Cal. Gov. Code § 13332
The Controller, at the request of a state institution, department, board, bureau, commission, officer, employee or other agency for which an appropriation is made, may transfer, under procedures established by the Department of Finance, up to 10 percent of any appropriation made to each entity, to an account established for each entity within the State Expenditure Revolving Fund, which is hereby created for the purpose of the payment of payroll and other claims which costs are to be subsequently charged to the appropriations made to each entity in accordance with any provisions or schedule set forth in the appropriations. No transfers in excess of 10 percent from any one appropriation may be made without the prior joint approval of the Department of Finance and the Controller.
All state entities shall submit, to the Department of Finance, a statement of financial adjustment to the State Expenditure Revolving Fund no later than 30 days following the transaction month. No state entity shall deposit funds in the State Expenditure Revolving Fund from local assistance or capital outlay appropriations or in excess of 10 percent of any appropriation made to the agency unless prior approval is given by the Director of Finance and the Controller.
Notwithstanding Sections 16310 and 16314, the Controller may transfer, as necessary, from the State Expenditure Revolving Fund to the General Fund whatever amounts are needed to meet cash needs of the General Fund. The Controller shall return all moneys so transferred without payment of interest as soon as there are sufficient moneys in the General Fund.
Transfers made by the Controller shall be available for the same term as the appropriation from which the transfer was made. All undisbursed funds shall be returned to the appropriations from which they are transferred and are subject to Section 16304.1.
Ca. Gov. Code § 13332