The request sought the number of individuals affected by each stage and component of the 2018-19 Budget measure Personal Income Tax Plan. The request also sought a breakdown of the number of individuals affected by component and by gender. The components of the tax plan are as follows:

Component 1 introduces the Low and Middle Income Tax Offset of up to $530 for individuals with taxable income up to $125,333 for the 2018-19, 2019-20, 2020-21 and 2021-22 financial years.

Component 2 increases the upper threshold for the 32.5 per cent marginal tax rate from $87,000 to $90,000 from 1 July 2018.

Component 3 increases the upper threshold for the 32.5 per cent marginal tax rate from $90,000 to $120,000 from 1 July 2022.

Component 4 increases the upper threshold for the 19 per cent marginal tax rate from $37,000 to $41,000 from 1 July 2022.

Component 5 increases the Low Income Tax Offset to up to $645 for taxable incomes up to $66,667 from 1 July 2022.

Component 6 increases the lower threshold for the 45 per cent marginal tax rate from $180,001 to $200,001 from 1 July 2024. 

Component 7 removes the 37 per cent marginal tax rate, so that all income from $41,001 to $200,000 is taxed at a marginal rate of 32.5 per cent from 1 July 2024.