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Current Self-Insurance Assessment Rates

Assessments based on claim costs
Administrative Assessment (WAC 296-15-223 (app.leg.wa.gov))
Administrative Assessment Notice (1388 KB PDF)
Fiscal year Base Adjusted
2019 0.0541 0.0585
Second Injury Assessment (WAC 296-15-225 (app.leg.wa.gov))
Secondary Injury Assessment Notice (660 KB PDF)
Fiscal year Base Adjusted
2019 0.1050 0.1050
Insolvency Trust Assessment (WAC 296-15-227 (app.leg.wa.gov))
Insolvency Trust Assessment Notice (194 KB PDF)
Quarterly Average
2019 0.0000

Assessments based on worker hours
Supplemental Pension & Asbestos (WAC 296-15-229 (app.leg.wa.gov))
Can withhold half from employees
Assessment Rate Notice (234 KB PDF)
Calendar year Assessment
2019 0.1122
Overpayment reimbursement
Can withhold entirely from employees
Calendar year Assessment
2019 0.0001

Key

  • Base applies to self-insured employers certified after July 1, 2017.
  • Adjusted applies to self-insured employers certified before July 1, 2017, whose rate is impacted by any previous over or under collection of that assessment.
  • Time periods:
    • Fiscal year: July 1 through June 30.
    • Calendar year: Jan. 1 through Dec. 31.
    • Quarterly: Assessed each quarter.

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