John F. Coggin CPA, PLLC is a full-service, tax preparation, CPA firm focusing on small business and personal IRS taxation with offices in Houston, Dallas and San Antonio. We provide individual tax preparation with the personalization that software packages cant. We keep up-to-date with the changing tax laws, as well as your changing life events, such as the birth of a child, a new business, new home, or inheritance. As a CPA firm, we adhere to certain ethical standards and codes of professional conduct established by governmental bodies and peer organizations.