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Leahy Lewin Lowing Sullivan Lawyers

John Leahy

John Leahy

Leahy Lewin Lowing Sullivan Lawyers
Papua New Guinea

tel: +675 320 3333
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John practises law mainly in resources law, taxation, corporate, telecommunications, and government relations and in assisting innumerable foreign direct investors establish themselves in PNG. He has significant experience in negotiating state agreements for major resources projects in PNG (in the tuna, oil refining, oil & gas and nickel industries in particular), drafting legislation (both on behalf of governments, specifically Australia and PNG,
and on behalf of clients proposing legislative reforms). He is also a leading tax practitioner in PNG.


Bachelor of Jurisprudence (University of New South Wales)
Bachelor of Laws (University of New South Wales)
Graduate Certificate in Management (Monash Mt Eliza Business School)
Admitted to practice as a solicitor in NSW (1982) and as a lawyer in PNG (2006) and
is a member of the PNG Law Society
Areas of Practice
Professional Career

Professional Activities and Experience

Prior to taking up a senior position with the Internal Revenue Commission (IRC) in PNG in 1987, John was a senior advising officer with Policy and Legislation Directorate of the Australian Taxation Office in Canberra. Then from 1987 - 1990, he was the Assistant Commissioner (Mining & Special Projects) for the IRC. In that capacity he was responsible for new and amending legislation and was deeply involved in the development of tax policy in PNG across all sectors but particularly in the resources sector. He was responsible in 1988 for drafting major amendments to the income tax legislation as regards mining and petroleum companies to accommodate the use of unincorporated joint ventures as well as a rewrite of the Stamp Duties Act. He was also a member of the negotiating team for the double tax agreements with Australia, Singapore, the United Kingdom and Germany.

He was Partner responsible for tax services in Papua New Guinea for Deloitte and subsequently PricewaterhouseCoopers for approximately 14 years in total (and at various times managing partner of both firms) as well as a tax partner with Deloitte in Perth, Western Australia for several years. He has been in legal practice with Leahy Lewin Lowing Sullivan Lawyers (and its antecedents) since 2006.

WSG's members are independent firms and are not affiliated in the joint practice of professional services. Each member exercises its own individual judgments on all client matters.

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