Trust and calculation policy

Methodology

The calculators use published Australian rates and simple resident assumptions. Results are estimates only, not tax, payroll, legal or financial advice.

Last reviewed 10 June 2026 Official-source linked Estimate only

Official sources

Core formulas

  • Gross salary is annualised from the selected pay period: annual, monthly, fortnightly, weekly, daily or hourly.
  • If salary includes super, base salary = package / (1 + super rate). Employer super is displayed separately from take-home pay.
  • Income tax applies resident brackets and subtracts the Low Income Tax Offset where eligible.
  • Medicare levy is estimated as 2% of taxable income above the full low-income threshold, with a shade-in estimate between the lower and full threshold.
  • HELP/HECS uses the marginal repayment model: repayments start above the threshold and are capped at 10% of repayment income.
  • Salary sacrifice to super reduces taxable income, but the sacrificed amount is added back for the HELP repayment-income estimate.

Included assumptions

  • Australian resident individual rates only.
  • Single-person Medicare levy threshold estimate.
  • Standard Low Income Tax Offset estimate.
  • 2025-26 and 2026-27 resident tax-year selection.
  • Superannuation Guarantee default of 12%.
  • Work-hour conversion default of 38 hours per week and 52 paid weeks per year.

Excluded cases

  • Foreign resident, working holiday maker, under-18 and temporary resident rates.
  • Family Medicare levy, SAPTO, spouse and dependant calculations.
  • Medicare Levy Surcharge, private health insurance rebate and family thresholds.
  • Personal deductions, work-related expenses, business income, investments and capital gains.
  • Employer-specific payroll rules, tax-file-number declaration differences and payroll rounding.
  • Award classification, allowances and legal entitlements. Use Fair Work for those.

Privacy

Calculator inputs run in the browser. The static calculator does not need salary inputs to be sent to a server to produce results.

Do not use these estimates as a substitute for official ATO tools, payroll software, a registered tax agent, legal adviser or financial adviser.