Deputy Chief Minister Philip Ozouf and the Australian High Commissioner to the UK, John Dauth, signed the deal in London yesterday.
The signing of the TIEA with Australia means that Jersey has now put its name to 14 TIEAs, 12 of which are with OECD member States.
The Island is also close to signing agreements with Italy and New Zealand, with whom negotiations have been completed, and work is under way to secure agreements with Canada and Spain.
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