Tax Calculator 2025-25 Australia. Use this service to estimate how much income tax and national insurance you should pay for the current tax year (6 april 2024 to 5 april 2025). Whether you are following the old regime or the new tax regime, this calculator helps you make informed decisions.

Our income tax calculator excel is designed to simplify the process. Some taxpayers will receive their tax cut when a tax return is lodged and processed after the end of the 2024‑25 financial year.