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William Kontaxis

BBus, JD, MTax

Senior Associate - Sydney

Areas of Expertise

Corporate & Commercial Law, Mergers and Acquisitions, Finance


William is a corporate lawyer with extensive experience representing both private and public sector clients operating across a wide mix of industries – information technology, banking and finance, private lending, rideshare, not-for-profit, aged care, manufacturing, retail, education and early-learning sectors to name a few. 

William’s clients range from start-ups and owner-managed SMEs through to ASX listed companies, financial institutions and government, and he has considerable experience with cross-border transactions acting for both listed and unlisted foreign companies on their Australian transactions.

William acts in all aspects of corporate transactions, including:

  • mergers and acquisitions
  • corporate structuring
  • capital reductions and share buy-backs
  • private capital raisings
  • private lending and security arrangements 
  • shareholder and joint venture agreements
  • shareholder disputes
  • commercial agreements.


William’s experience includes:

Mergers & Acquisitions

  • advised on the sale of a leading national child care services chain to a private equity group
  • advised on the sale of a leading IT services provider to a Big 4 accounting firm
  • advised on the sale of a clinical research organisation to a large Netherlands-based trade buyer
  • advised on the asset sale of a technology start-up in administration.


  • advised the Australian subsidiary of a NY listed, global technology services company on its acquisition of a leading Australian IT services company in the Oracle space
  • advised a UK listed content publisher and retailer on the sale of its Australian operations
  • advised an international ride-share service operator on the establishment and launch of its Australian business
  • advised a US parent company selling its Australian and New Zealand retail distribution businesses
  • advised an Australian agriculture business on its China distribution arrangements.

Banking & Finance

  • advised a banking institution on the introduction of an innovative social impact banking product and associated technology system
  • advised a banking institution on the development of a ‘shared equity’ affordable housing product
  • advised a private lender on its construction loan and security arrangements with borrowers in the property development space
  • developed and implemented a new suite of loan and security documents for a leading financier of social enterprises.


  • advised a prominent Australian fashion manufacturer / retailer on a refinance under a convertible loan note
  • advised an established wealth management business on a financial assistance whitewash
  • advised a global hospitality group on its proposed joint-venture agreement with an Australian hotels operator
  • advised an education services provider on proposed shareholder loans.

Charities & Not-for-Profits

  • advised a client during the RFP phase of a significant social infrastructure project/ public-private partnership with the NSW Government
  • managed a national privacy law project for a major charitable institution
  • advised on fundraising and sponsorship agreements and general commercial transactions.


Law Society of New South Wales


30 September 2019 - Knowledge

How to sell your business without losing business: Signing is just the beginning (Part 4)

#Corporate & Commercial Law

In the last of our four-part series on selling your business without losing business, we provide some useful tips for navigating the post-signing or pre-completion phase as smoothly and pain-free as possible.

23 September 2019 - Knowledge

How to sell your business without losing business: The pre-sale restructure (Part 3)

#Corporate & Commercial Law

As a business grows, it is not uncommon for new companies to be added to the ‘group’ in a piecemeal fashion. This can lead to a needlessly complex corporate structure without proper regard for the long-term goals of the group or its majority owners.

16 September 2019 - Knowledge

How to sell your business without losing business: Assembling your A-team (Part 2)

#Corporate & Commercial Law

This second of our four-part series on selling a business without losing business looks at who owners should recruit to their crack commando unit, and when to pull them in to facilitate a smooth and successful sale.