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WA Workers' Comp Calculator 2026

Estimate your Washington State workers' compensation premiums by risk class and payroll. No more digging through L&I PDF rate tables.

Find your risk class at L&I Risk Classes

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How WA Workers' Comp Works

Washington is one of four "monopolistic" states where workers' compensation insurance must be obtained through the state fund (L&I) rather than private insurers. Every employer must pay premiums based on their industry risk classification and total payroll.

Understanding Risk Classes

L&I assigns every employer a risk class code based on the type of work performed. Higher-risk occupations (roofing, construction) pay significantly more than lower-risk ones (office work, IT). Rates are expressed as a dollar amount per $100 of payroll.

What Affects Your Premium?

  • Risk class: Your primary industry classification
  • Payroll: Total wages paid to employees
  • Experience factor: Your claims history compared to industry average
  • Supplemental rate: Additional assessment for the Second Injury Fund and other programs

Disclaimer: These are estimates using representative rates. Actual premiums depend on your experience modification factor, claims history, and exact sub-classification. Contact L&I for a binding rate quote.