California Code, Code of Civil Procedure - CCP § 676.7

(a) Except as provided in subdivision (c), a judgment or award on a foreign-money claim shall be stated in an amount of the money of the claim.

(b) A judgment or award on a foreign-money claim is payable in that foreign money or, at the option of the debtor, in the amount of United States dollars which will purchase that foreign money on the conversion date at a bank-offered spot rate.

(c) Assessed costs shall be entered in United States dollars.

(d) Each payment in United States dollars shall be accepted and credited on a judgment or award on a foreign-money claim in the amount of the foreign money that could be purchased by the dollars at a bank-offered spot rate of exchange at or near the close of business on the conversion date for that payment.

(e) A judgment or award made in an action or distribution proceeding on both (1) a defense, setoff, recoupment, or counterclaim and (2) the adverse party's claim, shall be netted by converting the money of the smaller into the money of the larger, and by subtracting the smaller from the larger, and specify the rates of exchange used.

(f) A judgment substantially in the following form complies with subdivision (a):

(g) If a contract claim is of the type covered by subdivision (a) or (b) of Section 676.5, the judgment or award shall be entered for the amount of money stated to measure the obligation to be paid in the money specified for payment or, at the option of the debtor, the number of United States dollars which will purchase the computed amount of the money of payment on the conversion date at a bank-offered spot rate.

(h) A judgment shall be entered in foreign money in the same manner, and has the same effect as a lien, as other judgments. It may be discharged by payment.