Our Team

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Dennis D. Theis

Dennis joined Maner Costerisan in 1990 upon his graduation from college. As a
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Jeffrey C. Stevens

Jeff joined Maner Costerisan in 1983. As President, he guides the firm’s
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Dave Feenstra

Dave joined Maner Costerisan in 2003 as a consultant in the information
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Diana Mitchell

Diana joined Maner Costerisan in 2013. As a senior manager, she provides tax
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Careers at Maner

Before you commit to a future employer, consider what is important to you: Is it about the name recognition of your company? Being one of the many faces in a stadium full of faces? Your career is about growing as a professional and continuing to enjoy your personal freedoms.
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Timely Opportunities Blog

Selling rather than trading in business vehicles can save tax

Although a vehicle’s value typically drops fairly rapidly, the tax rules limit the amount of annual depreciation that can be claimed on most cars and light trucks. Thus, when it’s
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What Our Clients Have to Say

Mitch Tomlinson, President and CEO, Peckham, Inc.

"I have been working with Maner Costerisan for over 35 years. That fact alone speaks volumes about the confidence I have in their services and the respect I have for their people I
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