One Accounting

Welcome to One Accounting — Your Trusted CPA Firm Across CanadaOne Accounting is a CPA-led professional accounting firm founded in 2017, built to help small and medium-sized businesses across Canada manage their bookkeeping, tax, payroll, and financial operations — so business owners can focus fully on growing their business.We serve clients from six office locations across Canada: Toronto, Calgary, Mississauga, Hamilton, Burlington, and Oakville. In addition to in-person services, we provide fully remote accounting and tax filing services to clients across all Canadian provinces. Our team of Chartered Professional Accountants (CPAs) and Chartered Accountants (CAs) combines deep technical expertise with a genuine understanding of each client's business, delivering accurate, compliant, and reliable financial support tailored to your goals.Why Choose One Accounting? Comprehensive Services Under One Roof

From day-to-day bookkeeping to corporate tax filing, payroll processing, personal tax returns, internal audit, and new business incorporation — we handle everything your business needs financially, all in one place.

CPA-Led Expert Team

Every engagement is overseen by a Chartered Professional Accountant. Our team includes CPAs, CAs, tax specialists, payroll experts, and cloud accounting specialists, ensuring the highest standard of financial management for your business.

Fixed & Transparent Pricing

We agree on a fixed price upfront — monthly or quarterly — with no hidden fees, no cancellation charges, and no long-term obligations. Cancel anytime with 30 days' notice.

Cloud-Based & Paperless

We are fully cloud-based, using tools like QuickBooks Online, Dext, and ADP to give you real-time visibility into your finances from anywhere. No need to maintain physical copies of documents.

Fast Response Times

We guarantee a 3-hour response time for all client emails. You will always know the status of your work — no chasing, no waiting.