Kathryn A. McMahon

Kathryn A. McMahon


Kathryn McMahon advocates for her clients and helps to eliminate any uncertainties throughout divorce proceedings. Ms. McMahon focuses on the specific needs of each individual client, and she has been successful in gaining favorable outcomes for her clients when resolving complex financial and custody disputes.

Ms. McMahon is a member of the American Bar Association, the Illinois State Bar Association, the Chicago Bar Association and the Women’s Bar Association of Illinois. She is proficient in French and serves as the Vice President of the Madhatter’s Club and former Co-Chair and Vice President of Membership of the Lookingglass Theatre Associates Board.

While in law school, Ms. McMahon received a certificate in tax law and focused her studies on family law, taxation and trust and estate planning. She was a member of the Loyola University Chicago School of Law mediation team, earning individual and team awards in the 2011 and 2012 International Academy of Dispute Resolution International Law School Mediation Team Tournament. Ms. McMahon was an associate editor of the Loyola University Chicago International Law Review and received the CALI Excellence for the Future Award in appellate advocacy.

Before law school, Ms. McMahon worked for a family law attorney in Wisconsin, and while in law school, she continued her training in matrimonial and family law as a law clerk for a major family law firm in Chicago. Ms. McMahon also gained litigation experience in Illinois state court as a judicial extern for the Honorable Donald J. O’Brien, Jr. (retired), Circuit Court of Cook County, Law Division, and in federal immigration court as a legal intern at the United States Department of Homeland Security, Immigration and Customs Enforcement, Office of the Chief Counsel.

Ms. McMahon joined Katz & Stefani in 2012. She was recognized as an Illinois Rising Star by Super Lawyers in 5 consecutive years (2014, 2015, 2016, 2017, and 2018); the designation is limited to less than 2.5% of lawyers who are fewer than 40 years of age or who have been practicing for 10 years or less in the State of Illinois.  She was also named an Emerging Lawyer by Leading Lawyers in 2017.


Speaking Engagements

  • Tax Law Panel, Loyola University Chicago School of Law, Business Law Society, March 14, 2017
  • Divorce Math Workshop, Lilac Tree, February 15, 2018.
Kathryn A. McMahon
  • Loyola University Chicago School of Law, J.D., Certificate in Tax Law, cum laude, 2012
  • University of Wisconsin, B.A. with distinction, 2007
  • L’Université Paul Cézanne: L’Institut d’Etudes Politiques in Aix-en-Provence, France, political science diploma, 2007
Bar admissions 

Ms. McMahon is admitted to practice in Illinois.