PAYG Instalment Set-Aside Planner Australia

Plan how much to save each month or quarter for your PAYG instalment obligations in Australia. Enter your annual business income, expenses, and the ATO instalment rate from your BAS or ATO notice to calculate the estimated annual instalment amount and the monthly or weekly set-aside target. This planner helps sole traders, freelancers, and small business owners in Australia avoid cash flow surprises when PAYG instalments come due.

Ad Space

Understanding PAYG Instalments for Australian Businesses

Pay As You Go (PAYG) instalments are regular prepayments of the expected income tax on your business and investment income. If you are a sole trader, freelancer, or small business owner in Australia, the ATO may require you to make PAYG instalments throughout the year, either quarterly or monthly, depending on the size of your business. The purpose of the PAYG instalment system is to help taxpayers spread their income tax liability over the year rather than facing a single large bill at tax time. This is similar to the PAYG withholding system for employees, where tax is taken from each pay, but for business income there is no employer to withhold the tax, so you must set aside and pay it yourself.

The ATO calculates your PAYG instalment amount using one of two methods. The instalment amount method sets a fixed dollar amount for each quarter based on your most recent tax assessment. The instalment rate method provides a percentage rate that you apply to your business income each quarter to calculate the instalment amount. The instalment rate is shown on your BAS (Business Activity Statement) or on a separate PAYG instalment notice from the ATO. For most sole traders and small businesses, the instalment rate method is more common as it automatically adjusts the instalment amount if your income varies from quarter to quarter. This planner uses the instalment rate method to help you estimate your annual instalment and the monthly or weekly amount you should set aside.

Setting aside the right amount each month is crucial for maintaining healthy cash flow. Many small business owners make the mistake of spending their revenue without reserving money for tax, leading to stress and potential penalties when the instalment is due. By calculating your expected PAYG instalment and dividing it into manageable monthly amounts, you can transfer a set amount into a separate savings account each month. This approach ensures the money is available when each quarterly or monthly instalment is due, and any interest earned on the savings is a small bonus. For businesses with variable income, it may be prudent to add a 10% to 20% buffer above the calculated amount to account for income fluctuations.

PAYG Instalment Set-Aside Formulas

Taxable Business Income: Annual Income − Annual Expenses

Annual Instalment Estimate: Taxable Income × Instalment Rate ÷ 100

Per Quarter: Annual Instalment ÷ 4

Per Month: Annual Instalment ÷ 12

Monthly Set-Aside: Annual Instalment ÷ 12

Weekly Set-Aside: Annual Instalment ÷ 52

Where:

  • Instalment Rate is provided by the ATO on your BAS or instalment notice (typically 5%–30%)
  • Taxable Income is your net business income after allowable deductions

Where to Find Your ATO Instalment Rate

Your PAYG instalment rate can be found on your most recent Business Activity Statement (BAS) or on a separate PAYG instalment notice from the ATO. You can also find it by logging into your myGov account linked to the ATO and checking your PAYG instalment details. The rate is expressed as a percentage and is calculated by the ATO based on your most recent tax return. If your income has changed significantly since your last tax return, you can vary the instalment rate by lodging an instalment variation, but you should be careful to ensure the varied rate is reasonable, as underestimating your rate can result in interest charges.

Tips for Managing PAYG Instalments

First, always set aside money as soon as you receive income, not at the end of the quarter. Discipline is key; transfer the calculated amount to a separate savings account with each invoice payment you receive. Second, keep track of your actual income throughout the year and compare it against your projections. If your income is higher than expected, increase your monthly set-aside. Third, consider varying your instalment rate if your business circumstances have changed significantly, such as a drop in income or a major increase in deductible expenses. Fourth, lodge your BAS on time to avoid penalties and interest. The due dates for quarterly PAYG instalments are typically the 28th day of the month following the end of each quarter, or the 28th of each month for monthly payers. Fifth, review your instalment rate each year after your tax return is assessed to ensure it remains appropriate for your current income level.

Example Calculation

Sole Trader: $120,000 Income, $30,000 Expenses, 15% Instalment Rate

  • Taxable Income = $120,000 − $30,000 = $90,000
  • Annual Instalment = $90,000 × 15% = $13,500
  • Per Quarter = $13,500 ÷ 4 = $3,375
  • Monthly Set-Aside = $13,500 ÷ 12 = $1,125
  • Weekly Set-Aside = $13,500 ÷ 52 = $259.62