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The ATO has compiled a list of common BAS errors that are made by business owners when submitting their BAS. This list has been created with the intention to help solve and prevent common BAS errors.


Any business that is registered or required to be registered for GST and PAYG Withholding is required to prepare their Business Activity Statements (BAS) in order to report and pay their tax obligations. Some of the things a business may need to include in their statement include:

  1. GST;
  2. PAYG Instalments;
  3. PAYG Withholding;
  4. Fringe benefits tax; and
  5. Luxury car tax.


Common BAS errors – General Problems and Solutions

(Click Problem for Solution)


Problem: Including wages and superannuation contributions as purchases at G11


You must report wages at W1. You don’t need to report superannuation contributions.

Problem: Not registering with the ATO for tax obligations reported in your activity statement.


It is important to ensure that you are correctly registered for all your tax obligations. To register or cancel registration for PAYG withholding, goods and services tax, luxury car tax or wine equalisation tax, contact the ATO on 13 28 66.

Problem: Not notifying the ATO of the accounting method used.


If you are new to business reporting, notify the ATO on 13 28 66.

Problem: Not including cash taken from the till to pay for purchases.


Total sales (G1 on your BAS) should include all cash payments made out of the till for purchases.

Problem: Lodging blank forms.


When lodging statements with nothing to report at any label (a nil statement), insert zeros against labels 1a, 1b and 9.

Problem: Lodging printed activity statements


You must lodge original activity statements with the Australian Taxation Office (ATO)

Problem: Using the Incorrect accounting method.


If you are using the cash accounting method and your business turnover is expected to exceed $1 million, you must change to the accrual accounting method and notify the ATO at 13 28 66. They will consider requests for continued use of the cash accounting method. However, approval is dependent on circumstances.

Problem: Including dollars and cents.


Show only whole dollars when completing your activity statement. To avoid processing errors and to allow us to issue any refund quickly, do not use cents, decimal points, commas, symbols or words such as $, nil and n/a.

Worried you might make one of these mistakes?