Washington Payroll Taxes: 2026 Employer Guide
Quick Facts
Key payroll tax details at a glance.
State Income Tax
No state income tax
SUI New Employer Rate
Varies (assigned by state based on industry)
SUI Wage Base
$72,500 per employee
SUI Rate Range
0.27% to 6.0%
Employee SUI Contribution
No
Local Taxes
No
Overview: Why Washington Payroll Is Simple
Washington has no income tax on wages, which simplifies withholding. But the state's payroll environment is more complex than other no-income-tax states due to the Paid Family and Medical Leave program, the highest SUI wage base in the country at $72,500, and a monopolistic state workers' compensation fund.
The PFML program requires employers to split contributions with employees, with the employer share applying only to companies with 50+ employees. Washington's SUI wage base of $72,500 means employers pay unemployment tax on a much larger portion of wages than almost anywhere else. Seattle-area employers should also be aware of city-specific business taxes (though these are not payroll withholding taxes).
This guide breaks down each of Washington's employer obligations: registration requirements, 2026 tax rates and wage bases, filing deadlines, and the compliance pitfalls that catch expanding startups off guard. Whether you're hiring your first Washington employee or managing a growing remote team, everything you need to stay compliant is here.
Washington State Income Tax
Withholding rates, brackets, and forms.
Washington does not levy a state income tax. Employers do not need to withhold state income tax from employee wages.
Washington Unemployment Insurance (SUI)
Employer rates, wage bases, and contribution details.
New Employer Rate
Varies (assigned by state based on industry)
Wage Base
$72,500 per employee
Rate Range
0.27% to 6.0%
Employee Contribution
—
Washington SUI (State Unemployment Insurance) is an employer-paid tax that funds unemployment benefits for workers who lose their jobs. It is administered by the Washington Employment Security Department. Registration: Employers must register with the Washington Employment Security Department as soon as they hire their first Washington employee. Registration can be completed online.
Washington Additional Employer Taxes
Other state-mandated payroll contributions.
Paid Family and Medical Leave (PFML)
0.92% total (~28.57% employer, ~71.43% employee)
Workers' Compensation (L&I)
Varies by industry classification
Washington Compliance Checklist
Deadlines, filing requirements, and official resources.
Key Deadlines
Quarterly returns (Q1)
Due April 30
Quarterly returns (Q2)
Due July 31
Quarterly returns (Q3)
Due October 31
Quarterly returns (Q4)
Due January 31
W-2 state copies
Due January 31 (federal only)
New hire report
Due Within 20 days of start date
How Warp Handles Washington Payroll
Warp is the only AI-native HR & Payroll platform built for ambitious companies. Instead of clicking through clunky dashboards or Washington's .gov websites for taxes, Warp's AI agents open your Washington tax accounts, file every payroll form, and resolve every tax notice automatically.
What Warp handles for Washington employers:
- Washington tax account registration and setup
- SUI registration and quarterly filings
- Paid Family and Medical Leave (PFML) setup and remittance
- Workers' Compensation (L&I) setup and remittance
- Annual W-2 and reconciliation filing
- Tax notice resolution directly with Washington agencies, so you never spend hours on hold
Every Warp customer gets a dedicated Account Manager and Benefits Advisor included to guide them through payroll setup, multi-state expansion, and benefits selection. You'll never visit a government website, negotiate with tax agencies, or pay an accountant $150 per quarterly filing.
If you don't want to deal with navigating Washington .gov portals, check out a demo of Warp to see how we can help you stop worrying about compliance and get back to building.
Tax data last verified: March 12, 2026