Clarke Starke & Diegel LLP

Clarke Starke & Diegel LLP (CS&D) is a Chartered Professional Accountant firm based in Waterloo, Ontario, in the heart of the Kitchener-Waterloo region. The firm specializes in serving family and owner-managed businesses, not-for-profit organizations, and professional services firms, offering personalized strategies and integrated tax planning. Its core accounting services include professional-level bookkeeping and controllership to keep clients' financial records complete and accurate. As licensed public accountants, the firm performs financial statement audits, review engagements, and special report engagements for shareholders, lenders, donors, and government agencies. CS&D also provides trust and estate planning to help clients transfer wealth tax-effectively across generations, as well as year-end financial statement preparation and corporate and personal tax returns, integrated with broader tax planning. The firm emphasizes regulatory compliance, customized solutions, and stakeholder confidence, keeping current with changing tax laws and explaining complex accounting matters in plain language. CS&D is led by a team of partners holding CPA, CA, and LPA designations, supported by a substantial staff of accountants and professional support personnel. Client testimonials note long-standing relationships, with some clients working with the firm for well over a decade. The firm's office is located at 7 Union Street East in Waterloo and operates Monday through Friday.