The ATO’s required standard for tax documentation is “perfect”
ATO data matching has always existed. It is mostly used to pre-fill reports on tax returns, which can be helpful. Increasingly, the ATO has been using data matching to find inconsistencies in tax returns. In some cases, this approach seems to be focussed only on whether there is a technical breach of a tax law, with no consideration made of whether there has been any real tax mischief.