The trust accounting handbook is a practical guide created to assist attorneys to comply with recordkeeping standards for client trust accounts. That account is set up so that your bank pays the interest or dividends the account earns to the State Bar.See the Client Trust Account Handbook for a detailed discussion of what funds must be maintained in a trust account. A trust account is simply a special bank account an attorney must maintain. California Heidi Slater Legal Services Trust Fund Program State Bar of California 180 Howard Street San Francisco, CA 94105-1639. Telephone: (415) 538-2249 The ARDC's Client Trust Account Handbook (rev. The ABA is the largest voluntary association of lawyers in the world. Get free legal advice and find a free or lowcost lawyer. State Bar of California.