Giersch Milwaukee Bookkeeping for Business
A Tradition of Excellence.

Peter Giersch

Peter Giersch

Managing Director

In 2016, Peter founded the Giersch Group to be a full-service bookkeeping and consulting firm specializing in small businesses and nonprofits. Since then it has grown to seven figures in revenue and hundreds of clients. Peter is responsible for all aspects of the firm as well as occasional consulting assignments. He recently served as the Interim-CFO for a $20M construction company that had not had an audit or closed their books in 2 years. In less than a year, he rebuilt the accounting team, got the books cleaned up which allowed the CPA firm to finish both audits, while at the same time managing the bank relationship for several large loans that were out of covenant, seeing those to successful restructuring. Other assignments of interest include Interim Executive Director for Holy Hill, National Shrine of Mary, President of National Bible Association and Interim President of Aquinas Academy.

Prior to the Giersch Group, for nearly 20 years, Peter was a management consultant to small businesses and nonprofits as a co-founder of Cathedral Consulting Group with offices in Milwaukee, New York and New Jersey.

Peter has degrees from UWM and Marquette and has been on the board of the Milwaukee Symphony Orchestra, the University Club of Milwaukee and the Archdiocesan Advisory Council, among others. Peter has earned the Certified Small Enterprise Advisor certification and also the financial advisor 6 & 63 certifications. He was recognized as a 40 Under Forty winner by the Milwaukee Business Journal in 2003. He and his wife, Carole, have five children.

Read more about Peter Giersch


Academic Development Corporation  
New York, New York 2013
Certified Small Enterprise Advisor Certification  


Catholic Financial Services Corporation  
Milwaukee, Wisconsin 2004
Financial Services Certification, Series 6 & 63  


University Club of Milwaukee Board of Directors 2010 to 2012
Milwaukee Symphony Orchestra Board of Directors 2003 to 2011
Rotary Club of Milwaukee, Foundation Committee 2002 to 2006
Young Life Milwaukee Executive Committee 2000 to 2002
Archdiocesan Pastoral Council, Milwaukee 1995 to 1996
St. Vincent de Paul Society, Riverwest Chapter 1993 to 1996


Day by Day with St. Francis, Catholic Book Publishing Company, Released November 2015

The Catechism Day by Day, Catholic Book Publishing Company, Released April 2006

Equipping the Saints:  A Guide to Giving to Faith-Based Organizations,
Appendix: “How to choose a Philanthropic Advisor,” Fall 2004

The Gathering, “Passing on Family Values to the Next Generation,” Spring 2004

Rev. Magazine, “A Time To Retreat.” Cover Story, September 2002


Best of Milwaukee Award: Consulting Category 2018
Best of Milwaukee Award: Consulting Category 2017
Wisconsin Remodelers Association Spirit of Education Award 2016
Milwaukee Business Journal 40 under 40 Award 2003
National Endowment for the Humanities Scholar 1995

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