Understanding the Business Activity Statement (BAS)
A Comprehensive Guide for Australian Businesses


Published October 25, 2024
by Ryan Sheppard
The Business Activity Statement (BAS) is an essential reporting tool for Australian businesses, required to fulfill tax obligations with the Australian Taxation Office (ATO). Introduced in July 2000 alongside the Goods and Services Tax (GST), the BAS simplifies the process of reporting various taxes and obligations. For any business registered for GST in Australia, lodging a BAS is mandatory. This guide covers what the BAS includes, how to lodge it, and why staying compliant is crucial.
What is Reported on a BAS?
Depending on your business’s size and structure, the BAS will cover multiple tax obligations. Here’s an overview of the main components:
GST (Goods and Services Tax)
The GST component is typically the most significant part of the BAS. Your business must report GST collected on sales and deduct GST paid on business expenses. The resulting net amount determines if you owe money to the ATO or are eligible for a refund.
PAYG Withholding
For businesses with employees, tax must be withheld from wages and reported on the BAS. This amount, submitted to the ATO, helps cover employees’ income tax liabilities.
PAYG Instalments
Some businesses are required to make PAYG instalments, which are prepayments toward the company’s annual tax liability. Based on income, these instalments help spread out tax payments across the year, reducing the need for a large lump-sum payment at year-end.
Fringe Benefits Tax (FBT) Instalments
If you provide fringe benefits to employees, such as company cars or entertainment, FBT payments may be required. These can also be included in your BAS.
Luxury Car Tax (LCT) and Wine Equalisation Tax (WET)
In specific industries, such as those involving luxury cars or alcohol sales, businesses may need to report LCT and WET on the BAS.
When is a BAS Due?
The frequency of BAS lodgement depends on your business’s size and turnover:
- Monthly: Required for businesses with a GST turnover of $20 million or more.
- Quarterly: For small to medium-sized businesses with a turnover under $20 million.
- Annually: Available for businesses with a GST turnover under $75,000 (or $150,000 for non-profits).
How to Lodge a BAS
Lodging your BAS with the ATO can be done in several ways:
- Online: Through the ATO Business Portal or myGov for sole traders.
- Through a tax agent: Many businesses work with registered BAS or tax agents to ensure accuracy and efficiency.
- By mail: Though less common today, some businesses still choose to submit paper BAS forms.
Consequences of Late Lodgement or Errors
Failing to lodge your BAS on time or making errors can lead to the following consequences:
- Penalties and interest charges: The ATO imposes fines for late lodgement.
- Audits or amendments: Errors in your BAS can prompt audits, resulting in corrections and potential costs.
Simpler BAS for Small Businesses
For small businesses with an annual turnover below $10 million, the ATO offers the “Simpler BAS” process. This streamlined system requires reporting only the following:
- GST on sales
- GST on purchases
- Total sales
The Simpler BAS reduces reporting requirements, saving smaller businesses time and effort.
Effectively managing your BAS obligations is essential to running a smooth and compliant business. By maintaining accurate records, lodging on time, and understanding tax components, you can avoid penalties and ensure compliance with the ATO. If you’re uncertain about your BAS requirements, consulting a registered tax or BAS agent can help you stay on track.
The BAS isn’t just about compliance; it’s also a tool to monitor your business’s financial health and prepare for tax liabilities.
For expert guidance on your BAS obligations, contact us at 07 3194 3070 or hello@sheppardadvisory.com.au. Our team is here to help you navigate regulations and strengthen your financial planning.
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