Tax Calculators — Australia
Calculate your tax obligations using current 2025-26 ATO rates — from income tax and PAYG to capital gains and HECS repayments.
Income & PAYG
Income Tax Calculator
Calculate Australian income tax for 2025-26 with marginal rates, Medicare levy, and LITO offset.
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PAYG Withholding Calculator
Calculate PAYG withholding on salary and contractor payments using 2025-26 ATO tax tables.
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HECS/HELP Repayment Calculator
Calculate your HECS-HELP repayment based on 2025-26 ATO income thresholds and years to repay.
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Medicare Levy Surcharge Calculator
Check if you owe the Medicare Levy Surcharge and whether private hospital cover would save you money.
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Business & ABN
ABN Tax Calculator
Calculate income tax for ABN holders and sole traders, including Medicare levy, GST, and PAYG.
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ABN Expenses Calculator
Calculate deductible business expenses for ABN holders -- home office, vehicle, phone, and more.
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GST Calculator
Add or remove 10% GST from any Australian price. Calculate GST-inclusive and exclusive amounts.
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ATO Home Office Calculator
Calculate your ATO home office deduction using the 67c/hr fixed rate for 2025-26.
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ATO Penalty Calculator
Calculate ATO GIC interest and failure-to-lodge penalties for overdue tax with remission guidance.
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Assets & Other
Capital Gains Tax Calculator
Calculate CGT on investments including the 50% discount for assets held 12+ months.
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Crypto Tax Calculator
Calculate CGT on crypto using ATO rules -- Bitcoin, Ethereum, NFTs, staking, and mining income.
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Car Stamp Duty Calculator
Calculate motor vehicle stamp duty for all 8 states and territories, including EV exemptions.
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Car Tax Deduction Calculator
Compare ATO cents-per-km (88c/km) vs logbook method and see your car tax deduction saving.
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Death & Estate Calculator
Calculate estate administration costs -- probate fees, executor fees, CGT on inherited assets.
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About these calculators
Tax calculators use configured ATO-era tax brackets, levy thresholds, and Australian tax assumptions for planning. Tax outputs are estimates only and should be verified against the relevant tax authority and current rules.