Firm Members
STEPHEN TONKIN
BA (Accounting) Chartered Tax Advisor FCPA
Stephen is the principal of the firm and has over 40 years experience in taxation and 30 years in public practice. He specialises in Business Advising and Taxation. He has a long term involvement in community affairs and currently holds several board positions on Not For Profit Organisations involving vocational training, Disability Employment Services and job placement.


KIMANI NGANGA
B Commerce (Accounting) CPA SSAud
DIP Financial Planning
Kimani was a partner in a Nairobi based CPA (Kenya) practice prior to migrating to Australia in 2004. His audit career working for PKF, PWC, KGA and various international donor aid agencies enhances the practice’s core competency in the provision of Audit Services to charities, religious & not for profit entities, vocational institutions, schools, SMSFs and the real estate industry, etc.
Kimani holds a CPA Australia Public Practice Certificate, is a Registered Tax Agent, an ASIC registered SMSF Auditor and also holds a limited Australia Financial Services Licence for the provision of strategic and compliance advice services to the self-managed superannuation funds industry.
ANANCHAI (ACE)
NGAMPHATTARAWORKAKUN
B Business (Marketing) CPA SMSF Auditor
Master of Business (Accountancy)
Ace qualified as a Bachelor of Business (Marketing) in his early life as a student in Thailand. Arriving in Australia in 2006, he obtained his accounting qualification in 2009 through the University Of South Australia.
As well as a taxation consultant and advisor to Small Businesses and Software Support Specialist, Ace is a Self Managed Superannuation Funds Auditor, holds a Public Practice Certificate as a CPA and is a Registered Tax Agent.


JACK YANG
Master of Professional Accounting GRAD Diploma (Management)
Bachelor of Finance Bachelor of Accounting
Jack graduated in China as a Bachelor of Finance, Bachelor of Accounting and completed his Masters Degree in Professional Accounting at the University of Adelaide in 2013 and a Graduate Diploma of management in 2014. He is currently working towards his CPA Qualification and has extensive knowledge and skills in Business Software Applications which he applies in training and support services to our clients.
Jack provides direct and online support to clients in the fields of Accounting Taxation, Bookkeeping and Business Compliance.
DANIELLE (DANNI) MATHIE
Advanced Diploma in Accounting
Certificate IV in bookkeeping
Danni began working with Tonkin Accounting in 2016 and is currently employed part time as a trainee Accountant. She provides valuable support work in information analysis and calculations in the areas of GST and Taxation and in the preparation of financial reports.
She currently holds a Certificate IV in Bookkeeping and an Advanced Diploma in Accounting, Membership of the Association of Accounting Technicians and currently holds a Commonwealth Scholarship pursuing a Degree in Accounting.
Danni has a strong interest in the Disability Sector and is currently developing plan management services systems to assist participants and clients of the National Disability Insurance Agency as part of her role in the practice.


VIVIENNE TONKIN
Viv has been working in administration in the practice since 2002.
Her responsibilities include reception, office administration and client support in a job share capacity.
BARBARA CASTLEDINE
Barb joined the firm in 2006 after extensive experience in running a small business and in administration roles.
She job shares in reception, office administration and client support


SAMUEL TONKIN
Our most recently appointed staff member who provides great back up to our administration staff.
Sam maintains file recordsfor all client digital reports and documents emanating from the ATO and other sources and is responsible for general file management and correspondence.