522 4th Street, Suite 200, Sioux City, IA 51101

Firm Profile

100+ years of dedication, service and commitment to our clients

King, Reinsch, Prosser & Co., L.L.P. (KRP) was established in Sioux City, Iowa in 1915 by Mr. William Guthrie to provide professional accounting and financial services. A chartered accountant from England, Mr. Guthrie founded our firm to help Siouxland businesses navigate the newly enacted Federal Income Tax Laws.

Over the last 100+ years, KRP has grown and changed significantly. We’ve grown our diverse client base and service area. We’ve grown our expertise to meet the continually changing tax laws and global service needs of our clients. We’ve added hundreds of talented partners and team members who have contributed to our success. And of course, we have undergone name changes over the years.

What hasn’t changed is our professionalism, steadfast dedication to personalized service and commitment to assisting the ongoing success of our clients. In fact, many of our relationships with our clients have developed over decades of service and sometimes generations, all with the goal of ensuring their success. We value our client relationships, both old and new. Our Mission was developed as a guide to serve each and every client to the best of our ability.

KRP partners have specialized expertise in a range of accounting
and financial services. As a valued client, you will have access to any of
these resources when necessary to assure that you are receiving the most up-to-date and accurate information and insight in relation to your business or situation. The lead partner on your account will also oversee a team of highly trained accountants and support staff to assure you of timely and quality service.

Our Mission

The mission of KRP is to provide individual and business clients with the highest quality service in accounting, auditing, tax, investment and financial services. We provide our services with a primary focus on our clients’ welfare, profitability and success. We strive to accomplish our mission by: