Our Vision Is Your Success

We believe in supporting families to grow and prosper through clear communication. Our goal is to share our wisdom every day and help develop a community of supportive, successful people. We want to engage you, excite you, and guide you towards a better future. When our clients thrive, we thrive. 

A Wealth of Experience

Rees Group is one of Melbourne’s most experienced advisory & accounting firms. We have over 70 years of experience in taxation and business advice. Since first opening our doors in 1950, we’ve helped thousands of clients grow, expand and transform their businesses.

In those 70 years, the world around us has drastically transformed. Economic reforms, recessions, technological disruption – the financial playing field is always changing. Over the years, we’ve watched Melbourne grow from a sleepy backwater into a truly international city. And we’ve watched many of our clients grow with it.

Every step of the way, we’ve been there to guide them with a steady, experienced hand. We’re more than just taxation advisors. We help businesses identify growth opportunities and develop competitive advantages.

We specialise in helping businesses create succession plans and manage intergenerational wealth transfers. Now, many of our second and third-generation clients have been with us for decades. Our clients stick with us because we know about the history of their business. We believe in their goals and we understand their circumstances.

For the last 22 years, Rees Group has been led by Justin Mastores. Justin started as an accountant at Rees in 1993 before becoming a Partner in 1999. He’s been a Managing Partner since 2002. Justin brings outstanding advisory experience. Over his career, he has sat on the board of directors for several companies and organisations.

Justin’s friendly, hands-on approach embodies Rees Group’s dedication to their client’s success. He’s genuinely passionate about helping others succeed. Over the past two decades, Justin has helped guide Rees in exciting and progressive new directions.  Rees Group is now able to add a high level of experience to transactions of up to $30 million. We offer extensive advisory experience around sales and acquisitions, including:

  • Sales & mergers of businesses of both local and international companies
  • Negotiation of the terms & facilitation of the legal agreements
  • Financial due diligence

Accountants Who Care.


We know the financial side of running a business can be daunting. It doesn’t have to be that way. We focus on taking the stress out of compliance and providing a friendly, relaxed environment. We’ll make sure that our advisory process is engaging and exciting. Our accountants will get passionate about your goals as we plan together for growth. 


We’re committed to your success. Our advisors will liaise with all levels of your business. We can integrate seamlessly with your team to help drive and improve your profit margins. If you decide to work with Rees, you can rest easy. We’ve always got your back when it comes to tax obligations and corporate compliance.


Our clients are the most important part of what we do. We’ve worked with businesses of all shapes and sizes. No matter who you are, we will always treat you with the utmost respect. We take a holistic approach to financial advisory. 


We do everything with integrity. Our advisors have decades of combined experience across all areas of tax and business advisory, and they’re passionate about helping you get your business right. When you work with Rees, you can trust that your obligations will always be covered. We’re compliance experts.

Our Tribe

Here, we look past the numbers. We look to the families and teams making it happen, and we take the time to understand them. We’re serious when we say that we care about our clients. In many cases, our professional relationships have gone on to become real, lasting friendships.

The Latest From Our Blog

tax return

How are you planning to spend your tax return?

The average Australian tax return is set to rise this year to around $2600, driven by things like the extended Lower Middle Income Tax Offset, and a sustained working-from-home environment that’s expected to increase the

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We help businesses identify growth opportunities and develop competitive advantages.