How to Navigate BAS Returns for Small Businesses in Australia

Jun 05, 2026By Anas Khawam
Anas Khawam

Running a small business in Australia involves a variety of responsibilities, and one crucial aspect is managing your Business Activity Statement (BAS). For many, navigating BAS returns can seem daunting at first, but understanding the process can make it much more manageable.

Understanding BAS

The Business Activity Statement is a tax reporting requirement for businesses registered for GST. It helps you report and pay several tax obligations, including GST, PAYG installments, PAYG withholding, and other taxes. Ensuring accurate BAS returns is critical for maintaining compliance with the Australian Taxation Office (ATO).

business tax

When to Lodge Your BAS

BAS lodgment frequency depends on your business size and turnover. Small businesses generally lodge their BAS quarterly, although some may need to report monthly or annually. The ATO will inform you of your lodgment schedule. It's essential to adhere to these deadlines to avoid penalties.

Quarterly Lodgment

Most small businesses will lodge their BAS every quarter. The due dates are typically:

  • 28th October (for July - September)
  • 28th February (for October - December)
  • 28th April (for January - March)
  • 28th July (for April - June)
calendar deadline

Preparing Your BAS

Preparation is key to ensuring a smooth lodgment process. Accurate and up-to-date records of all your business transactions are essential. Consider using accounting software to automate and simplify this process. These tools can help track your expenses, income, and calculate GST payable or refundable.

Key Components to Report

When preparing your BAS, pay attention to the following components:

  1. GST: Report GST collected on sales and GST paid on purchases.
  2. PAYG Withholding: If you have employees, report the tax withheld from their wages.
  3. PAYG Installments: If applicable, report the installments towards your expected income tax.
financial software

Submitting Your BAS

Once your BAS is prepared, you can submit it online through the ATO’s Business Portal, via your accounting software, or through a registered tax or BAS agent. Online submission is often the most efficient method, providing instant confirmation and a clear audit trail.

After submission, ensure you have a plan to pay any amounts owed by the due date. The ATO offers several payment options, including BPAY, credit card, and direct debit.

Common Challenges and Solutions

Many small businesses face challenges when dealing with BAS, such as cash flow issues or complex GST calculations. To mitigate these, consider:

  • Regular bookkeeping to stay on top of financials.
  • Seeking professional advice from a tax consultant or BAS agent.
  • Using ATO resources and tools for guidance.
professional consultation

Properly managing your BAS returns can save your business time and money in the long run. By staying informed and organized, you can ensure compliance and focus on growing your business. Remember, if you're ever in doubt, professional advice is invaluable. Taking the time to understand and manage your BAS effectively is a smart investment in your business's future.