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Income Taxes
3 Months Ended
Sep. 30, 2020
Income Taxes [Abstract]  
Income Taxes (6)      Income Taxes

In accordance with ASC 740 Income Taxes, each interim reporting period is considered integral to the annual period, and tax expense is measured using an estimated annual effective tax rate. An entity is required to record income tax expense each quarter based on its annual effective tax rate estimated for the full fiscal year and use that rate to provide for income taxes on a current year-to-date basis, adjusted for discrete taxable events that occur during the interim period.

Our income tax returns are based on calculations and assumptions subject to audit by various tax authorities. In addition, the calculation of our tax liabilities involves dealing with uncertainties in the application of complex tax laws. We regularly assess the potential outcomes of examinations by tax authorities in determining the adequacy of our provision for income taxes. Any final assessment resulting from tax audits may result in material changes to our past or future taxable income, tax payable or deferred tax assets, and may require us to pay penalties and interest that could materially adversely affect our financial results.

We are under audit by the ATO in three different cycles: tax years 2009 to 2013, tax years 2014 to 2017 and tax year 2018. We received Notices of Amended Assessments from the ATO for the tax years 2009 to 2013. Based on these assessments, the ATO asserted that we owe $151.7 million in additional income tax and $38.4 million in accrued interest, of which $75.9 million was paid in April 2018 under a payment arrangement with the ATO. In June 2018, we received a notice from the ATO claiming penalties of 50% of the additional income tax that was assessed, or $75.9 million. As of September 30, 2020, we recorded a receivable in prepaid taxes and other non-current assets for the amount paid in April 2018 as we ultimately expect this will be refunded by the ATO. We do not agree with the ATO’s assessments and we continue to believe we are more likely than not to be successful in defending our position. However, if we are not successful, we will not receive a refund of the amount paid in April 2018 and we would be required to pay the remaining additional income tax, accrued interest and penalties, which would be recorded as income tax expense.