Australian Tax Calculator 2025-26 & 2026-27

12 free Australian tax calculators for 2025-26 & 2026-27: GST, BAS, Tax, Refund, Rental, CGT, Depreciation, Mileage, WFH & Invoice.

Australian Tax Calculator 2025-26 & 2026-27: 12 free calculators in one popup. By Instant Receipts (instantreceipts.com.au) CALCULATORS INCLUDED: • GST Calculator: add or remove 10% GST using the 1/11th rule • BAS Calculator: work out G1, 1A and 1B for one BAS period • Sole Trader Tax: income tax, Medicare levy, HELP/HECS repayment, SBITO and take-home pay • Tax Refund Estimator: PAYG refund or bill estimate, with an optional estimate of the proposed 2026-27 $1,000 standard work deduction (subject to legislation) • Rental Income Tax: net rental income or loss, and the tax effect of negative gearing • Capital Gains Tax (CGT): cost base builder, prior capital losses, 50% discount for assets held over 12 months • Depreciation: ATO prime cost and diminishing value methods, with effective life presets • Mileage / KM: cents per km (88¢ for 2025-26, 2026-27 shown as an estimate), plus a logbook comparison • Work From Home: 70¢/hr fixed rate, plus an actual cost comparison • Donation Tax Saving: tax saving and net cost of donations to deductible gift recipients • Deduction Checklist: 17 common ATO deductions for quick reference • Invoice Generator: create an invoice, then print to PDF or download as CSV or Word-compatible HTML PRIVATE AND SIMPLE: No signup, no account, no tracking. Everything is calculated on your device and works offline. The extension asks for no browser permissions. IMPORTANT: These calculators give general estimates only and are not tax or financial advice. Rates and thresholds are based on published ATO figures, and some 2026-27 items (such as the $1,000 standard deduction, the 2026-27 mileage rate and proposed negative gearing changes) were not final when this version was released. Check ato.gov.au or speak to a registered tax agent before lodging. Need more? Receipt scanning, BAS prep and full-featured tools with logo upload, payment details and Excel export are available at https://instantreceipts.com.au/tools