John Keller CPA | Nonprofit Accounting | Indianapolis IN

About John

As a Senior Manager in the tax services group, John utilizes his extensive accounting experience to help his clients navigate their unique tax situations. John is a key member of the not-for-profit team, where he helps organizations maximize their resources, taking their mission further while remaining in compliance with the often complex tax challenges they face.

Beyond the not-for-profit space, John’s tax talent ranges from individuals to C-Corps, S-Corps, and partnerships. For these clients, he specializes in multi-state tax issues and federal and state tax depreciation rules. He also serves the firm’s medical professional services clients, a niche that requires familiarity with the inner structure and tax requirements for healthcare entities.

John is a member of the American Institute of Certified Public Accountants (AICPA) and the Indiana CPA Society.

John graduated from Ball State University in 2001 with both his Bachelor of Science and Master of Science in Accounting, immediately joining the Greenwalt CPAs team and becoming a Barnes Dennig Senior Manager when the firms merged in early 2025.

Our Barnes Dennig team helped ensure we started with a good clean set of internal controls and practices that have been extremely important as we moved forward and grew significantly. We all learned the importance of internal controls, future thinking, clear policy statements, and good board communication from our early experiences with them.

— Jenny O., CEO

Very professional, good communicator and explainer, deep knowledge of his trade.

— Barnes Dennig Client

I am working with knowledgeable and personable people who I can talk to and ask questions of. They always listen and respond in a helpful and informative way.

— Doug S., CFO

The Barnes Dennig team has been and will continue to be a trusted business partner. I like their practical approach and the team is always ready and available to provide insights and assistance on a wide range of topics. Well done.

— Barnes Dennig Client

They understand and care about our work. Always responsive to our needs and supportive of our team's new accounting staff who were working on the audit for the first time.

— Dimity O., Executive Director
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