• If GDP adjusted amounts will not match your expected income or business turnover

    If you think the instalment amounts we calculate will be too high or too low, you can do one of the following:

    • pay the instalment amounts worked out by us and have any overpayments refunded – or make up any shortfall – once your income tax return or annual GST return is processed
    • vary your instalment amounts each quarter
    • work out your PAYG instalment or actual GST net amount yourself.
      Last modified: 22 Jun 2016QC 16312