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eg set up a company that you own, hide the nature of the ownership, invoice yourself for fictitious services...would be fraud using TP and therefore illicit. Similarly frauds with interest or derivatives
But there are also legitimate disagreements, questions of interpretation, valuation on TP, interest, derivatives where the result might go one way or another but where the details of the transaction itself were not hidden from the revenue (e.g. the BHP/ATO say...)
