Tax Refund Guide: How Tax Returns Work in Australia

What Is a Tax Refund?

A tax refund is the amount the Australian Taxation Office (ATO) returns to you when your employer withheld more PAYG tax than your actual liability for the financial year. The ATO calculates your refund after you lodge your tax return, comparing total tax withheld against your assessed tax on taxable income.

Throughout each pay cycle, your employer deducts income tax based on PAYG withholding schedules. These schedules assume you earn the same amount every pay period for the full 12 months. Three common situations create a gap between tax withheld and tax owed: claiming work-related deductions that reduce taxable income, working for only part of the financial year, and receiving tax offsets such as the "Low Income Tax Offset" (LITO) worth up to $700.

The refund is your own income that was over-withheld, not a payment from the government. Use our Tax Return Estimator to calculate whether you are likely to receive a refund or owe additional tax for FY2025-26.

How Is Your Tax Refund Calculated?

Your tax refund equals the difference between total PAYG tax withheld and your assessed tax liability. The ATO applies Australian income tax brackets, the Medicare levy, tax offsets, and allowable deductions to arrive at the final figure.

The ATO first determines gross income from all sources: salary, wages, interest, dividends, rental income, and capital gains. Allowable deductions are then subtracted from gross income to produce taxable income. Income tax is calculated on taxable income using the FY2025-26 resident tax brackets.

Worked Example at $85,000 (FY2025-26 return)

An employee earning $85,000 gross salary with $2,500 in work-related deductions has a taxable income of $82,500. The income tax on $82,500 is $15,538 (calculated as $4,288 base + 30% on the amount over $45,000). The Medicare levy adds $1,650 (2% of $82,500). After applying the LITO of $0 (phased out above $66,667), total tax liability is $17,188.

PAYG withholding on $85,000 with no deductions is designed to come close to the full-year tax on $85,000: about $17,988. If that is what was withheld, the refund is $17,988 minus $17,188 = $800: the $2,500 of deductions at the 30% marginal rate plus the 2% Medicare levy. The exact amount withheld depends on how each pay was rounded under the withholding tables, so a real refund will differ slightly. Use our Income Tax Calculator to model your own scenario with specific income and deduction amounts.

Tax Refund Formula

How Big Is a Typical Tax Refund in Australia?

There is no single typical refund. For most employees the refund is roughly their deductions multiplied by their marginal rate (plus the Medicare levy), plus any offset such as LITO that the withholding tables did not fully build in, plus any over-withholding from part-year work. Averages quoted in the media are early-season snapshots and move week to week, so we don't repeat them here.

Taxpayers in higher income tax brackets tend to receive larger refunds in dollar terms because deductions save tax at a higher marginal rate. For FY2025-26, a $3,000 deduction saves $480 in income tax for someone in the 16% bracket but $1,350 for someone in the 45% bracket. Part-year workers can get a refund even with no deductions, because withholding on each pay assumes you earn that amount for the full year.

What $1,000 of Deductions Is Worth by Bracket (FY2025-26)

Individuals below the $18,200 tax-free threshold who had PAYG tax withheld receive a full refund of all tax paid. This commonly applies to students, part-time workers, and people who started employment partway through the year. Review the current Tax Brackets Guide to identify which marginal rate applies to your taxable income.

What Are the Top Tax Deductions That Increase Your Refund?

Work-related deductions are the primary driver of tax refunds for Australian employees, reducing taxable income and the tax owed on it. The ATO allows deductions for expenses directly related to earning your assessable income, provided you have records such as receipts, invoices, or diary entries.

Claims without receipts are limited to $300 total for work-related expenses under the no-receipt threshold. The ATO uses data matching to compare your claims against others in the same occupation and income bracket. Unusually high claims relative to peers trigger review. Salary sacrifice arrangements are a separate way to reduce taxable income. See our Salary Sacrifice Calculator for details.

How Do You Lodge Your Tax Return?

You can lodge your own tax return through myTax, the ATO's free online tool accessible via myGov. For a straightforward return with pre-filled employer data and no complex investments, it is usually a short job.

1. Log into myGov at my.gov.au and navigate to the ATO section. Link your ATO account if you have not done so previously.
2. Wait for pre-fill data. Your employer's income statement, bank interest, private health insurance details, and government payments auto-populate when the pre-fill data arrives. The ATO says most information is pre-filled by late July. Lodging before pre-fill data is available increases the risk of errors.
3. Verify your income. Check that your salary, wages, allowances, and other income match your final payslip and payment summaries. Report all assessable income including interest above $1, dividends, rental income, and capital gains.
4. Add deductions. Enter work-related expenses, self-education costs, donations, and other allowable deductions. The ATO pre-fills some deductions such as income protection insurance and tax agent fees from the prior year.
5. Review offsets and levies. myTax automatically applies the "Low Income Tax Offset" (LITO), the "Medicare Levy" at 2%, and the "Medicare Levy Surcharge" if applicable. Confirm your private health insurance status to avoid an incorrect MLS charge. TheMLS calculator shows whether it applies to you.
6. Submit and receive your Notice of Assessment. The ATO issues a Notice of Assessment confirming your refund amount or tax debt. The ATO says most myTax returns process in 12 business days and most refunds issue within 2 weeks, paid by direct deposit.

Alternatively, a registered tax agent can lodge on your behalf. If you are on an agent's lodgment program (contact them before 31 October 2026), most individuals have until 15 May 2027. Complex returns involving investment properties, capital gains, foreign income, or business income benefit from professional preparation.

Key Deadlines for the FY2025-26 Return

Late lodgment can attract a "Failure to Lodge" (FTL) penalty of one penalty unit ($364 from 1 July 2026) for every 28 days or part overdue, up to 5 units ($1,820). The ATO can remit the penalty depending on your circumstances, so contact it if you will be late. Work out yours with the late tax return penalty calculator, and check our Tax Calendar for a complete schedule of Australian tax dates.

How Long Does a Tax Refund Take?

The ATO says most returns lodged online through myTax process in 12 business days, with most refunds issued within 2 weeks. For paper returns, most refunds issue within 50 business days. The ATO deposits refunds directly into the bank account linked to your tax file number (TFN).

Processing times increase during peak lodgment season in July and August. Returns flagged for review (due to unusual deductions, data mismatches, or random audits) take longer. The ATO contacts you via myGov messages if additional information is required.

Processing Time by Lodgment Method

Track your refund status by logging into myGov and checking the "Tax" section. The progress tracker shows four stages: received, processing, finalised, and paid. Outstanding debts to Centrelink, child support, or prior ATO balances are automatically offset against your refund before payment.

What Is the Difference Between a Tax Refund and a Tax Debt?

A tax refund occurs when your employer withheld more tax than your assessed liability; a tax debt occurs when the total tax withheld is less than your assessed liability. The ATO's Notice of Assessment confirms which outcome applies.

Tax debts arise from three primary causes: holding multiple jobs where each employer applies the tax-free threshold separately, earning untaxed investment income such as rental profits or capital gains, and incorrectly completing your TFN declaration (claiming the tax-free threshold at more than one employer). When the threshold is claimed at both jobs, the second employer withholds as if the first $18,200 of that job's pay were tax-free, even though your main job has already used it. The shortfall shows up as a debt at lodgment. Our Second Job Tax Calculator shows the effect on your own figures.

The ATO charges interest on overdue tax debts at the "General Interest Charge" (GIC) rate: 11.51% per annum for October–December 2026, compounding daily and reset every quarter. Payment plans are available for debts you cannot pay in full.

Avoid unexpected debts by reviewing your PAYG withholding throughout the year. Use our Take-Home Pay Calculator to verify your employer is withholding the correct amount based on your current salary and tax circumstances.

What Are the Most Common Tax Refund Mistakes?

The most common tax return error is claiming deductions without adequate records, which leads to ATO adjustments, penalties, and reduced refunds.

• Claiming personal expenses as work-related. Home-to-work commuting, conventional clothing, and personal phone usage are not deductible.
• Forgetting to declare all income sources. Bank interest, dividends, Centrelink payments, foreign income, and gig economy earnings are all assessable. The ATO data-matches income from banks, share registries, government agencies, and ride-share platforms.
• Double-claiming the tax-free threshold. Employees with 2 or more jobs sometimes claim the $18,200 tax-free threshold at each employer. This results in under-withholding and a tax debt at lodgment.
• Lodging before pre-fill data is ready. Submitting your return before employers finalise income statements (due by 14 July) increases the risk of reporting incorrect income figures, and fixing it later means lodging an amendment.
• Overlooking eligible offsets and rebates. The "Low Income Tax Offset", the "Seniors and Pensioners Tax Offset" (SAPTO), and the "Zone Tax Offset" are automatically applied in myTax but require accurate personal details. Incorrect information causes the ATO to omit applicable offsets. Review the Low Income Tax Offset Guide to confirm your eligibility.

What Changed for Tax Refunds in FY2025-26?

The FY2025-26 financial year retains the Stage 3 tax cuts introduced on 1 July 2024, keeping the 30% marginal rate for incomes between $45,001 and $135,000. No new changes to individual income tax brackets apply for the 2025-26 year. The next change applies to the 2026-27 return you lodge from July 2027: the 16% rate fell to 15% from 1 July 2026 (see tax brackets).

Two changes matter more for most 2025-26 refunds. Compulsory study loan repayments now apply only once repayment income exceeds $67,000, and only on the income above it. And the Medicare levy surcharge for singles without hospital cover starts above $101,000 for 2025-26. The superannuation guarantee rate increased from 11.5% to 12% on 1 July 2025. The higher SG rate affects employees who salary sacrifice into super: a higher compulsory SG contribution reduces the remaining cap space for voluntary concessional contributions. See our Superannuation Guide for the full breakdown of SG rates, caps, and employer obligations.

The ATO receives third-party transaction data from cryptocurrency exchanges, ride-share platforms, short-term rental platforms (Airbnb, Stayz), and the sharing economy reporting regime. Unreported income from these sources is increasingly detected during return processing.

Related Resources

The tools and guides below cover each part of your tax return in more detail: income tax and PAYG withholding, tax offsets, the Medicare levy and surcharge, HECS-HELP repayments, salary sacrifice and superannuation.

• Tax Return Estimator: calculate your expected refund or tax debt based on income, deductions, and PAYG withheld.
• Income Tax Calculator: compute income tax, Medicare levy, and take-home pay at any salary level for FY2026-27.
• Tax Brackets Guide: view all Australian income tax brackets with marginal rates, base amounts, and worked examples.
• Salary Sacrifice Calculator: work out how salary sacrificing into super lowers your taxable income. The sacrificed amount is not subject to PAYG withholding, so the saving shows up in each pay, not as a bigger refund.
• HECS-HELP Guide: understand how HECS-HELP repayments are calculated and how they affect your tax return and take-home pay.
• Superannuation Guide: review employer SG rate obligations, contribution caps, and the impact of super on your overall tax position.
• Low Income Tax Offset Guide: check whether LITO applies to your income and how it reduces your assessed tax liability.
• Medicare Levy Surcharge Calculator: check whether the surcharge applies to you and what hospital cover would save.
• Medicare Levy Guide: learn about the 2% Medicare levy, the surcharge thresholds, and exemptions for low-income earners.

Frequently Asked Questions