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Retro Program Rules

Rules Governing the Retrospective Rating Program

The rules governing the Retrospective Rating Program can be found in the Washington Administrative Code (WAC) on the Code Reviser's website (

Pilot rulemaking project

For documents and other information regarding the pilot rulemaking project for common ownership, go to Retro Pilot Rulemaking Project.

Insurance tables study

For documents and other information regarding the study of insurance tables charges, go to Retro Insurance Tables Study.

Have questions?

Contact Retro staff for help.

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