Thomson Reuters Tax System User Group

The Minnesota Property Tax System User Group currently has 17 counties using the Thomson Reuters property tax system called Aumentum. There are several subcommittees committed to various projects, such as the Legislative Research Committee, the Training Committee, and the Enhancements & Reports Committee. The MnCCC Tax User Group works closely with the Minnesota Department of Revenue on all of our projects.

List of Officers, etc.

Past Chair: Tiffany Ahearn, Blue Earth County
Chair: Jody Wagner, Rice County
Vice Chairr: Joyce Larson, Washington County
Recording Officer: Kathy Jensen, Roseau County

Representatives serve staggered two-year terms.
At-Large Representative I (up for election in 2020): Joe Heying, Morrison County
At-Large Representative II (up for election in 2021): Angie Larson, Isanti County
Northern Counties Representative (up for election in 2020): Sam Melbye, Polk County
Southern County Representative (up for election in 2021): Mike Stalberger, Blue Earth County

ISSG Co-Liaisons: Tiffany Ahearn, Blue Earth County and Mike Nelson, Chisago County

MnCCC Board Liaison: Jill Gontarek, Ramsey County

Committee Chairs:
Legislative Research Committee Chair: Dennis Freed, Chisago County
Training Committee Chair: Kathy Jenson, Roseau County
Testing, Documentation, Standards, & Reports Committee Chair: Steve Holthaus, Stearns County
Enhancements Committee Chair: Joyce Larson, Washington County
eGov (CollectMax) Committee Chair: Jackie Anderson, Stearns County

Rules & Regulations

Download the Thomson Reuters Tax System User Groups Rules & Regulations pdf

Meeting Schedule

Tax Advisory meets the first Thursday each month.  Full user group business meetings are held at the MnCCC Conference in June and periodically throughout the year as needed.


  • Legislative Research Committee
  • Enhancements Committee
  • Beta Test Committee
  • Reports Committee
  • Training Committee

Links to Forms and Files

Contract Vendor(s)

The contract vendor(s) for this user group that provide maintenance, support, development, and training services.

Thomson Reuters