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  • Income tax estimator

    We produce tax calculators to help you work out your tax refund or debt estimate for previous years. You can use these to estimate your tax payable and also calculate your:

    • Medicare levy
    • Medicare levy surcharge
    • Higher Education Loan Program (HELP) / Student Start-up Loan (SSL) / Trade Support Loan (TSL) repayment
    • Student Financial Supplement Scheme (SFSS) repayment
    • any tax offsets that may apply.

    The calculators also take other tax credits into account when estimating your tax refund or debt.

    Information you will need:

    • total gross income payments you received
    • total amount of tax that was withheld
    • total amount of deductions to claim
    • your residency status for taxation purposes
    • details of your tax credits and any tax offsets you are entitled to claim.

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

    What's new for 2017-18

    The following tax offsets have been changed:

    • Early stage venture capital limited partnership, and
    • Early stage investor.

    There are now two amounts to be included if applicable:

    • Current year tax offset, and
    • Unused tax offset carried forward from a previous year.

    As this calculator has only one data entry field for each of these tax offsets, you will need to sum both of these amounts, if applicable, before entering the total into the single data entry field.

    For more detailed information about these two tax offsets and examples, see the Early stage venture capital limited partnership and Early stage investor.

    From 1 July 2017, travel expenses relating to a residential investment property are not deductible. For more information, see Rental properties – travel expenses.

    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 income that was subject to averaging
    • had superannuation concessional contributions in excess of your concessional contributions cap.


    This calculator will give you an estimate only. All outcomes provided by this calculator are based on the information you provide at the time of calculation. You should use the outcomes as an estimate and for guidance purposes only.

    The actual amount of your tax payable or refund will depend on the information you provide in your tax return and on the balance of your account at the time of assessment.

    Next step:

    To estimate your 2016, 2017 and 2018 tax refund or debt:

    Simple tax calculations

    Use this Simple tax calculator if you don't want or need a detailed calculation.

    Last modified: 29 Jun 2018QC 16693