Younger, poorer Australians will bear the brunt of an eyewatering $324.2bn increase in income tax payments over the next 10 years, with recent tax cuts effectively doing nothing to ease the burden.

Figures released on Thursday by the Parliamentary Budget Office forecasts a 90 per cent rise in personal income tax collection to $682bn over the next 10 years, compared with $357.8bn paid today.

This comes despite the hotly debated stage 3 tax cuts, which were amended in 2024 to broaden the benefit of the original plan which heavily favoured wealthier Australians.

The original stage 3 tax cuts aimed to ‘flatten’ the tax system by combining two brackets into one 30 per cent marginal rate for income between $45,001 and $200,000, and address bracket creep by pushing out the top tax bracket fro

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