About Us

Landmark Tax and Financial Planning Service is a multi-faceted financial services firm dedicated to a tradition of service and commitment to our clients. The principles of honesty and integrity guide us. We will only recommend a course of action to our clients that we would follow in their situation.


Jim Hasenkamp established Landmark Tax & Financial Planning Services on January 3rd, 1983. Claudia joined in 1989 and in 2005 purchased the tax business from Jim. Landmark Tax has been serving the Pendleton area since the early 80's and is undeniably a local landmark on Court Street not too far from the Round Up grounds.


Specializing in Income Tax Planning, Income Tax Preparation, Retirement Planning, Estate Planning, Bookkeeping, and Payroll Services for small businesses and individuals.