We Provide A Free Initial Consultation to Review your Taxes


Whether you are a sole proprietor or a small to medium sized business, Koroll & Company is here to help. 

We have 20+ years servicing Newmarket, ON and the surrounding areas, and look forward to servicing you next.  We have experience servicing a wide range of industries and sectors, rest assured you are in good hands at Koroll & Company. 

We grow our firm through satisfied clients referring us as a trusted accounting firm.

  • Free Initial Consultations
  • 20+ Years of Experience
  • Award Winning Firm
  • US Tax Specialists
  • Client-centric
  • Variety of Industries Served

Book A Free Consultation

Koroll Services

Tax Services

We've got you covered! Tax planning and preparation form a winning combination for our successful individual and business clients, and our experienced staff can develop tax-minimization strategies to optimize your after-tax position.

Accounting & Assurance

At Koroll & Company, our goal is to present a clear and accurate picture of your financial position, allowing you to make sound financial decisions. 

Business Advisory

Whether you're a new or established business, you'll have lots of important financial decisions to make. As professional business advisors we can help by listening to you and then offering our advice.