Greg Koelling, <span class="title">CPA</span>

Greg Koelling, CPAHe | HimDirector

P 630.703.7444 | F 630.581.8301

Greg Koelling has been with ORBA since 2001, working in both the audit and tax groups. He is a Director and a member of the Executive Board. Over the course of his career, Greg has gained extensive experience serving individuals, partnerships and privately-held corporations. His specialties include federal and state tax planning and consulting for owners and key executives. In addition, he represents taxpayers in front of the Internal Revenue Service and state taxing authorities.

Greg specializes in tax planning and compliance strategies for multi-state businesses, investment companies and real estate entities. He also helps clients with sales, mergers and acquisitions and compensation planning. Greg works closely with many real estate, finance, investment and professional service businesses.

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Firm News

05.09.25

ORBA Recognized with Workplace Culture Excellence Award at BDO Alliance USA EVOLVE 2025 Conference
CHICAGO – ORBA, one of Chicago’s premier public accounting firms, is proud to announce that it has been awarded the Workplace Culture Excellence Award for 2025, presented by the BDO Alliance USA. The BDO Alliance Workplace Culture Award is an honor that celebrates firms that cultivate exceptional employee engagement, provide meaningful growth opportunities and prioritize well-being across the board.

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seminars & events

Guides

ORBA will gladly provide you with hard copies of the useful guides listed below. Select which guides you would like to receive and submit the form below.

  • Tax Pocket Guide
  • Tax Planning Guide
  • Records Retention Schedule
  • Auto, Travel & Business Log

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