About Us

Wieler & Wieler Chartered Professional Accountants Corp. is a full service professional accounting practice. We help with tax planning, estate planning, business advisory services, corporate reorganizations, family trust structures, business plans, financing presentations, employee referral service, tax audits and appeals, bookkeeping, and controllership by the hour.



Mabel Wieler, FCPA, FCGA


After owning her own businesses and working for an international company as a credit and tax manager and as a controller for a sportswear manufacturing company, Mabel Wieler recognized a need for small business accounting services and small business software services. She opened her practice in 1999 and in May of 2006 incorporated under the name of Mabel Wieler Certified General Accountant Professional Corporation. Her goal is to provide a full range of accounting services for small businesses that cannot afford full-time accountants but need professional advice in record-keeping, taxation and management to stay competitive. Mabel offers personalized and innovative service to her clients so that she can transfer knowledge into value for each client. Her wide range of experience has helped business owners attain success in corporate and personal tax planning, bank financing, budgeting, establishing good financial and accounting software controls, and maintaining a reliable and timely system of financial reporting. Mabel has also done tax and accounting presentations. She has been involved with several professional organizations including the CGA Public Practice Committee, Canadian Tax Foundation, Women Business Owners of Manitoba, and the Winnipeg Chamber of Commerce. 

Mabel was on the executive of the Women's Enterprise Centre of Manitoba, serving as Past Chair, Chair, and Treasurer. She is a charter member of a National Software Advisory Committee for Simply Accounting, and was a member of the Finance and Audit Committee for the Winnipeg Chamber of Commerce. She has served as the Chair of Finance for the Lieutenant-Governor's Youth Experience Program, as Treasurer for Winnipeg Harvest, and also has served for several years on the Board of Governors for CGA Manitoba.

She is a co-owner of 4W Business Solutions, an accounting software solution provider. 

In the 2011/2012 year, Mabel was granted the Fellowship (FCGA) Award. The FCGA designation is a CGA-Canada award which recognizes members who provide exemplary service to CGA Canada or Provincial/International Associations, the profession or the public, or achieve prominence through a variety of means.

Crystal Barenz, BSc, FCPA, FCGA

Crystal Barenz is a Certified General Accountant with a Bachelor of Science degree from the University of Manitoba. She is an accountant in public practice with Mabel Wieler Certified General Accountant Professional Corporation, and co-owner of 4W Business Solutions, an accounting software solution provider. Crystal is a Certified Consultant for Accpac, a Certified Consultant for Simply Accounting, a Certified Consultant for ePOS (a Point of Sale software), and a Certified Consultant for UniResman (a hotel management software). She has over six years experience in public practice, and eight years experience working in the accounting department for a cooperative with over 500 stores. Crystal serves on the Board of Governors for CGA Manitoba. She is a Certified Continuous Improvement Coordinator with certification from Parisella Vincelli Associates Inc. She was a member of Y-Neighbours. She has done many accounting presentations for different groups, and has volunteered on various committees for Women Business Owners of Manitoba