2005 Washington Revised Code RCW 39.76.010: Interest on unpaid public contracts — Timely payment.

(1) Except as provided in RCW 39.76.020, every state agency and unit of local government shall pay interest at the rate of one percent per month, but at least one dollar per month, on amounts due on written contracts for public works, personal services, goods and services, equipment, and travel, whenever the state agency or unit of local government fails to make timely payment.

     (2) For purposes of this section, payment shall be timely if:

     (a) A check or warrant is mailed or is available on the date specified for the amount specified in the applicable contract documents or, if no date is specified, within thirty days of receipt of a properly completed invoice or receipt of goods or services, whichever is later.

     (b) For any amount which is required to be withheld under state or federal law, a check or warrant is mailed or is available in the proper amount on the date the amount may be released under the applicable law.

[1981 c 68 § 1.]

Application -- 1992 c 223: See RCW 39.04.901.