Income tax expense represents the sum of the tax currently payable.
The tax currently payable is based on taxable surplus for the year. Taxable surplus differs from surplus as reported in the statement of comprehensive income because of items of income or expense that are taxable or deductible in other years and items that are never taxable or deductible. The company's liability for current tax is calculated using tax rates that have been enacted or substantively enacted by the end of the reporting period.
Current tax is recognised in surplus or deficit for the year, except when it relates to items that are recognised in other comprehensive income in which case current tax is recognised in other comprehensive income.