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We’ve helped thousands of clients, from start-up business owners to executives of large multinational publicly traded corporations achieve their tax objectives. And we want to help you!

A deep tax technical expertise coupled with decades of real-world practical experience serving some of the most complex businesses across the globe are what make us different from other firms our size. Whether it’s preparing your first Form 1120, or thinking about expanding offshore, OUM can help! Our scalable business tax services can be tailored to fit your unique and growing business needs.

The following is just a small listing of the business tax services we provide.

  • Income Tax Compliance
  • Tax Research and Planning
  • Tax Provision (ASC 740)
  • Mergers and Acquisitions Tax Consulting
  • IRS and State Authority Tax Audit Representation and Tax Controversies
  • Tax Accounting Method Studies and Changes


Warren Chung
Warren ChungPartner – Tax Services
Steve Green
Steve GreenPartner - Tax Services
Dan Sillin
Dan SillinPartner - Tax Services
Brad Weisert
Brad WeisertPartner - Tax Services
Wendy Weiss
Wendy WeissPartner - Tax Services
Jennifer Wong
Jennifer WongPartner - Tax Services