Cal. Unemployment Insurance Code § 980

(a) In determining the balance in the Unemployment Fund for the purpose of Sections 977 and 977.5, there shall be excluded all of the following: (1) Any amount credited to this state’s account in the Unemployment Trust Fund pursuant to Section 903 of the federal Social Security Act, as amended, which has been appropriated for expenses of administration other than for capital assets, whether or not that amount has been withdrawn from that fund. (2) Any unexpended advance from the federal unemployment account in the Unemployment Trust Fund received in accordance with Section 323 of this division and Title XII of the federal Social Security Act, as amended. (3) Any amount paid in advance into the Unemployment Fund by an employer under any type of coverage pursuant to which reimbursement of benefits is permitted or required in lieu of the contributions required of employers. (4) Any amount paid in advance into the Unemployment Fund by the federal government under any federal law that requires or permits this state to pay benefits from the Unemployment Fund and provides for advances by the federal government for reimbursement of all or part of those benefits. (b) In determining the balance in the Unemployment Fund for the purpose of Sections 977 and 977.5, there shall also be excluded any estimated or other contributions not legally due and payable with respect to the final calendar quarter of the calendar year, except any payment of contributions made under Sections 976.5 and 1137 and except any payment of contributions by employers terminating business during any calendar quarter.