John Fullerton's CPA practice began in 1983 and is located at Third and H Streets in Eureka, California in a Victorian building built in 1891. The first month in business he billed out $25 before expenses. John has since grown the business to consist of almost 100 business clients and over 1,300 individual clients. His practice currently employs seven full-time and two part-time people.

John and his family live in Eureka. The CPA business demands very long hours during tax season. As it is a priority with John, he makes time to contribute to the local community by volunteering his time to several organizations, and going to Cal Courts