Waterloo · Monroe County · checked Oct 21, 2026
CPAs in Waterloo, Illinois
19 current IDFPR licenses with an address of record in Waterloo: 16 licensed CPAs and 3 CPA firms, plus 5 registered CPAs (registered, not licensed) listed separately. Featured (labeled) and claimed listings first, then A–Z.
- Licensed CPAs
- 16
- CPA firms
- 3
- Registered, not licensed
- 5
- Checked
- Oct 21, 2026
Registered CPAs in Waterloo
5 listings
Registered CPA · WaterlooKeith Gerard BrinkmannReg. #239023508Since 2010Registered, not licensed · checked Oct 21, 2026Registered CPA · WaterlooRussell R FrinkReg. #239025050Since 2010Registered, not licensed · checked Oct 21, 2026Registered CPA · WaterlooRussell E GregsonReg. #239023514Since 2010Registered, not licensed · checked Oct 21, 2026Registered CPA · WaterlooJeffrey M NewboldReg. #239021845Since 2009Registered, not licensed · checked Oct 21, 2026Registered CPA · WaterlooDiann M WensingReg. #239008233Since 2006Registered, not licensed · checked Oct 21, 2026
Registered CPAs hold the Illinois CPA certificate and a current IDFPR registration but not a license; under the Illinois Public Accounting Act they may not sign audit reports. Licensed vs registered. Listings show current IDFPR records only. Records for Waterloo that are not current: 10 inactive, 10 not renewed. Search them in Check a CPA. Discipline shown on listings comes from the same IDFPR data.