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About Us

professional accountant Collingwood, Collingwood accounting firm, accounting services Collingwood, CPA Collingwood, Chartered Accountant Collingwood
Collingwood accounting services
249 Ste. Marie Street (one street over from Historic Downtown Collingwood)

Chartered Professional Accounting Services

Like many seeking to escape the hustle of Toronto, we were drawn to Collingwood over 18 years ago by the wonder of Nottawasaga Bay, the proximity to the Blue Mountains ski resort and the small town feel of the Historic Downtown.  Collingwood is a vibrant community rich with business opportunities that enjoys continued growth as more and more people settle in the area.  To ensure maximum success for our accounting firm we purchased a property one street over from the downtown core.  It is here that C.E. McMahon Professional Corporation has expanded our Personal Tax Planning and Corporate Tax Services and grown substantially in staff and achievements.  We are eager to invite clients from Collingwood and surrounding areas to use our personalized services.

Couples or individuals looking to retire in Collingwood will benefit from our expertise, care and our ability to make the transition seamless and worry free.  We provide Estate Planning and we offer advice with RRSP and TFSA usages and contributions.

Local businesses that require help with Bookkeeping, HST Remittance, Payroll and Annual Tax Filing will find us a one-stop shop.  We are here to make your business successful.  Whether you are Incorporated, a Partnership or Self-Employed, we understand your business needs and we know how to minimize your financial liability with Revenue Canada.

Individuals looking to file their annual tax returns will find us equally helpful.  Avoid the hassle and anxiety associated with completing tax forms.  Our Personal Tax Services will make the process easy.

Supporting Our Community

founder's club Collingwood Colts

C.E. McMahon Professional Corporation is one of the Founding Members of the Collingwood Colts and we helped bring Junior A Hockey back to Collingwood.

Collingwood CPA, corporate accountant, chartered accountant, tax advice, income tax filing


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