Our Vision

We’ve come together to serve our clients through every stage, every idea, every challenge, no matter their size. We’ve expanded specialties while preserving what matters most, your relationship with the professionals you know and trust. Our team now offers a broader range of services, backed by deeper resources and specialized expertise across tax, assurance, advisory, accounting, and private client services—all delivered with the personal attention that has defined our legacy firms for decades.

Our History

Our 27th Street location traces its roots to the founding of KDP, which emerged from the 1976 purchase of Deloitte’s Medford, Oregon office by Daniel Kosmatka. After merging with Dennis Donnelly’s firm and evolving into Kosmatka Donnelly & Co. LLP, KDP steadily expanded its regional presence, including the strategic addition of Boise’s Whittaker & Associates in 2021. The office has continued to grow, fueled by its commitment to quality, client service, and regional depth. As KDP became part of Sorren, this location now benefits from the collaborative strength of a national team with deep Idaho roots.

Our Culture & Community

At our 27th Street location, culture isn’t just something we talk about. It’s how we operate. Our team thrives on collaboration, professional growth, and staying connected to the local community. That spirit has been recognized time and again, with accolades including Accounting Today’s 2024 Regional Leader award and recognition as a Top Workplace in Idaho. These honors reflect more than success; they reflect the values we live by every day. We support our clients like teammates, celebrate our people like family, and show up for our city in meaningful ways. Around here, we don’t just crunch numbers, we elevate people.