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About Us

BSA Partnership is a Chartered Accounting firm based
in Melbourne's central business district. The firm's partners,
David Barnes, Mark Brownell, Dylan Neilsen and Greg Ziegler, have had
extensive experience in servicing business across Australia.

The BSA team offers a range of services to help small & medium enterprises and taxpayers with all their financial needs.

Our clients vary from small and individual taxpayers to entities with multi-million dollar turnovers.

The wide range of expertise, combined with our dedicated hands on approach and our extensive network, guarantee we will provide the best possible service. We have the ‘know how’ to support our clients starting a business, growing the business and selling the business. The ability to communicate with and understand


our clients’ business and financial needs is our greatest attribute. It ensures we are in a position to provide accurate advice and information with confidence. We consider ourselves a key component of our clients’ financial and business structure.

Contact Us to find out how we can be
‘your’ business partner.

Our Network

Clients of BSA not only have access to our core services but
also our extensive network of independent service providers.

As part of our service to you, we will help you identify your requirements and refer you to our network. We do not accept
any commissions or rebates for our referrals. Any gain offered is passed onto you directly.

Community Involvement

At BSA Partnership we are commited to making a difference,
as we not only care about the well-being of our clients,
but also the community as a whole.

Our team have expanded their endeavours, donating not only money, but their time as fundraisers, participants and volunteers with community organisations and charities who provide people with practical help to relieve suffering and hardship. Some of our recent and ongoing commitments include the following:

  • Beau Vernon Foundation
  • Read Step Grow
  • Reach Out
  • Royal Children's Hospital Good Friday Appeal
  • Prostate Awareness Australia
  • Life Be In It Australia
  • Australian Red Cross
  • Victoria University
  • Movember
  • Jeans for Genes Day
  • MS Red Ride
  • Duchenne Muscular Dystrophy Foundation
  • Beyond Blue

Contact Us

Our Office Location Map.

Contact Details.


Level 15, 461 Bourke Street
Melbourne Victoria 3000

Phone. +61 3 9604 8400

Fax. +61 3 9604 8484



At BSA Partnership we have a wealth of knowledge to share, below
are resources and supplementary information for your reference.

Our Services

The partners and senior staff of BSA Partnership
have experience in various specialist areas, including:

Accounting And Tax

  • Business and Taxation Compliance
  • Business Consultancy
  • Compliance with Australian
     Non-Resident taxation matters
  • Asset Protection and Structuring
  • Management Accounting
  • Cash Flow and
     Financial Management
  • Bookkeeping Services
  • ASIC Compliance

Self Managed Superannuation

  • Administration and Establishment of
     Self Managed Superannuation Funds
  • Facilitation of Auditing of Self
     Managed Superannuation Funds
  • Preparation of Accounts, Members
     Statements and Taxation Returns
  • Assistance with lump sum payments
  • Assistance with the establishment and
     administration of pension payments
  • Superannuation guarantee obligation

Business Services

  • Business Succession Planning
  • Business and Family Law Valuations
  • Buying and Selling a Business
  • Due Diligence
  • Online Data Facility
  • Information System Reviews
    Advice and Implementation
  • Estate Planning

BSA Partnership is a Xero Certified advisor. Contact us to get more details on Xero and how Xero can work for you. Xero

Our Team

The Partners

Mark Brownell

Mark joined BSA after gaining big 4 accounting experience and became a Partner in 2008.

Mark specialises in Taxation Consulting, International Taxation, Transfer Pricing, Management Accounting Services and Budget and Cashflow Forecasting. Mark regularly attends board meetings in an advisory capacity for his clients.

Mark likes to keep fit and enjoys spending time with his young family. Mark is an avid Essendon Bombers supporter.

David Barnes

A founding Partner of BSA Partnership, David has over 30 years experience as a Chartered Accountant. David specialises in Taxation Consulting, Business Consulting, Asset Protection and Structuring, Family Law and Superannuation Fund Compliance.

David is an active member on the advisory committee of various clients. David has served as an honorary member of the Red Cross Victoria Board and Audit & Finance committee, and has also served as a member of the Faculty of Business & Law Course Advisory Board at Victoria University.

Greg Ziegler

Greg has been a Partner at BSA since 2004 after starting as a graduate accountant here in 1994. Greg specialises in Taxation & Business Consulting, Cloud Accounting, Due Diligence, International Dealings, IT and Management Information System Reviews, Advice and Implementation.

When not working, he enjoys spending time with his family, watching Collingwood and Melbourne Victory and staying active by being a weekend triathlon tragic. Greg also volunteers at his local soccer club as a team manager and is an avid supporter of female football in Australia and beyond.

Dylan Neilsen

Having started his career with a mid-tier firm in Melbourne, Dylan joined BSA in 2013 and was promoted to Partner in 2020.

He specialises in taxation consulting and strategy, asset protection, business structuring, management accounting services and business consulting. Dylan has held not-for-profit Board positions in the health promotion space.

His client base comprises high net worth family groups, professionals and a broad range of SME’s operating locally and internationally.

When not in the office, Dylan enjoys the great outdoors and spending time with his young family.

Our Senior Staff


Suet Mun Chan

Mun is a Certified Practicing Accountant in her 5th year with BSA. Mun specialises in Fringe Benefits Tax and taxation consulting for individuals and family groups.

She is an accredited Xero advisor, with particular expertise in complex conversions in Cloud accounting systems.

Outside of the office she loves to travel and has a passion for international cuisine.

Ross Duncan

Ross is a Chartered Accountant who started his BSA journey as a young graduate in 2007. 13 years later he has developed into a crucial member of David’s team. Ross specialises in various areas of tax consulting, tax planning and management accounting, applying a diligent and detailed approach to his clients’ tax requirements. In his spare time, he’s a passionate fan of Australian music and loves spending time with his family.

Monique Arbuckle

Monique’s dedication to the firm and our clients is clear, having been a part of the BSA family for 18 years. Beginning as a Co-Operative student from Victoria University, Monique now leads our Self-Managed Superannuation Fund team and specialises in Fund Compliance and administration, and has accumulated a depth of knowledge that is highly valued by our growing number of SMSF clients.

Monique is also one of the more passionate supporters of the Richmond Tigers you may ever encounter.

Our Staff


Catherine Liew

Catherine is a Graduate Accountant having joined as a Co-operative student from RMIT in 2018. She specialises in tax consulting for individuals and family groups. Catherine is an accredited Xero advisor with particular expertise in educating clients with accounting software and payroll setups.

Outside of the office she enjoys preparing creative cuisines and spending time with her family.

Charlie Wright

Charlie joined BSA in 2018 after connecting with Greg at a CAANZ event, where their values immediately aligned and after graduating from Monash University he’s never looked back. He has displayed a talent for providing detailed accounting solutions for SME’s, family groups and individual clients, and holds expertise in corporate affairs and ASIC requirements. Charlie is passionate and knowledgeable on practically all sports, particularly Aussie Rules and American football.

Manasa Nellori

Manasa has been with BSA since the beginning of 2019 and has quickly become a valuable member of our Self-Managed Superannuation Fund team, assisting with Fund Compliance and administration.

In her spare time she loves brunching with friends and what she doesn’t know about modern popular culture simply isn’t worth knowing.

Our Senior Staff


Stuart Waters

Working as the Client Services Coordinator for Mark Brownell, Greg Ziegler & Dylan Neilsen, Stuart is the initial point of contact for clients and efficiently liaises with accounting staff to ensure a streamlined delivery of services, applying a modern approach to the administration of the team.

Trish Booth

Working as the Personal Assistant for David Barnes, Trish assists clients and directs them to the appropriate team member’s as well as handling the administrative work for the team. Trish has completed a Certificate IV in Bookkeeping and her knowledge and experience complement our professional team.

Bronya Lawson

Bronya is the Financial Administrator
and is responsible for the administering and overseeing the financial requirements of the firm.

Bronya has been working for BSA since its inception.