Key Takeaways

  • The Office of Insurance Commissioner (OIC) regulates all P&C insurance activities in Washington State
  • The Insurance Commissioner is ELECTED by Washington voters to a 4-year term—one of only 11 states with elected commissioners
  • OIC handles licensing, rate review, market conduct examinations, and consumer complaints for P&C insurance
  • Washington uses a "file and use" rate system for most P&C lines—rates take effect upon filing
  • The Commissioner has authority to disapprove rates that are excessive, inadequate, or unfairly discriminatory
Last updated: January 2026

Office of Insurance Commissioner (OIC)

Important: This study guide covers Washington state-specific Property & Casualty insurance content only. You should complete the national Property & Casualty exam preparation first, as it covers the foundational insurance concepts tested on your exam.

The Office of Insurance Commissioner (OIC) is the state agency responsible for regulating the Property & Casualty insurance industry in Washington. Unlike many state agencies headed by appointed officials, Washington's Insurance Commissioner is elected by voters.

The Insurance Commissioner

The Insurance Commissioner is:

  • Elected by Washington voters to a 4-year term
  • One of only 11 states where the commissioner is elected
  • Responsible for enforcing the Revised Code of Washington (RCW) Title 48
  • Authorized to adopt regulations (WAC Title 284), review rates, investigate violations, and discipline licensees

Commissioner Powers for P&C Insurance

PowerDescription
LicensingIssue, suspend, and revoke producer licenses
Rate ReviewReview and disapprove P&C insurance rates
Market ConductExamine insurer business practices
EnforcementInvestigate and prosecute violations
Consumer ProtectionHandle complaints and protect policyholders
RulemakingAdopt regulations under WAC Title 284

Washington Insurance Code

Washington insurance law is found in:

Primary Sources

  • RCW Title 48 - Washington Insurance Code (statutes)
  • WAC Title 284 - Washington Administrative Code (regulations)

Key RCW Chapters for P&C

ChapterSubject
RCW 48.17Producer licensing
RCW 48.18Insurance contracts
RCW 48.19Rates
RCW 48.22Auto insurance
RCW 48.30Unfair practices

Exam Tip: Remember that Washington's Insurance Commissioner is elected, not appointed. This is frequently tested.

Rate Regulation

Washington uses a "file and use" system for most P&C insurance rates:

How File and Use Works

  • Insurers file rates with OIC before use
  • Rates take effect immediately upon filing
  • OIC reviews rates after they are in use
  • Commissioner can disapprove rates that are:
    • Excessive
    • Inadequate
    • Unfairly discriminatory

Rate Standards

Washington requires that rates be:

StandardMeaning
Not ExcessiveNot unreasonably high for coverage provided
Not InadequateSufficient to pay expected losses and expenses
Not Unfairly DiscriminatoryBased on actuarially justified factors

Prior Approval Lines

Some lines require prior approval:

  • Title insurance
  • Credit insurance
  • Certain specialty lines

OIC Organization

OIC operates through several divisions for P&C insurance:

  • Company Supervision - Monitors insurer financial condition
  • Rates, Forms and Provider Networks - Reviews rates and policy forms
  • Consumer Protection - Handles complaints and inquiries
  • Legal Affairs - Enforcement and rulemaking
  • Agent Licensing - Producer licensing and examination
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Washington P&C Insurance Regulatory Structure
Test Your Knowledge

How is the Washington Insurance Commissioner selected?

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Test Your Knowledge

What rate system does Washington use for most P&C insurance?

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Test Your Knowledge

Which RCW chapter governs producer licensing in Washington?

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