As overseas travel became more common in the 1960s, the ATO stopped issuing tax clearance certificates (which had previously reminded Australians planning on travel that they must ensure they had paid all tax owed prior to leaving the country).
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Fact 21
Substantiation
Evidence of allowable deductions. Taxpayers must keep documents and records that can be used to prove they actually incurred the expenses they have claimed. These records must generally be kept for five years after they are claimed on a tax return.
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