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Janie Quinn CPA

I am a CPA qualified accountant and currently employed as an Associate Director at Thorntons Business Advisors having originally joined Thorntons as a Manager in April 2004. Prior to that I travelled around Australia for 3 years. I was previously a partner of Simmonds Le-Fevre CPAs.

I consult to a large range of business types within the Small to Medium Enterprise Sector including but not limited to:
• retail trade
• wholesale trade
• farming
• manufacturing
• medical
• building & construction.

The main services I provide to business clients include, but are not limited to:
• analysis of Key Performance Indicators
• attendance at management meetings
• systems review
• cash flow and profit forecasting
• estate and succession planning
• strategic planning
• independent expert reporting
• business valuations.

As I spend a lot of time with my clients I get a full understanding of their business so I can offer them services that are tailored to their needs.

I prepare various forms of business valuations for clients of Thorntons Business Advisors, for a variety of purposes, as well business valuations and independent expert reports for various Government bodies for use in compensation and other matters.

I completed a Bachelor of Business degree at Curtin University in August 1988 and obtained my Certified Practising Accountant (CPA) qualification in October 1988.

I have over 28 years experience in providing business, accounting and taxation services to a vast range of business types and sizes.

My career started in June 1986 as an under-graduate with Mann Judd Chartered Accountants. After completing my degree I joined the firm Simmonds Le-Fevre of which I later became a partner.

To arrange a time to meet to see how I can help you e-mail me at or connect with me on LinkedIn at

Back to Our Team
Our Key Services
  • Accounting, Taxation
    and Other Compliance

    Our team of professionals will ensure your business complies with Australian tax, company and employment legislative requirements. Read more +

  • Specialist Tax

    Our experienced team is available to provide answers to a broad range of questions in all areas of tax. Read more +

  • Superannuation
    Estate & Succession

    We help our clients manage their future through providing practical advice and taking care of superannuation, estate and succession planning. Read more +

  • Business Valuations

    Valuations are vital when making strategic business decisions. Read more +

  • Business Planning
    & Structuring

    We offer full entity structuring advice and guidance and will assist you in finding the best way to structure both your business entities and personal holdings. Read more +

  • Business Development
    & Mentoring

    Our team are passionate about helping our clients achieve business growth through development and implementation of effective business growth strategies. Read more +

Client Testimonials

Thornton's have constantly provided service of the very highest level, are responsive to our needs and are progressive in their offerings without ever being pushy. Importantly, the people we need to speak to are always available when we need assistance or advice on a range of matters and deliver when they say will. They are one of our most trusted partners in business...

Daniel Colgan, Director, Colgan Industries Pty Ltd

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Our company has found Marie and the team at Thorntons to be extremely helpful in their approach to our business. They are always ready with a reply to our emails or phone calls. Nothing is too much trouble for Marie and the team, they go above and beyond to help us with our taxation. I would recommend them anytime.

Splitrock Farming Co., Kerry Robinson

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Thorntons has been our business and accounting advisors for more than a decade. Thorntons team of dedicated and experienced staff ensure all of our financial requirements are addressed in a professional and timely manner. No issue is ever too big or small and it has been a pleasure working with them as our family business has grown over the past thirteen years.

Keryn McKinnon, Business Manager, Duraseal

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On behalf of Aquatec I would like to say that getting Thornton’s to provide management reports and business consulting has been the best thing we ever did. Moving from a “standard” accounting practice that wasn’t really giving us any proper advice to Thornton’s helped us transform our business and gave us a crystal clear picture of our business health on a month to month basis. Overall a great company to work with, would highly recommend them.

Andy Baker, General Manager, Aquatec Equipment

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I work collaboratively with Troy, Marie and their team in the areas of estate planning, farm succession planning and related party property transactions. Troy and Marie’s attention to detail and professionalism are of the highest standard and they work hard to attain practical and viable business solutions for their clients. They are both clear communicators, accessible and a pleasure to work with.

Julie Murray, Solicitor, Yarramundi Law

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Over the 5 years that my company has been a client of Thornton's, I have been extremely happy with their level of expertise and service. All of my enquiries have been dealt with in a timely and friendly manner. I would have no hesitation in recommending their services.

Hamish Pryde, Director, GlobalSD Pty Ltd

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