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Calculating amount to withhold

The easiest way to work out how much tax to withhold is to use our online tax withheld calculator or the tax tables.

Last updated 10 June 2025

Calculating PAYG withholding

The easiest and quickest way to work out how much tax to withhold is to use our online tax withheld calculator. Alternatively, you can use the range of tax tables we produce.

These take into account the:

  • tax-free threshhold
  • Medicare levy
  • study and training support loans.

If you withheld more tax than you should

Discovering your error early

If you withhold more tax than you should and you discover the error early, you must refund the extra amount you withheld to the payee, even if you have already paid the amount to us.

If you have already paid the amount to us, and you are:

Discovering your error late

If you withhold more tax than you should and you discover the error later than 30 June after the end of the financial year in which the withheld amount relates, do not refund the amounts to your payee – if you do, we cannot refund the amount to you.

To fix the error you need to:

If your payee has already lodged their income tax return for that financial year, they need to amend their tax return.

 

QC27065