John Fairlie



  • Is a member of the Financial Planning association of Australia.

John founded GDA when he acquired Geoff Doolan & Associates in 2000 and has overseen the development of the group to that which exists today. He has been in the financial services industry since 1987 working with both large institutions and small boutiques and has almost 40 year’s experience in business management.

John Di Monda

BCom, CPA, ATI, DipFS (FP)

Director & Chief Executive Officer

Commercial Investment Property Specialist

  • Is a member of CPA Australia and The Tax Institute.

John joined GDA in 2011 and is the Chief Executive Officer of the GDA Group. His background includes banking, public practice and commercial accounting, tax, funds management and regulatory compliance. He is a qualified accountant and commercial property investment expert.

Michael Driessen


Director – Financial Planning 

Senior Financial Planner

  • Is a member of the Financial Planning Association of Australia.

Michael joined GDA in 2007 and provides holistic and individualised financial advice to professionals, self-funded retirees and small business owners. He is a key member of our Hobart financial planning team and also provides financial advice in Melbourne. He has a broad range of skills for delivering advice that is tailored to your needs and focused on your best interests. It is this strategic approach combined with a knowledge of investments, superannuation, retirement strategies, debt management, family wealth protection and self-managed superannuation funds that make him a trusted adviser.

Geoff Harper

CPA, BBus (Acctg)

Director – Accounting & Advisory

Business Adviser and Personal Tax Accountant

  • Is a member of CPA Australia.

Geoff joined GDA in 2013 and is a very experienced accountant having provided strategic advice and traditional accounting and taxation services to assist individuals and businesses achieve their goals for over 43 years. Geoff is a key member of our business advice team and personal taxation team. He has also provided a wide range of services to a large number of not-for-profit organisations and statutory bodies. He is a CPA Australia member holding a Public Practice Certificate, a registered tax agent and a licenced company auditor.

Malcolm Penglase

AFP®, BBus

Director – GDA Securities Ltd

Senior Financial Planner

  • Is a member of the Financial Planning Association of Australia.

Malcolm believes that no matter how complex or simple your financial planning requirements, clear and concise advice can provide you with greater confidence setting and achieving your goals.  With over 15 years providing personalised financial planning advice, Malcolm understands the importance of the ongoing relationship with a trusted adviser.  With a broad financial planning background, Malcolm provides advice to people just starting their financial process, through to wealth accumulators and specialises in pre and post retirement strategies.

Helen Cowhan


Chief Financial Officer

Business Adviser and Personal Tax Accountant

  • Is a member of CPA Australia.

Helen is an experienced business and taxation accountant holding a Public Practice Certificate and is a Registered Tax Agent. Helen has enjoyed over 20 years’ experience supporting both individuals and businesses in meeting their personal and business reporting requirements and, more importantly, providing strategic advice, relevant reporting and information to assist her clients to reach their goals, understand their business position and make better business decisions, regardless of the stage of business they are in.

Warren Burt


Senior Financial Planner

  • Is a member of the Financial Planning Association of Australia and CPA Australia.

Warren has practiced as a financial planner since 1991 and worked in the finance industry since 1982. He utilises his extensive experience and financial knowledge to help smart people make intelligent decisions about their money, so they can achieve and do the things that are important to them.  He provides strategic personal financial advice to employees, professionals or business owners who are seeking to accumulate wealth, to protect their wealth and enjoy their retirement.