Our Firm


Our Focus

To deliver a personalized approach with practical advice to give you peace of mind.

Our Location

Our firm is located along the Barrie waterfront at 11 Victoria Street. We provide service to clients located in Barrie & the surrounding Central Ontario region as well as those down the Hwy 400 corridor to Toronto.

Our People

Collectively, our staff has over a century's worth of experience in public practice. As a firm, we bring that breadth of knowledge and wisdom to our clients each and every day.

Our Clients

We work with entrepreneurial individuals and corporations that represent a diverse cross-section of industries.

Visit our Portfolio page to get a flavour of the industries that our client base works in.


Client Testimonials
  • " We have the highest regard for the professionalism of Mike and the entire team at Michael Kostrich CPA Professional Corporation. Over the past 10 years they have provided both personal and busines... "

    Lawrence & Kimberly Crook - Glow Day Spa Inc | Slide’em Inc | Muskoka Spa Resorts Holdings Co.Corp

  • " We were referred to Mike by a well-known corporate law firm in Barrie and are extremely appreciative for that referral. From the very start, we have been provided with outstanding accounting and bo... "

    Deb Curtis - President - Cranston's Ontario Inc.

  • " Having a Chartered Professional Accountant like Michael on my side means I can concentrate on growing my business. His firm have been preparing my personal as well as my business taxes for a number o... "

    Ramin Kouladji - Alliance M&A Advisors

  • " We have been clients of Mike’s firm for many years. He and his team have worked with us on annual corporate & personal tax filings, retirement & estate planning, and issues surrounding real estate di... "

    Eileen & Allan Wilson