Our Team

























Kollath CPA is a team of dedicated tax and accounting professionals who are passionate about helping their clients succeed. We utilize the latest technology to provide one-on-one service, and are focused on helping businesses, nonprofits and individuals reach their goals.


Our Brookfield Team

Mike Brand, CPA, Manager

Carol Van Duser, CPA

Julie Brand, Tax Preparer 

Our Middleton Team

Mike Kollath, CPA, Partner
Mike Brand, CPA, Partner

Aimee Kent, Accountant
Bob Steinich, Senior Accountant

Bonnie Watson, CPA, Accountant

Carmen Jeschke, CPA, Senior Accountant

Emily Bartling, Accountant

Emily Upstrom, Accountant

Chantel Schmitz, Seasonal Tax Administrator

Chris Roche, Senior Accountant

Chris Flessert, CEBS, SPHR, HR Specialist

Carole Ruiz de Chavez, CPA, Seasonal Tax Accountant

Gail Gordon, CPA, Seasonal Tax Consultant

Jared Krueger, CPA
Jessica Primrose, Administrative Assistant

Shelly Bartelt, Seasonal Tax Accountant

Tracy Gast, CPA, Senior Accountant
Trevor Brand, CPA, Accountant


Our Sauk Prairie Team

Julie Miller, CPA Partner

Allan Schmid, CPA

Jenny Pickhard, Accountant & Payroll Specialist

Julie Brickl, Accountant

 Katie Tiesing, Administrative Assistant & Bookkeeper


Staff on the Move

Erin Long, Payroll Specialist

Kelly Kutler, Payroll Consultant


Brookfield, WI  

Phone: 414-751-6847

Fax: 866-486-4261


Sauk Prairie, WI  

Phone: 608-644-0206

Fax: 608-643-3467

Middleton, WI 

Phone: 608-824-3002

Fax: 866-486-4261