Guides & Resources
Understanding PAYG Instalment Notices and Instalment Activity Statements (IAS)
Maximise 2026 tax savings.
PAYG instalments, IAS lodgements, due dates, variation rules, and ATO compliance explained. Expert guidance from a trusted Chartered firm.
When running a business, managing taxes is crucial to ensure compliance and avoid penalties. Two key elements of the Australian tax system that business owners often encounter are PAYG Instalment Notices and Instalment Activity Statements (IAS). In this blog, we’ll break down what they are, how they work, and what you need to know as a business owner.
What Is PAYG Instalment?
Q: What does PAYG stand for?
PAYG stands for Pay As You Go. It’s a system set up by the Australian Tax Office (ATO) where businesses and individuals make regular pre-payments towards their expected tax liability.
Q: What is a PAYG Instalment Notice?
A PAYG Instalment Notice is sent by the ATO to businesses or individuals who need to make regular payments towards their income tax. The instalments are based on your previous year’s tax return, helping you spread your tax payments throughout the year rather than paying a lump sum.
How Does PAYG Work?
Q: Who needs to pay PAYG instalments?
Typically, if your business income is above a certain threshold, you may need to pay PAYG instalments. The ATO will notify you if you are required to start making these payments. This can apply to both companies and sole traders.
Instalment Activity Statement (IAS) Explained
Q: What is an Instalment Activity Statement (IAS)?
An Instalment Activity Statement (IAS) is a form issued by the ATO for businesses required to report their PAYG instalments. Unlike the Business Activity Statement (BAS), which covers a wide range of taxes (e.g., GST, PAYG withholding), the IAS is specifically for reporting PAYG instalments when no GST is applicable.
Q: Who needs to lodge an IAS?
You need to lodge an IAS if you’re required to pay PAYG instalments but are not registered for GST. This is common for sole traders and small businesses who are below the GST turnover threshold but still have a taxable income that requires PAYG payments.
Key Differences Between BAS and IAS
Q: What’s the difference between BAS and IAS?
- BAS: Covers a wide range of tax obligations, including GST, PAYG withholding, and PAYG instalments.
- IAS: Only covers PAYG instalments (and sometimes PAYG withholding for businesses not registered for GST).
Q: Can I receive both BAS and IAS?
Yes, some businesses may receive both forms. For example, if you have employees (PAYG withholding) and are registered for GST, you will complete a BAS. If you only need to report PAYG instalments without GST, you will complete an IAS.
How to Pay PAYG Instalments
Q: How do I calculate my PAYG instalments?
The ATO typically offers two options:
- ATO Calculation Method: The ATO calculates your instalment amount based on your previous tax return.
- Self-Calculation Method: You estimate your own instalment amount based on your current income for the period.
Q: Can I vary my PAYG instalment amount?
Yes, if your business income changes, you can vary your PAYG instalment. However, be cautious when doing so; underestimating your income can lead to penalties from the ATO.
Lodging and Due Dates for IAS
Q: How often do I need to lodge an IAS?
Most businesses are required to lodge an IAS quarterly, aligning with the financial quarters (July-September, October-December, etc.). However, some businesses may need to lodge monthly based on their reporting obligations.
Q: What happens if I miss the due date?
If you miss the due date for lodging your IAS, the ATO may apply penalties and interest on the outstanding amounts. It’s crucial to meet these deadlines to avoid extra charges.
How Latitude Accountants Can Help
Navigating the PAYG and IAS requirements can be challenging, especially if you’re new to running a business or if your income fluctuates. At Latitude Accountants, we specialise in helping businesses understand their tax obligations and streamline the reporting process.
Q: Why choose Latitude Accountants for PAYG assistance?
- Expertise in Tax Law: Our team is well-versed in the latest specific tax regulations.
- Personalised Advice: We tailor our services to meet your specific business needs.
- Hassle-Free Lodging: We can handle all your PAYG instalments and IAS lodgements, ensuring you never miss a deadline.
Final Tips for Managing PAYG and IAS
- Keep Accurate Records: Ensure all income and expenses are recorded accurately throughout the year.
- Set Reminders for Lodgements: Use a calendar or software to track due dates.
- Consult an Accountant: When in doubt, reach out to a professional to avoid costly errors.
Contact Latitude Accountants Today
If you’re unsure about your PAYG or IAS obligations, don’t hesitate to get in touch. Our experienced team can provide you with tailored advice and support to ensure you stay compliant and avoid penalties.
Call us now or visit our website to book a consultation.
Disclaimer
The information provided in this blog is general in nature and for informational purposes only. It does not constitute financial, taxation, or legal advice. While we strive to ensure the accuracy and relevance of the content, tax laws and regulations are subject to change. We recommend consulting with a qualified accountant or tax professional, such as Latitude Accountants, for advice tailored to your specific circumstances. Latitude Accountants accepts no liability for any loss or damage incurred by reliance on the information presented in this blog.
Free Consultation
Got questions after reading this?
Book a call with our team. We'll walk through your situation and help you understand your options — no obligation.
Book Your Free Consultation*Free for all ABN holders · Limited spots available
Call 1300 706 597What We Do
Chartered accountants who work proactively
Not just at tax time — all year round.
Before You Make a Move
Six times you should call us first
Most costly mistakes happen before the paperwork is signed.
Buying a vehicle
Structure, FBT, and depreciation all need to be right before you sign.
Taking money out
Wages, dividends, or drawings each carry different tax consequences.
Buying property
Who buys it changes your GST, land tax, and CGT position entirely.
Hiring your first employee
Payroll, super, and STP obligations kick in from day one.
Buying or selling a business
You can inherit someone else's tax debt. Know what you're buying first.
Taking on a partner
Equity splits need proper structure upfront. A handshake deal costs more to unwind.
Get In Touch
Stop Guessing. Start Making Better Decisions.
Get clarity on your numbers, your structure, and your next move. Speak directly with our team and walk away knowing exactly where you stand.