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Corporate Tax Services

corporate tax services, accounting services, bookkeeping, corporate accounting, business accounting, chartered accounting, depreciation fixed assets
tax services, corporate tax services, small business accounting, Economic Loss Claim, business valuation


New businesses will find C.E. McMahon Professional Corporation especially helpful in that we offer many value-added Corporate Tax Services including Year End Compilation, Corporate Tax Returns / E-file, Bookkeeping, HST Remittance, Payroll, Workers Compensation and Shareholder Accouting.  Starting and maintaining a business is not without stress and anyone that ventures into forming a corporation knows how you are challenged for time.  Our goal is to give you back your evenings, weekends and holidays by becoming an extension of your business.  Our staff are keenly aware of the nuissances of Corporate Accounting and many have worked for businesses just like yours.

Collingwood accountant, CPA, Chartered Accountant, corporate tax services, small business accountant, business financial statement, audits, review engagements, prepare financial statements


We will prepare your unaudited financial statements, corporate tax returns, GST/HST returns, T4 slip and summaries for employees, T5 slip and summaries for dividends and ROEs for employees.  We work well with small and mid-size businesses by offering tax planning and ensuring your payment obligations to CRA are fully met.  We can help you avoid year-end cash flow problems resulting from paying too much tax at one point in time.  And if your corporation has not filed in several years, we can help with that. too.


To accurately satisfy the requirements of the CRA when filing corporation tax we will require the following documentation:

  • Articles of Incorporation
  • Bank Statements
  • Investment Statements
  • Share Certificates
  • Minute Book
  • Receivables
  • Payables
  • Inventory (complete and verifiable)
  • Purchase and Sale Agreements
  • Legal Invoices
  • Bad Debts
outsource CFO, outsource controller


As a part-time CFO our staff bring the highest level of expertise to your company. We can provide a variety of functions to ensure your accounting system is running efficiently and accurately for the critical month end reports and year end tax file.

Chartered Professional Accountant Collingwood, corporate accountant, corporation taxes, corporate tax filing, corporate tax returns, corporate bookkeeping


Our office is fully operational, however closed to client access at this time in order to keep our staff, families and clients safe.

We are happy to speak to you on the phone or via email correspondence. You can also visit the link below for important and up to date Covid-19 information for personal and business purposes.

We can accept your business or personal documents via the convenient and secure portal on our website. If you prefer to drop off your paperwork, you can through the mail slot at our office.

All documents can be signed securely via our electronic signature software and are accepted via e-file to Revenue Canada.

We are here to assist you, please contact us if you need.

Thank you and stay healthy and safe.

C. Elaine McMahon, CPA, CGA
Chartered Professional Accountant