Business Accounting Services

We take the accounting burden off of your team so that you can focus on what’s going on right there, in the trenches, with your customers. We offer all business accounting services ranging from corporate tax preparation and planning, audits, corporate reorganizations, bookkeeping software implementation & consultation, and more. Read More


About Us

Rosemarie K. Fleischer Professional Corporation is a service oriented Chartered Professional Accounting firm located in Oakville Ontario servicing small to medium sized entrepreneurs, business associates and organizations located in the Golden Horseshoe and GTA.  Read More

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Your Oakville Accounting Firm

In 2007, Rosemarie K. Fleischer started her accounting practice with the goal of offering it’s loyal and growing client base unparalleled professional, friendly and timely service. Fast forward to 2015 and Rosemarie Fleischer Professional Corporation has become one of the most trusted, reputable accounting firms of its kind.

We provide innovative, value-added services for owner-managed businesses. From completing the most basic personal tax return, to financial statement engagements, to complex tax reorganizations, our staff provides value to business owners and high net worth clientele.

Our attention to detail, accuracy and consistency makes our clients happy and the fast, friendly manner in which we do business is what keeps them coming back.  We are pleased to be Oakville’s premier Accounting firm.

Business Accounting Services

  • Corporate Tax Preparation & Planning
  • Accounting & Bookkeeping Services
  • Accounting and Assurance
  • Payroll & Excise Tax Reporting
  • Audits of Condominium Corporations
  • Corporate Reorganizations & Plans
  • Small Business Start-Up
  • Bookkeeping Software Implementation & Consultation
  • Corporate Finance
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Personal Accounting Services

  • Personal Tax Preparation & Planning
  • Estate Planning & Tax Preparation
  • Canada Revenue Agency Tax Disputes
  • Personal Cash Flow & Budgeting
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Let’s start with a simple conversion.




Rosemarie K. Fleischer Professional Corporation


Erik Roller Professional Corporation
as Partner,

Have merged with
Henderson Tax and Advisory Inc.


Henderson Fleischer Roller
Professional Corporation