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Current Self-Insurance Assessment Rates

Assessments based on claim costs
Administrative Assessment (WAC 296-15-223 (app.leg.wa.gov))
Fiscal year Base Adjusted
2018 0.0543 0.0524
Second Injury Assessment (WAC 296-15-225 (app.leg.wa.gov))
Fiscal year Base Adjusted
2018 0.1050 0.0150
Insolvency Trust Assessment (WAC 296-15-227 (app.leg.wa.gov))
Quarterly Average
2018 0.0000

Assessments based on worker hours
Supplemental Pension & Asbestos (WAC 296-15-229 (app.leg.wa.gov))
Can withhold half from employees
Calendar year Assessment
2017 0.0962
Overpayment reimbursement
Can withhold entirely from employees
Calendar year Assessment
2017 0.0000

Key

  • Base applies to self-insured employers certified after July 1, 2015.
  • Adjusted applies to self-insured employers certified before July 1, 2015, 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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