As a business owner, staying on top of your tax obligations is essential, not just at tax time but throughout the financial year.

One of the key systems the ATO uses to help businesses manage their income tax is Pay As You Go (PAYG) instalments.

If your business earns income outside of salary and wages—such as business income, investment income, or trust distributions—PAYG instalments are likely to apply. Let’s take a look at how it works, what it means for you, and how to stay compliant.

What Is PAYG Instalment?

PAYG instalments are regular prepayments made towards your expected annual income tax liability. Rather than paying a lump sum when your tax return is lodged, PAYG helps you spread out your tax bill over the year, making it more manageable and improving cash flow planning.

The system applies to many businesses, including sole traders, partnerships, companies, and trusts. If you receive income that hasn’t had tax withheld—such as profits from business or investments—you may be required to pay instalments.

When Do You Start PAYG Instalments?

The ATO will typically notify you if you’re required to start PAYG instalments. This usually happens if:

• Your most recent tax return shows instalment income above the threshold ($4,000 or more),
• Your tax payable is over $1,000, and
• You are not entitled to a full refund of the PAYG withheld.
  

Once notified, you’ll be entered into the PAYG instalment system from the next quarter. However, you can also voluntarily enter the PAYG system—something many growing businesses choose to do to avoid a surprise tax bill later.

How Are Instalments Calculated?

There are two main ways your instalments can be calculated:

1. Instalment Amount – a fixed amount set by the ATO based on your previous tax return.
2. Instalment Rate – a percentage applied to your actual income for the quarter.
   

If you expect your income to be lower or higher than last year, you can choose the method that best reflects your situation. You also have the flexibility to vary your instalments if your circumstances change—but it’s important to estimate carefully, as underestimating could lead to interest charges.

What Should You Do Now?

If you’ve received a PAYG instalment notice, check your myGov or Online Services for Business account to view your obligations. If you haven’t been notified but expect to earn business or investment income this year, consider whether voluntarily opting in to PAYG instalments makes sense for your situation.

It’s also worth having a chat with your accountant to:

• Confirm your PAYG obligations
• Choose the best calculation method
• Review your cash flow so you’re ready for each instalment

PAYG instalments are designed to make managing tax easier for business owners. By spreading your tax payments over the year, you can reduce stress and avoid large, unexpected tax bills at the end of the financial year. If you’d like help working out your PAYG position or planning ahead for upcoming instalments, we’re here to support you every step of the way.