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Network Accounting and Tax
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About Us

Network Accounting and Tax  has been providing accounting, tax and financial services to the Chicagoland area since 1985.

We make it a priority to enhance our expertise of the current tax law, complex tax code, and new tax regulations by attending frequent tax seminars. As a licensed CPA firm, we maintain up to date knowledge of the changing tax laws through rigorous continuing professional education requirements. Our team is dedicated to your unique tax situation.


Michael Whalen, CPA

Mike, the firm's founder, is a CPA and earned his Accounting degree from Loyola University in Chicago. He also earned a Masters in Taxation degree from DePaul University and successfully passed all 4 sections of the CPA exam on the initial sitting. He has prepared over 14,000 tax returns in his career and has extensive experience in all areas of Federal and State income tax preparation and compliance, including individual, corporate, partnership and non-profit tax returns. Mike has also represented individuals and corporations before the IRS.

Contact Mike at mwhalen@natcpa.com


Timothy Whalen, EA

Tim is a Senior Tax Accountant with a business degree from Northern Illinois University.  Tim provides comprehensive Federal and State income tax preparation, planning and analysis to our small business owners and individual clients. He is also a Registered Tax Preparer and Enrolled Agent with the Internal Revenue Service. Tim is also a partner in Advisant Financial Services, which specializes in providing accounting/tax services to the local Chicago film industry. Prior to joining Network Accounting & Tax, he worked as a Fixed Income Analyst for BMO Capital Markets in Chicago for over two years where he received numerous awards for leadership and performance.

Contact Tim at twhalen@natcpa.com


Sean Whalen, EA

Sean joined the firm in January 2013 as a Staff Tax Accountant. He earned his undergraduate from DePaul University and has more than four years of experience working for Fortune 100 companies in Chicago as a Business Analyst and in the IT field. In addition to preparing returns, Sean also manages our firm's IT support and procurement.

He is currently studying for the CPA exams and QuickBooks Pro Advisor.

Contact Sean at swhalen@natcpa.com


Inge Whalen

Inge is our Office Manager. She has been with the firm since 1985 and has many years of corporate experience working as an Executive Assistant for a Fortune 100 company in Chicago. She handles all of our operational and office management duties for the company.

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© 2018 Network Accounting and Tax | 1110 W. Lake Cook Rd., St. 265, Buffalo Grove, IL 60089 | Phone: (847) 419-0606 | Fax: (847) 574-7567 | All rights reserved.