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Serving You A Bright Future

Service companies come in a wide variety of types:

  • Professional services (accountants, physicians, pharmacists, dentists, attorneys, architects, civil engineers, financial advisors, etc.)
  • Business services (marketing, advertising, mailing services, IT support, consulting, training, recruiting, etc.)
  • Counseling services (marriage, weight loss, career planning, pastoral, psychiatric)
  • Transportation services (trucking, busing, taxicab service, limousine service, car rental, etc.)
  • Personal services (pet grooming, catering, photography, realtors, wedding planning, etc.)
  • Social services (individual and family services, child day care, residential care)
  • Maintenance services (landscaping, plumbing and electrical, equipment service, automobile service, extinguisher inspection, etc.) 

But we all have something in common - each of us devotes time and money to providing high quality services for our clients. With service being the foundation of our business, we understand that your accounting, tax and business needs are sometimes complicated.

Specialized Services


"I have been a client of Dugan & Lopatka for 40 years. During that time we have had 10 different entities that Dugan & Lopatka has provided accounting services to.  The benefit to me is that during that time we have never gone through an audit or tax penalty. With all of the changes in businesses and tax codes, we could not have done it without Dugan & Lopatka.  Thanks again for being there when I needed your help." - Donald Westmaas

"Dugan & Lopatka is the best firm I have ever dealt with.  I had worked with several firms before and their services were nowhere near Dugan & Lopatka's.  My decision of switching to Dugan & Lopatka is one of the best decisions I ever made in my 25 years of cinducting business.  I would highly recommend Dugan & Lopatka as a reputable accounting firm in our great Chicago area.  I am very grateful that I have finally found Dugan & Lopatka and I will never leave this firm."  -- Zhen Wang, JNK Corporation 

"We have worked with Dugan & Lopatka for over 20 years now.  They taught us how to be proactive with our accounting so that we could be educated on our business.  Dugan & Lopatka provides way more than a service; they also create bonds and friendships and that is priceless.  They are clearly one of the best companies I have had the pleasure to work with."  -- Christine Lies, Interior Design Group

"Dugan & Lopatka Certified Public Accountants & Consultants deserve 4 STARS for their -- professionalism and integrity, up-to-date knowledge of accounting, laws and regulations, attention to detail and accuracy, responsiveness to clients, accuracy, timeliness of delivery, and technology and delivery system updates.  Our business and personal accounts have been both handled by Dugan & Lopatka for 25 years.  Not only are we satisfied with their services and value, but we also would eagerly recommend them to any business or individual seeking professional accounting services." -- Greg Weimer, Minuteman Press (Weimer Design & Print, Ltd.)


Contact Dugan & Lopatka today at (630) 665-4440.

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By Dugan Lopatka - Accountants for Midsize Businesses in Chicago:  CPAs for Small Businesses

  • Addison
  • Aurora
  • Bartlett
  • Batavia
  • Bensenville
  • Bloomingdale
  • Bolingbrook
  • Burr Ridge
  • Carol Stream
  • Chicago
  • Clarendon Hills
  • Darien
  • Downers Grove
  • Elgin
  • Elk Grove Village
  • Geneva
  • Glen Ellyn
  • Glendale Heights
  • Hanover Park
  • Hinsdale
  • Hoffman Estates
  • Itasca
  • Joliet
  • Lemont
  • Lisle
  • Lombard
  • Montgomery
  • Naperville
  • North Aurora
  • Oakbrook
  • Oakbrook Terrace
  • Oswego
  • Plainfield
  • Romeoville
  • Roselle
  • St. Charles
  • Schaumburg
  • Streamwood
  • Villa Park
  • Warrensville
  • West Chicago
  • Western Springs
  • Westmont
  • Wheaton
  • Willowbrook
  • Winfield
  • Wood Dale
  • Woodridge

Dugan & Lopatka, CPAs, PC, 104 E. Roosevelt Road, Wheaton, Illinois 60187 -MAP- T: (630) 665-4440 Fax: (630) 665-5030