Cal. Welf. and Inst. Code § 1752.8
The Director of the Youth Authority may deposit any funds of wards committed to the authority in the director's possession in trust with the Treasurer pursuant to Section 16305.3 of the Government Code or in trust in insured bank, savings and loan, or state or federal credit union accounts bearing interest at rates up to the maximum permitted by law, and for the purpose of deposit only, may mingle the funds of any ward with the funds of other wards.
Such funds together with the interest paid thereon may be paid over to the ward upon his or her request, and shall be paid over to the ward upon his or her discharge from the Youth Authority.
Notwithstanding the provisions of this section and Section 1752.81, the Youth Authority may assess a ward's trust fund for actual costs for the ward's support, maintenance, training and treatment.
Ca. Welf. and Inst. Code § 1752.8