“We create trusting relationships.”

At KDP Certified Public Accountants, LLP we believe the most important financial decision a business or individual can make is the  selection of an accounting firm. We take your trust in us very seriously. Any firm can produce a financial statement, but not every firm understands the weight of client trust and puts the kind of care into analyzing your financial situation like we do.  That’s because we examine your financial picture as carefully as we do our own. We look beyond the bottom line and we use our experience to evaluate what the numbers really say about your financial situation.


Since 1976

KDP Certified Public Accountants, LLP grew out of the firm begun In 1976 by Daniel Kosmatka and later joined by Dennis Donnelly under the name Kosmatka Donnelly & Co. LLP. Dan and Dennis presided over this thriving practice until 2014, when they merged with Michael L. Piels CPAs, LLP —another thriving firm under the leadership of Mark Damon, Robert Hague and Stewart Parmele— to form KDP Certified Public Accountants, LLP. In 2021, Whittaker & Associates, Inc. in Boise, Idaho, joined KDP, extending our physical footprint to the Idaho market.


In 2021, we joined the RSM US Alliance, an alliance of independently owned CPA firms across the United States and Canada, with global affiliations. Our membership in RSM gives us access to the resources of the fifth largest CPA firm in the United States, as well as the vast member network of affiliated firms. This helps us to give our clients the care and attention of a locally focused firm, with the thought leadership, experience and support of a global organization. Our combined expertise created a firm that provides all the services you need in one place: accounting services, audit and assurance, financial and business planning and advice, tax compliance and planning services, computer and Internet consulting, computer accounting services, and even financial services planning. We offer inventive suggestions and insightful advice with one goal in mind: helping you succeed.