Tax

A market-leading team of tax law specialists

You have complex, high-value, and evolving needs with regards to your tax affairs. We are a full-service national tax law practice offering strategic and integrated advice on all commercial tax matters, from corporate to controversy, competing head-on with the Big 4 accountants.

Our focus is on innovative solutions-driven products leveraging our Australian, English, Chinese, European and Hong Kong law capabilities. Clients benefit from our full-service legal capability, meaning we can streamline and project manage the advisory process as well as safeguard client interests should a dispute arise.

For M&A deals, you can rest assured that we are the pre-eminent firm in Australia and across Asia, offering bespoke solutions and tried and tested ways to efficiently facilitate your income or capital flow. We are the market leading tax controversy firm, with a large team of dedicated tax law specialists focused on managing tax audits and litigation.

We are at the forefront of policy debate and development in multinational tax issues, driving change and taking policy insight back to our clients. Our tax experts also have considerable sector expertise in telecommunications, energy and resources, real estate, infrastructure, financial services, gaming and health.

It is our number one priority to not only get results, but to make the journey a good one. We make sense of complex tax systems, enabling you to do business more easily, manage your commercial risk and save money – wherever you are in the world.

We are the only firm recognised by Chambers and Partners as Band 1 for Tax, highlighting our standing in the market as Australia’s pre-eminent tax lawyers.

We have provided complex tax advice to some of the largest multinational corporations in the world, as well as many companies in the ASX 100. Some of our recent highlights include:

  • Google: advised Google on its well-publicised dispute with the ATO, which involves cutting edge international issues relating to the taxation of digital companies.
  • BHP: acted for BHP Ltd in High Court proceedings against the ATO relating to the application of the Controlled Foreign Company rules.
  • Latitude: on various taxation aspects of its proposed IPO together with Mallesons corporate and banking teams.
  • Telstra: on its A$2.8 million sale of a 49% interest in Telstra InfraCo Towers, the largest mobile tower infrastructure provider in Australia.
  • Chevron Australia: Conducting the appeal in the “Mega test case” for transfer pricing. It has been the subject of press coverage and parliamentary debate.
Industry Recognition
  • Band 1, Tax
    Chambers and Partners Asia-Pacific 2025
  • Tier 1, Tax
    Legal500 Australia 2025
Testimonials
  • KWM (Mallesons) have excellent technical tax knowledge, industry expertise and problem-solving skills.
    Chambers and Partners, Asia-Pacific
  • King & Wood Mallesons (Mallesons) have a strong relationship with counsel which is important in big multi-party litigation.
    Chambers and Partners, Asia-Pacific
  • They are the best tax firm in Australia. KWM (Mallesons) fields a full team of specialists who can cover all needs.
    Client quote
  • Easily the best law firm for tax advice.
    Client quote
  • Well regarded by the regulators.
    Client quote

Latest Thinking

Insight

Control, Alt, Relief: Parliament clarifies the merger rulebook

On 2 July 2026, the Treasury Laws Amendment (Strengthening Accountability for Tax Adviser Misconduct and Other Measures) Bill 2026 - which makes material clarifying changes to Australia’s merger control regime – was introduced into Federal Parliament

07 July 2026

Insight

Building momentum: 2026/27 State and Territory Budgets – stamp duty, land tax and payroll tax

Each State and Territory has now released its Budget for 2026/2027. There is a continued theme across the States and Territories of promoting cost of living relief during a time of global uncertainty.

25 June 2026

Insight

Tax Reforms affecting Australian Infrastructure Investment

Recent and proposed changes to Australia’s tax framework will materially affect the economics of infrastructure investment.

18 June 2026

Latest News

Deals

Mallesons advises EMR and Adaro on US$2.4bn Kestrel sale to Yancoal

Mallesons has advised EMR Capital and Adaro Capital on the sale of their 80% interest in the Kestrel coal mine to Yancoal Australia Ltd, a subsidiary of Yankuang Energy Group Company, for total consideration of up to US$2.4 billion.

17 April 2026

Deals

Mallesons advises NEXTDC on A$1 billion hybrid securities offer to support data centre expansion

Mallesons has advised NEXTDC Limited (ASX: NXT) on its A$1 billion hybrid securities offer. The hybrid securities are a rare 100-year subordinated debt instrument the proceeds of which will support the continued expansion of NEXT’s data centre platform.

14 April 2026

Deals

Mallesons advises AgBiTech on its sale to BASF Agricultural Solutions

Mallesons has advised AgBiTech, a global leader in biological crop protection solutions and a portfolio company of Paine Schwartz Partners (PSP), on its sale to BASF Agricultural Solutions, a division of German multinational BASF.

13 April 2026

Our Experts in Tax

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