A new analysis says that if the budget ditched the stage 3 tax cuts, Australia could save every threatened species and lots more. The Stage 3 tax cuts are a series of tax cuts that create a flat 30% tax rate for all Australians earning between $45,000 and $200,000 from July 2024. They will cost the budget around $243 billion over the next decade and benefit high-income earners more than low- and middle-income earners.