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


  • Monthly/quarterly bookkeeping
  • Bank & credit card reconciliations
  • Revenue & expense categorization
  • Shareholder & inter-company loan tracking
  • Income Statement (Profit & Loss)
  • Balance Sheet
  • Trial balance & schedules
  • Year-end adjustments & cleanup
  • Compilation reports
  • Payroll setup & management
  • CPP/EI/tax calculations & remittances
  • Pay stubs & payroll reports
  • T4 & T4 summary filing
  • Registration support & quick-method election
  • Input tax tracking
  • Monthly, quarterly, or annual filings
  • Reconciliations & CRA compliance
  • Corporation & Sole-Proprietor Registrations (Federal & Ontario)
  • Business Structure Planning & Tax-Efficient Setup
  • Financial Forecasting, Cash-Flow, & Profit Projections

Get Your Accounting in Order

Book a confidential consultation with a senior accountant today to discuss bookkeeping, payroll, and HST solutions tailored to your small business needs.