Our Team Thomas W. Hammar C.P.A., P.C. is built on a proud tradition of service, technical expertise, and innovative thinking. Our team's experience and credentials give our clients the depth of knowledge you'll find in a larger firm, while our dedication to superior customer service offers the personal, one-on-one approach smaller firms are known for. We have assembled a team of experienced, knowledgable, and friendly professionals. Our team's diverse accounting backgrounds and specialized knowledge are ready to meet your accounting, tax, and payroll needs. Contact us today to let us know how we can serve you! We hope you'll take a few minutes to get acquainted with our team of CPAs!

Thomas Hammar, CPA, MBA Owner Mr. Hammar graduated from Moline High School in 1972 and Augustana College in 1976. He received his MBA from St. Ambrose University in 1989. Tom worked for several other businesses in the accounting field before he purchased this practice in November of 1988. Tom is actively involved in many community activities including his local church and the Rock Island Rotary. Tom resides in Moline with his wife Sue. They have two children who are grown, Molly and John. Email: tom@hammarcpa.com
Bill Karben, CPA Mr. Karben graduated from United Township High School in 1983 and Iowa State University in 1987. He has also taken additional undergraduate and graduate level classes from Western Illinois University and the University of Iowa. Bill has been in public accounting for over 15 years including 11 years with a national accounting firm before joining this firm in 2008. Bill is actively involved in the community and in the profession including being the past president of the local CPA and IMA associations. He currently serves on the board for two local non-for-profits. Bill resides in Moline with his two teenage daughters Taylor and Jordan. Email: bill@hammarcpa.com
Bob Anderson, CPA Mr. Anderson received his B.S. degree in Business from Morningside College in Sioux City, IA. He has over 22 years of pulic accounting experience, as well as 6 years of experience working in the private sector. His main specialties include tax preparation and planning. Bob has been a part of the Tom Hammar team since January 1995. Bob resides in Moline with his wife Alice. Email: bob@hammarcpa.com