86The average effective tax rate is the tax expense (income) divided by the accounting profit.

86 The average effective tax rate is the tax expense (income) divided by the accounting profit. 87 It would often be impracticable to compute the amount of unrecognised deferred tax liabilities arising from investments in subsidiaries, branches and associates and interests in joint arrangements (see paragraph 39). Therefore, this Standard requires an entity to disclose the aggregate amount of the underlying temporary differences but does not require disclosure of the deferred tax liabilities. Nevertheless, where practicable, entities are encouraged to disclose the amounts of the unrecognised deferred tax liabilities because financial statement users may find such information useful. 87A Paragraph 82A requires an entity to disclose the nature of the potential income tax consequences that would result from the payment of dividends to its shareholders. An entity discloses the important features of the income tax systems and the factors that will affect the amount of the potential income tax consequences of dividends. 87B It would sometimes not be practicable to compute the total amount of the potential income tax consequences that would result from the payment of dividends to shareholders. This may be the case, for example, where an entity has a large number of foreign subsidiaries. However, even in such circumstances, some portions of the total amount may be easily determinable. For example, in a consolidated group, a parent and some of its subsidiaries may have paid income taxes at a higher rate on undistributed profits and be aware of the amount that would be refunded on the payment of future dividends to shareholders from consolidated retained earnings. In this case, that refundable amount is disclosed. If applicable, the entity also discloses that there are additional potential income tax consequences not practicably determinable. In the parent’s separate financial statements, if any, the disclosure of the potential income tax consequences relates to the parent’s retained earnings. 87C An entity required to provide the disclosures in paragraph 82A may also be required to provide disclosures related to temporary differences associated with investments in subsidiaries, branches and associates or interests in joint arrangements. In such cases, an entity considers this in determining the information to be disclosed under paragraph 82A. For example, an entity may be required to disclose the aggregate amount of temporary differences associated with investments in subsidiaries for which no deferred tax liabilities have been recognised (see paragraph 81(f)). If it is impracticable to compute the amounts of unrecognised deferred tax liabilities (see paragraph 87) there may be amounts of potential income tax consequences of dividends not practicably determinable related to these subsidiaries. 88 An entity discloses any tax-related contingent liabilities and contingent assets in accordance with AASB 137 Provisions, Contingent Liabilities and Contingent Assets. Contingent liabilities and contingent assets may arise, for example, from unresolved disputes with the taxation authorities. Similarly, where changes in tax rates or tax laws are enacted or announced after the reporting period, an entity discloses any significant effect of those changes on its current and deferred tax assets and liabilities (see AASB 110 Events after the Reporting Period). International tax reform—Pillar Two model rules 88A An entity shall disclose that it has applied the exception to recognising and disclosing information about deferred tax assets and liabilities related to Pillar Two income taxes (see paragraph 4A).