“David, Amanda and the team are an integral part of our business. Everything we ask of them is answered promptly, helpfully and always with a smile. Their wonderful customer service is part of the reason we have been clients for so long. We feel at ease knowing that this important part of our business is being handled by such a professional and knowledgeable team.”

Alan & Alyson – Camp Counselors USA Pty Ltd


“David O’Brien and Associates is a valued and respected partner to Viking Cruises Australia and have been supporting our local business with local advice since we established our Australian office in 2008. I have personally also had the pleasure of working with the firm for years prior to Viking and it was therefore a natural choice for me to connect David O’Brien and Associates with Viking. Their prompt support, professionalism and genuine care for our business are capstones in our relationship and I particularly appreciate their always forensic approach to each task.”

Teresia Fors – Viking River Cruises


“David O’Brien and Associates has been our Accountant now for 25 years.  During this time David has been a great support professionally and a friend on our journey to success in business, from a small business then to become part of ASX listed company in 2006.  We continue working with David and his team advising and supporting us going forward.”

Dale & Bernadette McNamara – The Albion Hotel & The Horse and Jockey Hotel


“David O’Brien has been our accountant for over 20 years. In this time we have run 3 small business’s. David’s expertise in small business and personal tax has been such a big advantage to running our business efficiently and tax effective. David is always only a phone call away to give his knowledgeable advice and thus my husband and I highly recommend David to friends, business colleagues and family.”

Robert and Jackie De Vivo – Gosford and District Tennis Association Incorporated


“We have been clients of David O’Brien’s for 20 years. It is great that we still get the same great personal service with David and his staff of many years. David’s knowledge of all accounting aspects is amazing. David has known ourselves and our business for so long that everything is just so effortless especially at tax time. Cannot thank them enough.”

Dawn & Neil Dawson – Aquatech Syphonics Pty Ltd


“Progressiva has worked with the David O’Brien and Associates since we founded eight years ago, and during this time, he and the team have provided invaluable advice, from business set-up and taxation, through to investments, overseas business activities, business growth and new business set-up. The team has remained steady and always provided great support and knowledge as we have navigated change and growth.”

Jo Balfour – Progressiva Pty Ltd


“David O’Brien has been our Accountant for several years. His firm is very efficient, helpful and friendly in handling all of our enquiries. David’s firm allows us peace of mind with all of our accountancy issues and allows us to focus our energy growing our business. The staff are always very helpful and a pleasure to work with.”

Tony and Michelle Podesta – Tony Podesta School of Tennis


“David O’Brien and Associates have been taking care of us for the past 20+ years.  David offers a personal approach and is always available to answer questions so that we can make informed decisions for both our business and personal affairs as life evolves.  David and his team are very professional and knowledgeable and always seem happy to help us.  Even though the business moved from Sydney to the Central Coast, he has continued to visit us for business meetings whenever we need him to.  Thank you David!”

John Dickinson and Tania Bessant – JTAN Pty Ltd T/A Debtx