Jason Gierhahn, <span class="title">CPA, CFE</span>

Jason Gierhahn, CPA, CFETax Manager

P 630.703.7444 | F 630.581.8301

As a manager in ORBA’s Tax Group, Jason Gierhahn offers strategic tax planning and technical advice to his tax clients, including social service agencies, associations, educational institutions and foundations, credit unions and banks, 401(k) plans, closely held businesses and individuals.

With nearly 20 years of experience, he is adept in preparing and managing financial statement audits, non-profit and corporate tax returns, state and local taxation issues, and assisting clients with their setup to become tax exempt and understanding taxation of flow-through entities, including S corporations.

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Firm News

08.11.25

ORBA Ranked as a 2025 Top 200 Firm by INSIDE Public Accounting
CHICAGO — ORBA, one of Chicago’s largest public accounting firms, has once again been recognized as a 2025 IPA Top 200 Firm by INSIDE Public Accounting (IPA). This marks the eleventh time since 2013 that ORBA has made the list of the country’s top firms. In the IPA’s annual report, ORBA is ranked #113, climbing five spots higher than last year, and is the highest ranked of the six Illinois firms on the Top 200 list.

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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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