Welcome to Olsen, Muhlbauer & Co., L.L.P. Our main office, located in Carroll, Iowa, is staffed with seven Certified Public Accountants, two staff accountants and three support staff. Since 1967, we have been providing a full range of services to our clients – including income tax preparation, audits, reviews, compilations, payroll processing, and bookkeeping. In addition, we also have several partners qualified to provide peer review services to fellow CPA’s. Please take a look around our site and then give us a call. We look forward to hearing from you!