Wash. Admin. Code § 192-550-020
(2) The total amount of the penalty will be equal to the entire balance of premiums not remitted and any interest accrued on those delinquent premiums.
Example: If an employer owes $300 in premium payments and $20 in interest, the penalty for willfully failing to remit payment will equal $320, for a sum total due and owing of $640.
[Statutory Authority: RCW 50A.05.60 [50A.05.060] and 50A.25.030. WSR 20-01-087, § 192-550-020, filed 12/12/19, effective 1/12/20. Statutory Authority: RCW 50A.04.215. WSR 18-22-080, § 192-550-020, filed 11/2/18, effective 12/3/18.]