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Aronson Gelman & Posner, Inc. is an innovative full-service licensed CPA firm serving clients nationwide in a vast array of industries. We are dedicated to providing our clients with unparalleled professional, personalized services and guidance in a wide range of financial and business needs.

On this website, you will find information about Aronson Gelman & Posner, Inc., including our list of services. We have also provided you with online resources to assist in the tax process and financial decision-making. These tools include downloadable tax forms and publications, financial calculators, news and links to other useful sites. Whether you are an individual or business, Aronson Gelman & Posner, Inc. has years of valuable experience assisting professionals with their accounting needs.

We welcome any questions or comments you may have. Feel free to contact us at any time:


Steven F. Aronson, CPA

1030 N. State St., # 39L
Chicago, IL 60610
Phone: (312) 214-4375
Fax: (312) 787-4381

Robert S. Gelman, CPA

3919 E. Lake Shore Dr.
Wonder Lake, IL 60097
Phone: (847) 433-6100
Fax: (847) 433-6120

Ross A. Posner, CPA

950 Skokie Blvd., Ste. 205
Northbrook, IL 60062
Phone: (847) 291-9950
Fax: (847) 291-9970


Highlights of the New Tax Reform Law

The new tax reform law, commonly called the “Tax Cuts and Jobs Act” (TCJA), is the biggest federal tax law overhaul in 31 years, and it has both good and bad news for taxpayers.

Below are highlights of some of the most significant changes affecting individual and business taxpayers. Except where noted, these changes are effective for tax years beginning after December 31, 2017.