Wayne Griffiths

Wayne Griffiths, Principal


A D Barnett & Co Pty Ltd was created in July 1997. The Principal of the business is:
Wayne Griffiths, M Comm, B Bus, CPA

Wayne is the Managing Director of the firm with a total of 38 years of senior commercial accounting experience in many industries. 25 years of this has been as a financial controller and commercial manager. He specialises particularly in working with clients in the areas of financial control, and performance improvement.


  • Accounting for various companies, trusts, partnerships, superannuation funds and sole traders
  • Preparation of financial statements
  • Preparation of income tax returns
  • Review of internal control
  • Write branch and head office procedures new products
  • International Reporting


  • Valuation of private companies and businesses
  • Due Diligence
  • Establishment of Accounting Systems, procedures and reporting for Overseas entities in Australia.
  • Preparation of Budgets and Forecasts
  • Preparation of profitability studies for bank
  • Evaluation of business systems
  • Acquisitions and mergers
  • Profitability Improvement for various clients
  • Strategic Planning and Management
  • Company Re-engineering
  • Estate Planning


  • Quantification of damages in prolongation claim
  • Financial investigations
  • Evaluation and negotiation of costs in relation to banks and international currency loans
  • Valuation of business for family law proceedings
  • Business interruption loss quantification


  • Foreign Exchange dealings
  • Money Market transactions
  • Establish procedures for Austraclear settlement system
  • Costing
  • Preparation and analysis of cash flows
  • Various computer systems analysis and implementation
  • International company consolidations and stock exchange reporting
  • Bachelor of Business completed at UTS (Sydney) in 1993
  • Master of Commerce completed at UWS (Nepean) in 1998
  • Certified Practising Accountant
  • Member of National Tax and Accountants Association
  • Member of RAN-ONE (Worldwide Accounting group)
  • Accredited RAN-ONE Consultant
  • Member of the Parramatta Accountants Discussion Group
Simon Tanti

Simon Tanti

Senior Accountant

Simon began his employment with A D Barnett Pty Ltd in May 2002, shortly after completing his Bachelor of Business (Accounting) degree at the University of Western Sydney. Since then, he has had 16 years experience with the company, whilst having successfully completed his CPA. Simon’s 16 years of experience covers all forms of business structures. Simon specialises in small business and rental properties particularly working with clients in improving their work life balance by streamlining their bookkeeping.


  • Accounting for various companies, trusts, partnerships, and sole traders
  • Preparation of financial statements
  • Preparation of income tax returns
  • Rental Properties and negative gearing
  • Review of internal control


  • Business Valuation
  • Preparation of Budgets and Forecasts
  • Strategic Tax Planning
  • Structure Review
  • Due Diligence
  • Profitability Improvement for various clients
  • Estate Planning
  • Cash flow preparation and analysis
  • Consolidation accounting


  • Xero
  • MYOB
  • Quickbooks
  • Excel
  • Handisoft


  • Bachelor Of Business (Accounting) completed at UWS in 2001
  • Certified Practicing Accountant completed in 2008
  • Xero Certified Advisor in 2018
  • Xero Payroll Adviser in 2018

Roslind Hanna

Office Manager

Why Choose Us?

At A D Barnett & Co Pty Ltd we understand that choosing an accountant (when there are literally thousands to choose from) can be a daunting task. Given that you are a busy person, we have created this page to make the process quicker and easier for you.

  • We are responsive. Your calls are returned within 24 hours.
  • You are encouraged to contact us regularly because we take an active and stay involved role in your business throughout the year, not just at tax return time.
  • You have total access to us, even outside business hours.
  • You will save time and money (and reduce stress!) because we are a one-stop shop for every one of your business needs.
  • You have no risk thanks to our rock solid guarantee.
  • Do the work again at our cost until you are satisfied.
  • You partner with an accountant who has expertise and knowledge.
  • You will always be treated with courtesy and respect by our friendly staff.
  • Your work is handled promptly.
  • You partner with an accountant who looks forward, not just backward.
  • You receive all the services offered by big accounting firms, without the big price tag.
  • Your information is safe and confidential.
  • You will not be charged for: phone calls under 10 minutes, normal faxes or normal photocopying.
  • You will never be billed for minor contact or basic office procedures related to your business.
  • Correspondence will be sent to you within 24 hours.
  • You will be invoiced monthly to assist your cashflow
  • You are encouraged to give us feedback.
  • You can trust us. You have a local accountant who is backed by the strength of a worldwide group.

Our History

A D Barnett & Co Pty Ltd was created in July 1997. The managing director of the business is Wayne Griffiths and he has 25 years of senior commercial accounting experience. He has worked in many industries as a financial controller and commercial manager, which means that he is especially skilled in working with clients to improve their business performance.

Our Track Record

At A D Barnett & Co Pty Ltd, you partner with an accountant who has a thorough knowledge of your industry. We do our job well and we have a track record to prove it. Many business owners around Canberra, Parramatta, the Hills District, Windsor and North West Sydney thrive as a result of partnering with A D Barnett & Co Pty Ltd. Please visit our testimonials page to see who we’ve helped and how we’ve helped them. We have worked with the following industries:

  • Health Professionals
  • Building & Construction
  • Manufacturing
  • Importing & Distribution
  • Wholesale
  • Retail
  • Business services in finance, IT, printing, advertising
  • Engineering Trades – plumbing, property maintenance, electricians, auto electricians
  • Giftware
  • Other – non-profit organisations & industry bodies

You will partner with an accountant who actually understands your situation. We know the highs and lows of business because we have been in various business enterprises ourselves. We have already walked the road, so we know where the potholes are. Regardless of the obstacles, you may face, we will be beside you every step of the way, offering you guidance and support.

Get a personal consultation

We will take care of your accounting and administrative services.