Pay As You Go (PAYG) withholding is the system by which Australian employers deduct income tax from employees’ wages before paying them. The employer sends the withheld amount to the ATO throughout the year. At the end of the financial year, your tax return reconciles the total withheld against your actual tax liability — producing either a refund or a bill.
How PAYG Withholding Works
You complete a Tax File Number Declaration — When you start a job, you give your employer a TFN declaration form. This tells the employer your tax file number, whether you are claiming the tax-free threshold, and your residency status. These details determine how much tax to withhold.
Your employer calculates the withholding — Using ATO withholding tables (or ATO-approved payroll software), the employer calculates the tax to deduct each pay cycle. The calculation annualises your earnings — it assumes you earn the same amount every pay period for the full year and applies the appropriate bracket rates.
Tax is deducted and paid to the ATO — The withheld amount is sent to the ATO, usually monthly or quarterly, depending on the employer’s size.
Your payslip shows the tax withheld — Each payslip shows gross pay, tax withheld, and net pay.
Your end-of-year tax return reconciles — When you lodge your return, the ATO compares the tax withheld against your actual tax liability (based on your total income and deductions). Refund if over-withheld; bill if under-withheld.
What Information Affects Your Withholding
Tax-free threshold claim
If you are an Australian resident and this is your main job, you can claim the tax-free threshold ($18,200). Claiming it means your employer withholds less tax each pay. You should only claim it from one employer — if you have multiple jobs, claim it only at the job where you earn the most.
If you do not claim the threshold, the employer will withhold tax at a higher (no-threshold) rate, but you will receive a refund when you lodge.
Tax file number
If you do not provide your TFN to your employer, they are required to withhold tax at the top rate (45% + Medicare levy), regardless of your actual income level. Always provide your TFN.
Study and training support loan (HECS/HELP)
If you have a HECS-HELP debt, you must notify your employer using the withholding variation form. The employer will then withhold an additional amount for your HECS repayment, based on the income-contingent repayment rates.
Medicare levy variation
If you are exempt from the Medicare levy (e.g., certain visa holders), you can complete a Medicare Levy Variation Declaration to reduce your withholding.
Reading Your PAYG Summary (Income Statement)
At the end of each financial year, your employer provides a payment summary — now called an income statement and lodged directly with the ATO. You access it via myGov/ATO online services, where it pre-fills into your tax return.
Your income statement shows:
- Total gross payments
- Total tax withheld
- Reportable employer super contributions (if you salary sacrificed)
- Reportable fringe benefits amount (if applicable)
Voluntary Withholding Variations
If your regular withholding is consistently producing a large refund or bill, you can ask your employer to vary the withholding amount. To reduce withholding (if you have significant deductions), lodge a PAYG withholding variation application with the ATO. If the ATO approves it, your employer withholds less. This means more money in your hands during the year but no large refund at the end.
Frequently Asked Questions
Why does my employer withhold different amounts each pay period? If your gross pay varies (due to overtime, commissions, or irregular hours), the withholding calculation changes because it annualises your income for that period. A higher-than-usual pay period will trigger higher withholding for that cycle.
Can I ask my employer to withhold more tax? Yes. You can request additional withholding by submitting a tax variation to your employer. Some people do this to avoid a tax bill if they have income from other sources (rental, investment) not subject to withholding.
What happens if my employer withholds too little? You will have a tax bill when you lodge. This is not a penalty — it is simply the difference between what was withheld and what you owe. In some cases, if the shortfall is significant, the ATO may require you to pay quarterly PAYG instalments in future years.
What is the difference between PAYG withholding and PAYG instalments? PAYG withholding is tax collected by employers from employees. PAYG instalments are quarterly pre-payments of income tax for self-employed people, investors, and businesses. See PAYG Instalments Explained for more.
Do I still need to lodge a tax return if tax was withheld? In most cases, yes — unless you meet the ATO’s non-lodgement criteria (e.g., income below the tax-free threshold with only one employer and no investment income). Even if a refund is unlikely, lodging ensures your tax position is correctly recorded.
This article provides general tax information. For advice tailored to your situation, speak with a registered tax agent or accountant. Find one through the Tax Practitioners Board register.