Small Business Accounting, Bookkeeping, Payroll & HST
Professional Accounting, Bookkeeping, Payroll & HST Services in Canada
Diamond CPA provides full-cycle accounting, bookkeeping, payroll, and HST services designed to keep your business organized, CRA-compliant, and financially healthy. Whether you’re a sole proprietor or an incorporated small business, our CPA-led support helps you understand your numbers, improve cash flow, and avoid tax surprises.
Our goal is simple:
Accurate books, painless payroll, compliant HST filings, and better financial decisions.
Our Core Small Business Services

Bookkeeping & Accounting
- Monthly/quarterly bookkeeping
- Bank & credit card reconciliations
- Revenue & expense categorization
- Shareholder & inter-company loan tracking

Financial Statements & Year-End Support
- Income Statement (Profit & Loss)
- Balance Sheet
- Trial balance & schedules
- Year-end adjustments & cleanup
- Compilation reports

Payroll Processing & T4 Filing
- Payroll setup & management
- CPP/EI/tax calculations & remittances
- Pay stubs & payroll reports
- T4 & T4 summary filing

HST/GST Registration & Filing
- Registration support & quick-method election
- Input tax tracking
- Monthly, quarterly, or annual filings
- Reconciliations & CRA compliance

Business Registration, Planning & Projections
- Corporation & Sole-Proprietor Registrations (Federal & Ontario)
- Business Structure Planning & Tax-Efficient Setup
- Financial Forecasting, Cash-Flow, & Profit Projections
