Avoid Common BAS Return Mistakes: A Guide for Small Business Owners

May 27, 2026By Anas Khawam
Anas Khawam

Understanding BAS Returns

Business Activity Statements (BAS) are essential for small business owners in Australia. They help you report and pay several tax obligations, including GST, PAYG withholding, and other taxes. Navigating BAS returns can be challenging, and mistakes can lead to penalties and audits. By understanding the common pitfalls, you can manage your BAS more effectively.

business tax

Incorrect GST Reporting

One of the most frequent errors is incorrect GST reporting. It's crucial to ensure that you're only claiming GST credits for purchases directly related to your business. Double-check each claim to avoid inaccuracies. Remember, personal expenses are not eligible for GST credits.

Also, be vigilant in collecting GST on all taxable sales. Failing to do so can result in underreporting and subsequent penalties. Regularly reviewing your transactions can help maintain accuracy.

Miscalculating PAYG Withholding

Another common mistake involves PAYG withholding. Small business owners sometimes miscalculate the amount to withhold from employees' wages. It's essential to use the correct tax tables and formulas provided by the Australian Taxation Office (ATO) to determine the right amount. Regular audits of your payroll process can help mitigate these errors.

payroll calculation

Overlooking Deadlines

Missing BAS lodgment deadlines can incur late fees and interest charges. Mark all relevant dates on your calendar and set reminders to ensure timely submission. If possible, consider lodging your BAS early to avoid last-minute issues.

Utilizing accounting software can also streamline this process, providing automated alerts for upcoming deadlines.

Errors in Record Keeping

Accurate record-keeping is fundamental for BAS returns. Ensure that all financial transactions are documented and categorized properly. Poor record-keeping can lead to incorrect BAS submissions and potential audits. Consider investing in robust accounting software to help maintain accurate records.

accounting software

Not Seeking Professional Help

Small business owners often try to manage their BAS returns independently. However, enlisting the help of a professional accountant can save time and reduce errors. Accountants are well-versed in tax laws and can offer valuable insights to optimize your BAS process.

While it may seem like an added expense, professional guidance can ultimately save money by preventing costly mistakes.

Conclusion

Avoiding common BAS return mistakes is crucial for the smooth operation of your small business. By understanding the common pitfalls and implementing best practices, you can ensure accurate and timely BAS submissions. Consider leveraging technology and professional expertise to further safeguard your business against errors and penalties.