# Response

## Taxable Income Threshold for 45% Top Marginal Rate

**$180,000**

The top marginal income tax rate of 45 per cent applies to taxable income above $180,000 in the 2025-26 financial year.

## Controlling Authority

**The Australian Parliament**

The resident individual income tax rates are set by the Australian Parliament through legislation, primarily the *Income Tax Rates Act 1986* (Cth) and related tax legislation. The rates are determined by Parliament and can only be changed through the passage of new legislation.