Determining money of the claim.
RCW 6.44.040
in effect(1) The money in which the parties to a transaction have agreed that payment is to be made is the proper money of the claim for payment. (2) If the parties to a transaction have not otherwise agreed, the proper money of the claim, as in each case may be appropriate, is the money: (a) Regularly used between the parties as a matter of usage or course of dealing; (b) Used at the time of a transaction in international trade, by trade usage or common practice, for valuing or settling transactions in the particular commodity or service involved; or (c) In which the loss was ultimately felt or will be incurred by the party claimant.
(1) The money in which the parties to a transaction have agreed that payment is to be made is the proper money of the claim for payment.
(2) If the parties to a transaction have not otherwise agreed, the proper money of the claim, as in each case may be appropriate, is the money:
(a) Regularly used between the parties as a matter of usage or course of dealing;
(b) Used at the time of a transaction in international trade, by trade usage or common practice, for valuing or settling transactions in the particular commodity or service involved; or
(c) In which the loss was ultimately felt or will be incurred by the party claimant.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=6.44&full=trueFetched: 6/28/2026