Our Story

In 1954, founder G. Victor Herro, had a passion to help family and friends with their tax and accounting needs. His success was built on fostering relationships and providing the best possible tax and accounting advice. Victor felt that communicating well with clients and educating them was another key to success. He quietly grew his practice and in 1975, he moved his business to the Germantown, Wisconsin area. His passion of providing superior service to his clients was passed to his son George and also daughter Jennifer. Now at 83 years old, Victor still comes to the office, providing timeless input to the team. George joined the firm in 1984 and Jennifer in 1987, taking over the bulk of clients and workload.


We work with you on a personal level to determine the best solutions for your unique needs, then leverage our seasoned expertise to achieve the best possible results.


We strive to be your trusted partner in success. Our firm is large enough to offer a full range of professional services at a fair price, but small enough to give you the individual attention that you deserve.


Rest assured that when a need arises, our firm is ready and capable to handle everything for you so you can focus on what matters most to you.

Our Team

Victor Herro:
Since starting in 1954 and after all these years, I still like helping our clients solve their tax problems. It is what I do best.

George Herro:
For the past 35 years, I have been truly blessed to work side by side with my father and sister. I like learning about our clients, not just about their business or tax dynamics but also, about them personally. I like collaborating with my peers and other professionals. I am married to my best friend Nancy and we celebrate life each day with our two children.

Jennifer J. Setterlun:
I have been practicing with George and Dad since 1987 and I still have a great passion to help people. I am married and have two amazing boys. I enjoy volunteering with our local food pantry and St. Ben’s meal program. I love to play golf, walking, hiking and simply just being with family and belly laughing with friends.

Susan Kornel:
I joined the Herro team in 2007. My co-workers and clients have become family to me. I am married and have three children and two beautiful granddaughters. Spending time with my family and friends is what really gives me joy in life.

Kay Gross:

Kathy Schmidt:
I started working at George Herro, CPA in August of 2018.  Every day is FUN!  I meet people, get the opportunity to help them, and get to learn from and be a part of a family of people that are truly the best in the business.  I graduated from University of Wisconsin Milwaukee with a BBA in Accounting.  I became a licensed CPA in 1996.  When I am not here, my husband and two boys and I enjoy anything and everything OUTDOORS!

Karen Malliet:

Community Involvement

We are dedicated and committed to the greater Germantown area and surrounding communities. We have been active in the Germantown Chamber of Commerce and Kiwanis Club. We also serve in many local countywide civic organizations. We are members of the Institute of Management Accountants and the National Association of Tax Preparers.