BAS Made Simple - What Every Business Owner Needs to Know
For many business owners, lodging a Business Activity Statement (BAS) is one of the most confusing and stressful parts of running a business. But it doesn’t have to be. With the right understanding and processes in place, BAS can become just another smooth step in your financial cycle.
What is BAS and who needs to lodge?
A BAS is a form submitted to the Australian Taxation Office (ATO) to report and pay certain taxes, including GST, PAYG instalments, and PAYG withholding tax. If your business is registered for GST, you’re required to lodge a BAS — either monthly, quarterly, or annually, depending on your turnover.
Key lodgement dates
For most small businesses lodging quarterly:
Q1 (July–September): Due 28 October
Q2 (October–December): Due 28 February
Q3 (January–March): Due 28 April
Q4 (April–June): Due 28 July
If you lodge monthly, BAS is due on the 21st of the following month. Working with a BAS Agent like Castlevale Bookkeeping often means extended lodgement deadlines.
Common BAS mistakes
Incorrectly claiming GST credits
Missing sales or expense transactions
Mixing personal and business expenses
Failing to keep proper documentation
These errors can lead to penalties or unnecessary ATO scrutiny.
Why use a registered BAS Agent?
BAS Agents are licensed to provide GST-related services and must meet strict education and experience requirements. Castlevale Bookkeeping ensures accurate calculations, timely lodgements, and ATO compliance — while also offering advice to improve your processes.
BAS doesn’t need to be a headache. With Castlevale Bookkeeping handling the details, you can lodge confidently, avoid penalties, and focus on running your business.
Book a BAS consultation with Castlevale Bookkeeping and make your next lodgement stress-free.