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About Us

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Since April 15, 1979, Dennis A. Quinn & Associates Ltd. has stood firmly behind its core values. For nearly 40 years, our company has proven a dedication to accuracy and integrity; integral characteristics that have clearly helped us withstand the test of time. We are proud to say that DAQ & Associates has become a leader among CPA firms in the greater Chicago area, serving individuals, companies, and organizations within and outside our niche market.

At Dennis A. Quinn & Associates Ltd., we are professionals at what we do. We utilize our knowledge, skills, and years of experience in the financial industry to provide our clients with the highest quality of accounting services that we can provide.

At DAQ & Associates, it is our objective to provide our clients with the highest level of professional accounting services available. We define our success by our client’s success, therefore, developing a lasting personal relationship with our clients is a pertinent matter of our business. The value we bring to the relationship has always been, and will continue to be, that which sets us apart from the rest.

About Dennis Quinn, CPA

  • Graduated with a Bachelor of Science in Commerce from DePaul University.
  • Certified CPA with the State of Illinois
  • Member of the IL CPA Society
  • Began career working part time during college for a small CPA firm.
  • Joined regional CPA firm after college and was admitted to partner in 1979, he then decided to leave to start his own practice.
  • Former president of the Chicago CPA chapter
  • Experience in business mergers and acquisitions
  • Personal and business tax planning, as well as business consulting experience.
  • Real estate accounting and tax planning experience
  • Specializing in family owned business.

About Thomas R. Berg, CPA

  • Has a BA in Business Administration from Lewis University
  • Certified CPA with the State of Illinois
  • Member of the IL CPA Society
  • Over 30 years experience doing accounting and tax for various industries.
  • Specializes in Home Health Care Industry, Computer software Industry, manufacturing companies, financial-services companies and family owned business.

Are you interested in learning more about our firm? Get in touch with us by calling 630-325-0333.