Our Team

Maggie Ashton

President and Founder

Senior Member of CBA
Simply Accounting Consultant
Quickbooks Pro Advisor


Maggie Ashton is fluent in English and French. She is a tax and accounting professional, whose accounting and taxation expertise has been developed since 1987, providing service to clients in Canada and abroad.

Since establishing Ashton Tax in 1987 (originally Ashton & Associates), Maggie has offered personalized consultations, as well as comprehensive taxation & accounting services to clients. Maggie delivers consultations to small businesses and self-employed individuals on the essential steps required to establish effective bookkeeping and tax planning procedures that suit their needs.

Corinne Rivard, Dip. Admin.

Office Manager


Corinne Rivard is fluent in English and French. Corinne joined Ashton Tax as the Office Manager in 2009. As Office Manager her responsibilities include office and file administration. She also works on accounting and income tax files for our clients, in the for-profit as well as the not-for-profit sector.

She graduated from Herzing Institute with a Business Administration diploma in 2002.

Monique Arboite, B.Mgmt.Acct., MPM

Manager of Bookkeeping


Monique Arboite is fluent in French and English. Monique has worked with Ashton Tax since 2001. She handles the preparation of all financial reports as well as calculating Harmonized Services Tax (GST/HST) owed to secure full compliance and payment. She teams up with the internal and external auditor in ensuring appropriate and accuracy of these financial records.

She graduated from HEC (Hautes Études Commerciales) Bachelor of Management Accounting (CMA profile) Master degree in Project Management.

Marcos De Diego

Tax Specialist


Marcos De Diego is fluent in English, French and Spanish. He has worked with Ashton Tax since 2003. He initially worked for three years as Office Assistant/Coordinator, and currently works for Ashton Tax on accounting and income tax files for our clients as an independent contractor.

Monica Havelock, B.Sc., Dip. Photonics Technology

Tax Specialist


Monica Havelock is fluent in English. She has worked with Ashton Tax since 2012, and she currently works on accounting and income tax files for our clients as an independent contractor.

Monica earned a B. Sc. at University of Winnipeg and an Electronics diploma at Algonquin College in Ottawa 1983. She worked in high technology at Nortel. She returned to Algonquin College to obtain a Photonics Technology certificate 2004 and then teach Photonics and assisting research for Green Technology projects, while earning a bookkeeping certificate. Since 2009 she has studied and worked as a tax preparer.

Doreen Doré, CFP, FICB, FMA

Tax Specialist


Doreen Doré is fluent in English. She has worked with Ashton Tax since 2014 and prepares income tax returns for our clients as an independent contractor.

Doreen retired from Bank of Montreal in 2004 after 38 years in positions of Branch Manager, Financial Services Manager and Relationship Manager, to name a few. She then worked with a financial planning firm until joining our team.

Doreen earned a Fellowship in the Institute of Canadian Bankers in 1985, Certified Financial Planner in 2002 and Financial Management Advisor in 2006. Her studies are ongoing to update and enhance her knowledge

Patricia Cocker, B.A., CFP®, CPCA®, CEA

Tax Specialist


Patricia Cocker is fluent in English. She has worked with Ashton Tax as an independent contractor since 2009, specializing in final and estate tax returns for our clients.

Patricia completed her CERTIFIED FINANCIAL PLANNING designation in December 1999, her CERTIFIED PROFESSIONAL CONSULTANT ON AGING in 2010 and has recently completed her CERTIFIED EXECUTOR ADVISOR designation. She has completed a number of accounting courses as well as many advanced tax courses.
In addition to her work in the area of tax, Patricia also assists the recently bereaved with the paperwork that needs to be completed when a loved one passes away; she assists those who wish to put their financial affairs in order before sitting down with their lawyer to prepare their wills. She is also a qualified credit counsellor.

Prior to working in the financial services sector, Patricia spent 24 years working in the not-for-profit sector, first in public libraries and then with health and housing organizations.

Chun Liu

Tax Specialist


Chun Liu is fluent in English and Mandarin. She joined Ashton Tax as tax specialist in 2016 and currently works on income tax file and bookkeeping for our clients.

Chun worked at H&R Block as an advanced tax professional prior to joining our team. She received a diploma with honors in Business Accounting from Algonquin College in 2013. She is continuing to study and enhance her accounting and tax knowledge.