Estimate your Australian income tax based on taxable income and the settings selected in the calculator, giving you a clearer view before tax time or a planning decision.


Australian resident individual tax is calculated using marginal tax rates, which means each rate applies only to the part of taxable income that falls within that bracket. For 2026–27, the tax-free threshold remains $18,200 and the first marginal rate above the threshold is 15%, followed by the 30%, 37% and 45% brackets at higher income levels.
Your final assessment can also be affected by the Medicare levy, tax offsets, residency, reportable income amounts, study and training support loan repayments and other circumstances. Use this calculator to estimate the core income tax position shown by the selected inputs, then check the assumptions before relying on the result for budgeting or lodgment.
Understand taxable income, marginal rates and the extra items that can change a final assessment.
Resident individuals have a $18,200 tax-free threshold. Taxable income from $18,201 to $45,000 is taxed at 15%, from $45,001 to $135,000 at 30%, from $135,001 to $190,000 at 37%, and amounts above $190,000 at 45%.
No. Australia uses marginal rates. Only the portion of taxable income within each bracket is taxed at that bracket’s rate, so moving into a higher bracket does not cause all of your income to be taxed at the higher rate.
Gross income is the income you receive before eligible deductions are taken into account. Taxable income is broadly assessable income less allowable deductions and is the figure generally used to calculate income tax.
That depends on the options and assumptions shown in the calculator. These amounts can require information beyond taxable income, so check the result breakdown to confirm exactly what has been included.
Not by itself. A refund or amount payable also depends on tax already withheld or paid during the year, offsets, levies, other liabilities and the final information reported in your tax return.
SMH Accountants & Advisors can review your income, deductions and tax position and help you prepare for the final lodgment outcome.