A late fee of one percent per month on the past due amount may be assessed starting on the date the debt becomes past due and until it is paid in full.
Wash. Admin. Code § 173-98-470
Statutory Authority: RCW 90.48.035. 07-14-096 (Order 05-16), § 173-98-470, filed 6/29/07, effective 7/30/07.