2553Researched from official Washington sources and verified July 30, 2026. State tax rules change. This is general information, not tax advice — confirm with the state or a CPA before you rely on it.