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.Users will find practical instructions for compliance with the State Bar of California's regulations. Get Client Trust Handbook Form. In this guide, we will explore the importance of client trust accounts and provide an overview of how you should set up and maintain them. The State Bar of California, Handbook on Client Trust Accounting for California Attorneys.