Chicago Accounting Firm Dugan Lopatka CPAs

International Expertise, Local Presence



Our firm is a member of a global alliance of independent accounting firms located across the globe called INPACT. The members of INPACT, located in over sixty countries worldwide, are full service firms ready to assist in your company’s international expansion We have local firms in the countries you want to enter who are ready to advise and guide you into their markets.


  • Nearly 150 firms
  • In over 60 countries
  • In over 200 offices
  • Generating US$320 million in Fees
  • With approximately 3,000 professionals
  • Speaking 28 different languages
  • Ranked 15th in the 2011 IAB World Survey



As your company continues to expand your customer and vendor bases globally, the need for access to local expertise also grows. You need a local Chicago advisor who is knowledgeable and competent to guide your through the pitfalls of your global expansion and handle your business concerns.

Why Use Us?

Personal Attention

Be a big fish in a small pond.  Dugan & Lopatka is a mid-sized CPA firm and understands the needs of small and mid-sized companies.

Reasonable Fees

Dugan & Lopatka is an independent firm and as such our fees reflect our smaller structure. 

Quality Service

Dugan & Lopatka’s professionals know how to help.  They have the same technical skills and knowledge in their local markets as the large international accounting firms. 

Global Network

Dugan & Lopatka is a member of INPACT North America, geared to helping accounting firms identify more successful methods to manage and market what they do .

You can be confident that Dugan & Lopatka has the expertise, experience, and resources to handle any U.S. or international tax and accounting issue that you may face.

Link to Inpact Group website directory.


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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