For the 2025-26 financial year, the top marginal income tax rate of 45% begins to apply to taxable income above $190,000.

Threshold: $190,000 (the 45% rate applies to each dollar of taxable income over $190,000). The Medicare levy is separate and is not included in this figure.

Working - resident individual marginal tax brackets, 2025-26:
- $0 - $18,200: nil
- $18,201 - $45,000: 16%
- $45,001 - $135,000: 30%
- $135,001 - $190,000: 37%
- $190,001 and above: 45%

The top bracket starts once taxable income exceeds $190,000, so the dollar threshold at which the 45% rate begins is $190,000.

Controlling authority: The resident individual income tax rates are set by the Income Tax Rates Act 1986 (Cth) (Schedule 7, Part I), under the broader Income Tax Assessment framework, and administered by the Australian Taxation Office (ATO).