A sample of our recent work is included in the case studies below, together with testimonials from some of our great clients.


The World’s Leading Forex Broker

"We decided to engage Koustas & Co as they were able to deliver fantastic work often in a climate of tight deadlines. All the Koustas team were across our business and…this gave me confidence knowing that I had an extremely high calibre team of people on my side…"

Owen Kerr, Co-Founder & CEO


Former Director and owner of ESG Group, a national brand architect company.

"Koustas & Co, and particularly Herc Koustas, has been almost synonymous with the history and development of the ESG Group, since the mid 90’s. He has been both central and effective in some of the most sensitive issues that often present themselves in business. It has been a pleasure to observe the successful establishment and development of Koustas & Co throughout our own journey and I look forward to many more years of their support."


An award winning unified communication and IT integrations company

"…we now have a deep relationship where board level style conversations are held monthly, to assist with the direction our business has taken. They have been very good for our business…"

Rob Dell, Managing Director


An innovative global medical device company specialising in minimally disruptive surgical products and optimising the surgical process for the spine.

"NuVasive could not have chosen a better accounting firm to partner with. As we post record results and represent the most successful subsidiary internationally for NuVasive Inc., it is with great pride that we consider Koustas & Co an indelible part of the NuVasive family."

Merv Kiley, Managing Director


An ideas and skills driven firm with a focus on delivering complex and high quality construction projects

"We have found Koustas & Co to be a reliable and extremely professional consultant. Herc and Damien have provided a clear and straightforward approach to restructuring our company. It is reassuring to know that a knowledgeable and capable external partner is assisting with this process."

Ben Pedersen, Director


Supplies high quality furniture and storage products to the residential and commercial markets throughout the Northern Territory

"I’m so glad we changed our accountants to Koustas & Co. Damien and his team are real pro’s; service with a smile and most importantly, Koustas is keen for our business and they are actually interested in what we do and have a genuine understanding of what we do."

Craig Morse, Managing Director


Helps businesses and organisations get their message across, from media training, through to video production.

"Damien & his team at Koustas & Co were outstanding in their advisory and execution roles…I commend Koustas & Co to anyone requiring a superior level of service and advice."

Jonathan Raymond, Managing Director


Specialise in providing dedicated Registered Nurses and professional carers committed to helping people stay in their own home and live independently.

"All the Koustas team were across our business and able to add real value. We were amazed at how easy everyone was to work with. It gave me great comfort as CEO to know they were able to look at the detail and be across all the high level analysis but still explain the solutions in ‘layman terms’. We have been extremely happy with the outputs from Koustas and their exceptional attention to customer service."

Nick McDonald, CEO


Australia’s foremost integrator of robotic automation, with over 28 years of experience and expertise in industrial robotics, manufacturing automation, process automation and factory automation.

"The team at Koustas & Co exhibit a very broad knowledge base from which I am confident that I will benefit from the right advice in any given situation. Koustas & Co form a key part of this support structure, keeping me well informed and enabling me to concentrate on my customers."

Doug Smith, Managing Director


Trewhealth is a national company focusing specifically on the corporate health sector and specialising in all aspects of corporate health solutions.

"Trewhealth staff have formed a fantastic relationship, both personal and professional with the team at Koustas & Co, so much so that we now employ their services on a regular basis to effectively help Trewhealth become a better business. They are the brains behind our braun and…one of their biggest assets is they are always outcome oriented…"

Tory Trewhitt, Director