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Income tax estimator

Work out your tax refund or debt estimate for the 2015–16 to 2023–24 income years.

Last updated 30 June 2024

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Income tax estimator

Our calculator takes between 15 and 25 minutes to use.

What you can do with the calculator

For the income years 2019–20 to 2023–24 the calculator will estimate tax refund or debt. The calculator uses your tax payable along with your:

  • Medicare levy surcharge
  • Income Contingent Loan (ICL) repayments (also known as Study and training loan repayments), including Higher Education Loan Program (HELP), Student Start-up Loan (SSL), Student Financial Supplement Scheme (SFSS) and Trade Support Loan (TSL)
  • any tax offsets that may apply.

For income years before 2019–20 the calculator will estimate your tax refund or debt. The calculator uses your tax payable and calculate your:

  • Medicare levy surcharge
  • HELP, SSL or TSL repayment
  • SFSS repayment
  • any tax offsets that may apply.

Your estimate is based on the information you provide at the time of the calculation. It doesn't include any outstanding balance or debts (including debts on hold) you have with us. Use the result for guidance purposes only.

The exact tax payable or refund amount will only be calculated when you lodge your tax return with us.

What you will need

  • Total gross income payments you received.
  • Total amount of tax that was withheld.
  • Total amount of deductions you can claim.
  • Your residency status for tax purposes.
  • Details of your tax credits and any tax offsets you can claim.
  • Amount of Medicare levy you have to pay, use the Medicare levy calculator to work this out.

You may need additional information, depending on your circumstances and what you choose to calculate.


You will not be able to use this calculator if you:

  • had a spouse for only part of the year
  • had an employment termination payment
  • had a lump sum payment in arrears
  • had a lump sum payment because you retired or finished working in a job
  • were under 18 years and had unearned income such as interest, dividends or other investment income
  • received credit for any tax paid by a trustee
  • had exempt foreign employment income
  • had an amount released under the First home super saver scheme
  • had income that was subject to averaging
  • had superannuation concessional contributions more than your concessional contributions cap.

What else you can do

You can also use the Simple tax calculator to work out just the tax you owe on your taxable income for the full income year.