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About Us

General Practice Philosophy

As a Certified Public Accounting Firm we are dedicated to practicing in accordance with the highest ethical and professional standards. It is this dedication to quality and service that will assure our client's individual needs are satisfied.

The choice of an accounting firm should be based on the ability of the firm to perform the required services competently and for a reasonable fee. Many accounting firms can meet this criterion. Your task is to select one firm that can go beyond simply fulfilling service obligations and offer its clients personal attention of the account executive and financial guidance tailored specifically to client needs. We are that firm. Our firm philosophy emphasizes the individuality of clients and the unique nature of each business operation. We are committed to providing our clients with quality, professional service at a reasonable cost; service which includes imaginative, constructive suggestions to help the client achieve business and personal goals.

Our role as Certified Public Accountants will go beyond objectively appraising our client's financial position. We can provide assistance concerning internal operating systems and controls and sound financial management, not just as a goal but as a tool for daily operations. We also have the necessary tax planning experience to ensure that no important tax advantage is overlooked or under-assessed.

As a progressive accounting firm we recognize that our involvement cannot be limited to our profession and client services but must extend to include contributions to the welfare of the communities in which we live. This is accomplished by maintaining a working knowledge of the local business climate and setting an example of quality service, professionalism and integrity. Our clients are the prime beneficiaries of this commitment.

Clients of Duffner & Company P.C. receive the benefit of our expertise on an on-going basis. We emphasize personal contact of the account executive and thus direct involvement in all the accounting functions relating to their operation. Client business operations are closely monitored and assessments are made or adjusted depending on those needs. Our goal is the success of our clients and toward that end; we enter into a partnership committed to that success.

Our Team

William J. Duffner, C.P.A., M.S.T.

Professional Experience:

  • Associated with two international Public Accounting Firms for six years.
  • Thirty years practicing in the present firm.

Educational Experience:

  • Depaul University
  • Kellstadt Graduate School of Business
  • Master of Science Degree in Taxation
  • MillikinUniversity
  • Decatur, Illinois
  • Bachelor of Science Degree in Accountancy and Economics in June 1974
  • Received CPA certificate in November 1979

Professional Activities:

  • Certified Public Accountant, Illinois
  • American Institute of Certified Public Accountants
  • Illinois Society of Certified Public Accountants
  • Past Member ICPAS state wide Committee on Tax Course Development & Special Programs
  • Past Member ICPAS Chicago South Chapter Tax Committee
  • Member - Beverly Morgan Park Businessman Association
  • Past President - Beverly Area Local Development Corporation
  • Member of the Illinois CPA Society Peer Review Executive Committee
  • Illinois CPA Society's representative to the AICPA National Peer Oversight Committee 1994-1997

Patrick T. Duffner, C.P.A.

Professional Experience:

  • Six years with current firm
    • Completed three summer internships with Duffner & Company, P.C. as well as a full time tax internship from January - April 2006 with Pry Professional Group Certified Public Accountants in Findlay, Ohio

Educational Experience:

  • Graduated from Bowling Green State University in December 2006, Bowling Green, Ohio
  • Bachelor of Science Degree in Accountancy
  • Currently enrolled in the Masters of Taxation at DePaulUniversity. To be completed in November 2013.
  • Received CPA certificate in June 2012.

Professional Activities:

  • Certified Public Accountant, Illinois
  • American Institute of Certified Public Accountants
  • Illinois Society of Certified Public Accountants

Glenda D. Nally

  • Ten years with Duffner & Company, P.C.
    • Assisting in the preparation and analysis of monthly financial statements for over 60 McDonalds Restaurants performed both in house and at client’s sites.
    • Manages firm’s office and computer systems
    • Supervises employees involved in the accounting and back office services provided to clients
    • Assists in the data entry of tax returns

  • Ten years as Office Manager for a ten store operation of a McDonalds Franchisee whose accounting services were performed by Duffner & Company, P.C.
    • Accounts Payable - Completed and oversaw the bill paying process for 10 McDonalds Restaurants as well as the Management Company.
    • Payroll - Process payroll checks and make tax deposits for over 600 employees on a bi-weekly basis. Printed W-2's for the same employees.
    • Preparation of monthly financial statement documentation to be sent to accountant.

Megan T. Haggerty

  • Graduated Cum Laude from Butler University with a Bachelor of Science in 2001
  • Responsible for the completion of quarterly payroll tax returns for selected clients
  • Four years with Duffner & Company P.C. on office support staff concentrating on firm's own accounting operations.

Stacy Dugger

  • Received Associates Degree in Business from Moraine Valley Community College
  • Chargeback Specialist/Purchasing Agent for Chemcentral in Bedford Park, IL for two years
    • Completed daily gross profit analysis by reconciling sales for the Midwest region to sales receipts for a range of gross profit percentages
  • Five years of accounting and bookkeeping services with Duffner & Company P.C. and Regency Exposition Services
    • Assisting in the compilation and analysis of financial statements for over 60 McDonald franchises and the related management companies.
    • Customer relations-directing client requests