A Certified Public Accountant Firm (CPA firm) is simply a firm that is licensed in the state in which they operate and owned, at least in part by a Certified Public Accountant. CPA firms are comprised of auditors who conduct both public and private audit engagements. Apart from the auditors CPA firm usually consists of people at various levels in their accounting career. Hence, CPA firm consist of staff accountants and seasoned accountants who are experienced in all aspects of accounting. Most CPA firms, are auditing firms and seldom provide tax and accounting for the general public. While remaining CPA firms provide only tax and accounting services.