Usury

"(1) Except as provided in subsection (2) of this section, every loan or forbearance of money, goods, or thing in action shall bear interest at the rate of twelve percent per annum where no different rate is agreed to in writing between the parties: PROVIDED, That with regard to any transaction heretofore or hereafter entered into subject to this section, if an agreement in writing between the parties evidencing such transaction provides for the payment of money at the end of an agreed period of time or in installments over an agreed period of time, then such agreement shall constitute a writing for purposes of this section and satisfy the requirements thereof. The discounting of commercial paper, where the borrower makes himself or herself liable as maker, guarantor, or indorser, shall be considered as a loan for the purposes of this chapter. (2)(a) Prejudgment interest charged or collected on medical debt, as defined in RCW 19.16.100, must not exceed nine percent.
(b) For any medical debt for which prejudgment interest has accrued or may be accruing as of July 28, 2019, no prejudgment interest in excess of nine percent shall accrue thereafter.
(3) A lease shall not be considered a loan or forbearance for the purposes of this chapter if:
(a) It constitutes a ""consumer lease"" as defined in RCW 63.10.020;
(b) It constitutes a lease-purchase agreement under chapter 63.19 RCW; or
(c) It would constitute such ""consumer lease"" but for the fact that:
(i) The lessee was not a natural person;
(ii) The lease was not primarily for personal, family, or household purposes; or
(iii) The total contractual obligation exceeded twenty-five thousand dollars. (RCW 19.52.010)

(1) Except as provided in subsection (4) of this section, any rate of interest shall be legal so long as the rate of interest does not exceed the higher of: (a) Twelve percent per annum; or (b) four percentage points above the equivalent coupon issue yield (as published by the Board of Governors of the Federal Reserve System) of the average bill rate for twenty-six week treasury bills as determined at the first bill market auction conducted during the calendar month immediately preceding the later of (i) the establishment of the interest rate by written agreement of the parties to the contract, or (ii) any adjustment in the interest rate in the case of a written agreement permitting an adjustment in the interest rate. No person shall directly or indirectly take or receive in money, goods, or things in action, or in any other way, any greater interest for the loan or forbearance of any money, goods, or things in action.
(2)(a) In any loan of money in which the funds advanced do not exceed the sum of five hundred dollars, a setup charge may be charged and collected by the lender, and such setup charge shall not be considered interest hereunder.
(b) The setup charge shall not exceed four percent of the amount of funds advanced, or fifteen dollars, whichever is the lesser, except that on loans of under one hundred dollars a minimum not exceeding four dollars may be so charged.
(3) Any loan made pursuant to a commitment to lend at an interest rate permitted at the time the commitment is made shall not be usurious. Credit extended pursuant to an open-end credit agreement upon which interest is computed on the basis of a balance or balances outstanding during a billing cycle shall not be usurious if on any one day during the billing cycle the rate at which interest is charged for the billing cycle is not usurious.
(4)(a) Prejudgment interest charged or collected on medical debt, as defined in RCW 19.16.100, must not exceed nine percent.
(b) For any medical debt for which prejudgment interest has accrued or may be accruing as of July 28, 2019, no prejudgment interest in excess of nine percent shall accrue thereafter. (RCW 19.52.020)

Profit and nonprofit corporations, Massachusetts trusts, associations, trusts, general partnerships, joint ventures, limited partnerships, and governments and governmental subdivisions, agencies, or instrumentalities may not plead the defense of usury nor maintain any action thereon or therefor, and persons may not plead the defense of usury nor maintain any action thereon or therefor if the transaction was primarily for agricultural, commercial, investment, or business purposes: PROVIDED, HOWEVER, That this section shall not apply to a consumer transaction of any amount.
Consumer transactions, as used in this section, shall mean transactions primarily for personal, family, or household purposes. (RCW 19.52.080)"