The trust accounting handbook is a practical guide created to assist attorneys to comply with recordkeeping standards for client trust accounts. This handbook provides essential guidelines on client trust accounting for California attorneys.The duty to keep a client's funds safe under Rule 1.15 is a personal obligation of the lawyer which cannot be delegated. 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 client trust bank account is set up so that the interest the account earns will be paid to the State Bar of California.