About us

Gabriele Guderjahn (CPA), President

We are a Chartered Professional Accounting firm based in the Niagara region. We are focused on local business, not for profit organizations, and municipal and regional governments. Our goal is to meet your accounting needs, while increasing the profitability of your business through management consulting. Our president Gabriele Guderjahn is a Chartered Professional Accountant in Ontario and has a Masters of Accountancy and Bachelors of Accounting from Brock University, and a Masters of Business Administration from Athabasca University.

Our Founder is a Chartered Professional Accountant in Ontario and holds a doctorate in law from Osgoode Hall Law School, a Masters of Business from Osgoode Hall Law School, and a Masters of Business Administration from Athabasca University.

Based in St Catharine’s Ontario we provide a full range of county and tax services throughout the Niagra region and Golden Horseshoe area. Our team helps you identify the most profitable areas for your business to grow and develop. We offer competitive rates and provide each customer with personal attention. We also provide international accounting and tax services for Canadian companies operating in Germany, and German companies operating in Canada, through our bilingual accountants.

Our team is actively involved providing community services to local sport teams, volunteering for different fundraising activities and serving as a treasurer for a family based fundraising group for a local school. We are also integrated within the local business community and we are members of the Niagara Chamber of Commerce. Our mission may be simply expressed as using our expertise and experience in accounting, taxation and management consulting to contribute to our the success of our clients, and meeting or exceeding their expectations. Our core values include competence, trust, integrity, honesty, commitment and caring.

We have extensive experience in a broad range of sectors, including:

  • Retail
  • Manufacturing
  • Power & Energy
  • Infrastructure
  • Environmental Organizations
  • Transportation
  • Nonprofit Associations


  • Institutions
  • Land Development
  • Tourism
  • Construction
  • Municipalities & Regional
  • Government