BAS due dates guide for Australian businesess for 2025
This comprehensive BAS due dates guide for Australian businesses for 2025 provides essential information to help business owners meet their tax obligations on time. Understanding and adhering to Business Activity Statement (BAS) lodgment deadlines is crucial for maintaining compliance with the Australian Taxation Office (ATO) requirements and avoiding costly penalties. This guide breaks down all the important due dates, explains reporting and payment cycles, and offers practical tips to help your business stay on track throughout the 2025 financial year.
Understanding Business Activity Statements
1A Business Activity Statement (BAS) is a form that registered businesses must lodge with the Australian Taxation Office (ATO) to report and pay various tax obligations. These typically include Goods and Services Tax (GST), PAYG withholding, PAYG instalments, and potentially other taxes such as luxury car tax, wine equalisation tax, and fuel tax credits.
Lodging your BAS is not just a legal requirement—it’s an essential part of managing your business’s cash flow effectively. Regular BAS lodgment helps businesses maintain compliance with Australian tax laws, keep track of tax liabilities throughout the year, manage cash flow more effectively, avoid penalties and interest charges from the ATO, and maintain accurate financial records.
Every business registered for GST must lodge BAS statements, though the frequency depends on your business’s annual turnover and structure. Failing to lodge your BAS on time can result in significant penalties, making it essential to understand and plan for these critical deadlines.
BAS Reporting Frequencies
The ATO determines how often you need to lodge your BAS based primarily on your annual GST turnover:
Quarterly BAS Reporting
Most small to medium businesses with an annual GST turnover of less than $20 million will report on a quarterly basis. This means completing and lodging four BAS forms per year during the quarterly BAS reporting cycle.
Monthly BAS Reporting
If your business has an annual GST turnover of $20 million or more, you’ll need to lodge your BAS monthly. Additionally, businesses with PAYG withholding of more than $20,000 per year may need to report PAYG monthly while reporting GST quarterly. For example, you may need to lodge a July monthly BAS or other monthly activity statements.
Annual Reporting
Some smaller businesses that are voluntarily registered for GST with an annual turnover below $75,000 (or $150,000 for non-profit organizations) may be eligible to report and pay GST annually. This is referred to as an annual BAS or annual reporting cycle.
Understanding your reporting frequency is the first step to ensuring you never miss a due date. If you’re unsure about your reporting frequency, review your business registration details or contact a registered tax agent or the ATO for guidance.
To avoid costly penalties and common errors with GST withholding obligations, read our article on GST Withholding Penalties Guide.
Key BAS Due Dates for 2025
Quarterly BAS Due Dates 2025
For businesses on a quarterly reporting cycle, these are the critical dates to mark in your calendar:
Quarter 1 (July – September 2025)
- Self-lodgment due date: 28 October 2025
- Tax or BAS agent lodgment due date: 25 November 2025
Quarter 2 (October – December 2025)
- Self-lodgment due date: 28 January 2026
- Tax or BAS agent lodgment due date: 25 February 2026
Quarter 3 (January – March 2025)
- Self-lodgment due date: 28 April 2025
- Tax or BAS agent lodgment due date: 26 May 2025
Quarter 4 (April – June 2025)
- Self-lodgment due date: 28 July 2025
- Tax or BAS agent lodgment due date: 25 August 2025
If any due date falls on a weekend or public holiday, the deadline extends to the next business day. Setting calendar reminders ahead of these quarterly BAS due dates can help avoid late submissions.
Monthly BAS Due Dates for Lodging in 2025
For businesses required to lodge monthly activity statements, the due date is generally the 21st day of the month following the taxable period:
- January monthly BAS: Due by 21 February 2025
- February monthly BAS: Due by 21 March 2025
- March monthly BAS: Due by 21 April 2025
- April monthly BAS: Due by 21 May 2025
- May monthly BAS: Due by 21 June 2025
- June monthly BAS: Due by 21 July 2025
This schedule continues throughout the year. For example, December’s activity statement will be due by January of the following year.
Mixed Reporting Requirements
Some businesses may have different reporting frequencies for various tax obligations. For instance:
- If you have employees and withhold more than $20,000 per year in PAYG withholding but report GST quarterly, you’ll need to lodge an Instalment Activity Statement (IAS) for PAYG withholding in months one and two of each quarter while lodging a full quarterly BAS in month three.
This mixed schedule can become complex, so working with a registered tax or BAS agent can help ensure compliance across all obligations.
Lodging Your Business Activity Statement
There are several ways to lodge your own BAS in Australia:
- Online through platforms like myGov or the ATO Business Portal.
- Using Standard Business Reporting-enabled software.
- Engaging a registered tax professional or registered BAS agent who can assist with preparing, lodging, and managing your activity statements.
Working with a registered tax or BAS agent also provides access to extended deadlines in some cases and ensures accuracy when lodging your activity statements.
Avoiding Common Mistakes When Lodging Your Own BAS
Many business owners encounter issues when lodging their own activity statements that can lead to penalties or delays in receiving refunds. Here are some common mistakes:
- Missed Deadlines: Always set calendar reminders ahead of time.
- Incorrect Reporting Method: Ensure consistency in using either cash or accrual accounting methods.
- Calculation Errors: Double-check figures related to GST turnover, PAYG withholding amounts, and other taxable amounts before submitting.
- Failure to Pay Your BAS on Time: Late payments may result in General Interest Charges from the ATO.
To avoid late lodgment penalties and confusion about your business tax reporting, read our article on How to Lodge Your BAS for a clear, step-by-step guide to staying compliant and meeting all key deadlines1
Penalties for Late Lodgment
The ATO imposes penalties if you miss a due date for lodging your activity statement:
- Failure-to-Lodge Penalties: Calculated based on how overdue your lodgment is.
- General Interest Charges (GIC): Applied daily on unpaid amounts until they are settled.
To avoid these penalties, consider paying your BAS early or setting up a payment plan if cash flow is tight during certain months of the reporting cycle.
How ACT Tax Group Can Help With Your BAS Obligations
At ACT Tax Group, we specialize in helping Australian businesses manage their ongoing tax obligations efficiently. Whether you’re a sole trader managing quarterly reporting or a larger organization handling monthly reporting cycles, we provide tailored support that includes:
- Preparing and lodging all types of activity statements.
- Ensuring accurate GST reporting.
- Advising on payment summaries and potential refunds.
- Managing communication with the Australian Taxation Office ATO.
- Offering strategic advice for improving cash flow around payment cycles.
Partnering with us ensures peace of mind when managing complex reporting requirements like PAYG instalments or fuel tax credits while keeping you compliant with all relevant laws.
Conclusion
Understanding when your BAS is due—whether it’s part of quarterly reporting cycles or monthly bas reporting—is essential for maintaining compliance with the Australian Taxation Office ATO. By staying informed about key dates like those outlined above and implementing practical strategies like setting calendar reminders or working with a professional tax agent, you can ensure smooth management of all your business’s tax obligations in Australia.
If you’re looking for expert assistance with lodging and paying any type of activity statement—whether it’s related to GST turnover, PAYG instalments, or other taxes—contact ACT Tax Group today! Let us handle your compliance so you can focus on growing your business confidently into the future.
