About us.

Providing first-class accountancy services since 1991.

Since founding our practice in 1991, Rothsay Chartered Accountants (An In.Corp Group Company) has been committed to providing exceptional service to its clients. Our culture is built on developing enduring interpersonal relationships with our clients and we genuinely take pleasure and professional pride in supporting their success.


Experienced, dedicated, knowledgeable chartered accountants.

Our dedicated, experienced team of chartered accountants provides efficient, bespoke accountancy services to a diverse range of clients in Sydney, Perth and beyond. Our mission is to prioritise customer service and establish enduring relationships with our clients. We strive to ensure that every customer would be comfortable recommending our services to others.

Our experienced team has a depth of varied and broad industry expertise. This breadth of skills and background enables us to provide you with a responsive and high quality business advisory and compliance service that is always tailored to your specific accounting needs.

InCorp Global is a leading provider of corporate solutions and business advisory with an established APAC presence across 8 countries including Singapore, Australia, Hong Kong, India, Indonesia, Malaysia, the Philippines, and Vietnam.

We share our collective expertise to support and service clients across a diverse range and size of industries and specialisations, including:

A reliable, reputable accounting firm you can trust.

Rothsay Chartered Accountants is a full-service accounting firm, which has established a reputation based on reliability, efficiency and attention to detail. We are committed to helping you to achieve your business objectives. We take the stress out of managing finances and making financial decisions.

We have extensive experience as a team and we understand what it takes to remain agile and adaptable in the world of modern business. We work with our clients to solve problems, identify effective, tailored solutions, facilitate growth and development and support ambitions. We want to make a positive difference.

Rothsay Chartered Accountants was established in 1991. Our goal was to provide clients with exceptional services that offer more than conventional accounting. Our culture and ethos are based on developing relationships, which stand the test of time, understanding our clients’ needs and preferences and being there to support our customers.

We take great pride in the relationships we have with our clients and we believe that paying attention to our customers is what sets us apart. We take the time to get to know each client and we draw up and implement strategies that are targeted to the individual company or customer. Maintaining relationships is integral to our success.

The Rothsay Difference: Our core values.


The relationships we have with our clients define us as a firm and distinguish us from other accounting companies. We pride ourselves on establishing and maintaining strong working relationships, which enable us to understand our clients’ individual needs and provide personalised advice. We don’t deal in a one-size-fits-all approach to accounting.


Embracing innovation is at the heart of what we do. We look to innovate and adapt in all areas, including technology, structure and building social ties. We are proactive in identifying new strategies, looking for new techniques and trends and moving with the times to best support our clients. We keep up to date with the latest technology, tax laws and financial disclosures.


We are committed to providing a first-class service for all of our clients. We have an eye for detail, we keep in touch with our clients and we have a highly qualified, skilled, knowledgeable team on hand to provide expert advice in a timely manner. We structure the way we work to ensure that every client has access to professionals with the most suitable skill set to optimise results.


We have over 30 years of experience in working with clients across a diverse range of industries and understand what it takes to provide responsive, seamless, tailored accounting services. Our background and experience mean that we are well-versed in creating and implementing strategic plans, which actively promote better financial outcomes.

Meet the team.

Senior Manager
Assistant Manager
Assistant Manager
Assistant Manager
Practice Manager

What our clients say.


I’ve been with this top accounting firm in Sydney for over 20 years and their tax advice, professionalism, quality of work and accounting services are always outstanding. As owners of various businesses, Rothsay have always been part of our team of trusted advisors and consultants.

Greg Dwyer

I have appreciated the professional support and high quality advice I have received from Alex Petrakis and the team at Rothsay Chartered Accountants for more than a decade. Genuinely great, helpful folks who always go the extra mile. Can’t recommend them more highly.

Ken Mortlock

Have used Rothsay Chartered Accountants for a number of years. Always competent, very professional and a pleasure to work with. They have assisted in a number of areas especially in dealing with tax issues and the ATO – and I highly recommend their services.
“Our Company and family have been clients of Rothsay Chartered Accountants for over 25 years. We have always appreciated the professional and personal service provided by Frank Vrachas and his team. Their broad and up to date expertise as well as the accounting, financial and business advice we receive has been invaluable. We can confidently recommend Rothsay.”

Rick de Leeuw

Managing - Director - Astral Scientific

Sydney Office

Perth Office

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