What is a BAS statement in Australia?

Answer

A Business Activity Statement (BAS) is a tax form lodged with the Australian Taxation Office (ATO) by businesses registered for Goods and Services Tax (GST). It reports GST, Pay As You Go (PAYG) instalments, PAYG withholding, and other taxes.

Australian Taxation Office (ATO)
Last Updated:May 5, 2026

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How it works in practice

Understanding the BAS Statement

A Business Activity Statement (BAS) is a mandatory form that most Australian businesses registered for GST must lodge with the Australian Taxation Office (ATO). It serves as a comprehensive report for various tax obligations, streamlining the reporting process into a single document. This includes reporting Goods and Services Tax (GST) collected and paid, Pay As You Go (PAYG) income tax instalments, PAYG withholding tax from employee wages, and other taxes such as luxury car tax or wine equalisation tax.

Why the BAS is Important

The BAS helps businesses meet their tax compliance obligations efficiently. By consolidating multiple tax types into one statement, it simplifies administration and ensures that businesses regularly account for their tax liabilities and entitlements. Lodging a BAS allows businesses to claim back GST credits on purchases and ensures they are paying their fair share of various taxes throughout the financial year, rather than as a single lump sum at year-end. Accurate and timely lodgement is crucial to avoid penalties and manage cash flow effectively.

Important exceptions

Not all businesses need to lodge a BAS. Only those registered for GST, typically with an annual turnover of $75,000 or more (or $150,000 for non-profit organisations), are required to do so. Businesses that are not registered for GST, or those that have simpler tax arrangements, may not need to lodge a BAS. Specific reporting requirements can also vary based on business size and structure.

What you should do now

  1. Ensure your business is registered for Goods and Services Tax (GST) with the ATO if your turnover exceeds the threshold.

  2. Maintain accurate and up-to-date records of all your business income, expenses, GST collected, and GST paid.

  3. Calculate your tax obligations, including GST, PAYG instalments, and PAYG withholding, for the relevant reporting period.

  4. Lodge your Business Activity Statement (BAS) with the Australian Taxation Office (ATO) online via ATO online services, your accounting software, or through a registered tax agent.

  5. Pay any outstanding tax liabilities by the due date to avoid penalties, or receive your refund if you are owed money.

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