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Our Team

James W. Carlson, CPA

Managing Partner

Jim joined McMahon-Veltus, SC in August of 1991 after completing his bachelors degree at the University of Wisconsin - Whitewater. Jim is the current managing partner of the firm and manages the Union Grove and Burlington offices.  His interest outside of work include woodworking, shooting and hunting.

E-mail Address:



A. Jarod Pobst, CPA


Jarod joined McMahon-Veltus, S.C. in August 2017, and is a partner with the firm.   After graduating magna cum laude from the University of Wisconsin – Whitewater, Jarod first joined Schenck, S.C. (now CliftonLarsenAllen) in Milwaukee working heavily in corporate taxation and specializing in trust, estate, and high net worth individual taxation.  In his free time, he enjoys movies, skiing, and relaxing at his home in Burlington with his spouse and three stepchildren.

E-mail Address:



Gregory J. Veltus, CPA

Founding Member

Greg has been with McMahon-Veltus, SC since 1976 and is an original member of the firm.  He graduated from the University of Wisconsin - Whitewater in 1976 and from St. Catherine's High School in 1972. He is past president of the local chapter of the National Association of Accountants and the Union Grove Greater Chamber of Commerce. He was a trustee for 12 years at St. Robert Bellarmine Catholic Church in Union Grove. Greg has four wonderful children. Emily is working for Doctors without Borders and studying Medicine at UW-Madison. Kristin is a Financial Recruiter for Baker Tilly Search and Staffing. Kaleigh is an Associate Product Manager at Uline.  Kevin is a Sales Representative for Vomela Transportation. Greg enjoys hunting, fishing, and all outdoor activities.

E-Mail Address:


Brian J. McMahon, CPA

Founding Member, Retired 

Brian had been with McMahon-Veltus, SC and Meier, Clancy, George and Company for 57 years until his retirement in July of 2019. He graduated from the University of Wisconsin - Whitewater in 1960 and from Westfield High School in 1955. He is past president of Point West Business Association, Union Grove Lions Club and is currently president of Union Grove Community Foundation. He was treasurer of Racine Founders Rotary Club for ten years and is a current member. He was chairman of the finance committee of St. Roberts Church for 20 years. He is married to Cheryl with whom he has four children and five grandchildren. His hobbies include golf and racing standard bred horses.


Lynn Raguse


Lynn has been with McMahon-Veltus, SC since 1989. She previously worked for Smith, Demuth & Black in Lake Geneva from 1975 until 1988, and for Ed Stone from 1988 until his firm was bought out by McMahon-Veltus SC in 1989. She graduated from the University of Wisconsin - Whitewater in 1975, graduating Cum Laude.

Lynn has been actively involved in her community serving as treasurer for Providence Catholic School, Secretary of Finance Committee for St. Francis Xavier Church, and Racine County 4-H Treasurer, and Racine County 4-H representative for State Congress.

Lynn is also a proud mother of two sons. Alan Raguse is the owner of Allstate Insurance Agency in Woodstock, IL.  Joseph Raguse is a CPA and Chief Financial Controller for Data Dimensions in Janesville, WI.

E-mail Address:



Aimee Potter

Payroll Specialist

Aimee joined McMahon-Veltus in October 2021. Before joining our team, Aimee was a Payroll Specialist for Letsch Staffing Services, LLC. Aimee is a Racine local and enjoys any kind of water-related activities in her free time.

E-mail Address:



Kim Schmidt

Racine Office Reception

Kim has been with McMahon-Veltus, SC since 2019. Before McMahon-Veltus, she worked for 15 years as a secretary for Schultz Grading & Excavating and then for another 15 years with Jerry's Grading & Excavating.  Kim also worked for 14 years doing patient registration and scheduling for Wheaton Franciscan Medical Group.  When possible, Kim enjoys spending her time at the cabin up north.

E-mail Address:


Nancy Grasser
Bookkeeper in Union Grove Office


Karen Nelson

Union Grove Office Reception

Karen joined McMahon-Veltus in January of 2018. She is married to Mark, and they have two daughters, Nicole and Rachel.  Karen and Mark also have three grandkids, Kaleb, Beverly, and Easton.  In her free time, Karen enjoys spending time with family, cooking, gardening, auctions, 4-wheeling, and shooting pool on the Women's Pool League.  She also likes spending time caring for her dog, cat, chickens, and bees.

E-mail Address:



Donna Lane
Bookkeeper & Tax Preparer

Donna was employed by John B. Moe in 1987 to do bookkeeping, income tax preparation, and accounts receivable. Her interests include camping, snow skiing, and motor-cycle riding.

E-mail Address:


  • McMahon - Veltus, S.C.
  • 7033 Washington Ave Ste 103
  • Racine, WI 53406
  • Telephone: (262) 886-3536
  • Fax: (262) 886-5056