Greg Koelling, CPA

Greg Koelling, CPA

P 312.670.7444 | F 312.670.8301

Greg Koelling has been with ORBA since 2001, working in both the audit and tax departments. 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 state tax planning and compliance strategies for multi-state businesses. He also helps clients in the health care field with tax planning, compensation methods and strategic assistance with mergers and acquisitions. Greg also works closely with many real estate development, contracting, manufacturing and distribution, advertising/PR and professional service businesses.

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Firms News


ORBA Ranked Among Crain’s 2019 Largest Accounting Firms
CHICAGO — Ostrow Reisin Berk & Abrams, Ltd. (ORBA), a full-service accounting, tax and business consulting firm, has been ranked as one of the largest accounting firms in Chicago, according to an annual survey published by Crain’s Chicago Business. This year, ORBA ranks as the 18th largest accounting firm with 151 professional staff members.

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Media Mentions




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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