📍 South Australia (SA) — Key Financial Data 2025
Average house price: $650,000 | Average weekly rent: $540/week
Stamp duty note: SA has no FHB stamp duty exemption for established homes. First Home Owner Grant of $15,000 for new homes.
Fuel average: 178–212c/L | Minimum wage: $24.10/hr
Income Tax Calculator for South Australia Residents — 2025
This calculator uses the same Australian-standard formulas as the national tool, with specific guidance for South Australia (SA) residents. Key SA-specific financial considerations are highlighted below.
South Australia Property Market — 2025 Overview
The South Australia property market in 2025 has an average house price of approximately $650,000 across the Adelaide metropolitan area, with regional SA properties typically trading at 20–40% below capital city prices. Average weekly rents in South Australia run approximately $540/week for houses, with units averaging 15–25% less.
South Australia Stamp Duty
SA has no FHB stamp duty exemption for established homes. First Home Owner Grant of $15,000 for new homes. Always verify current thresholds with the South Australia State Revenue Office or a licensed conveyancer before exchange.
Income Tax in South Australia
SA residents pay standard federal income tax. South Australia has no additional state income tax. The standard ATO federal income tax rates and thresholds apply to all SA residents.
GST in South Australia
Standard 10% GST applies across SA. Adelaide businesses typically lodge BAS quarterly.
South Australia Trade Rates (for hourly rate context)
| Trade | SA Rate (2025) |
|---|
| Paving | $78–$120/hr |
| Builder | $82–$132/hr |
| Electrician | $92–$140/hr |
Frequently Asked Questions
What is the tax-free threshold in Australia?
The tax-free threshold for Australian residents is $18,200 for 2025–26. With the Low Income Tax Offset (LITO), the effective tax-free threshold rises to approximately $21,884. Non-residents and Working Holiday Makers are taxed from the first dollar of income at 32.5% and 15% respectively.
When must I lodge my Australian tax return?
Most Australians must lodge by 31 October each year. If you use a registered tax agent, you typically get an extension to May or June of the following year. Even if your employer withheld exactly the right amount of tax, lodging is worthwhile if you have deductions to claim — you may receive a significant refund.
What is PAYG withholding?
Pay As You Go (PAYG) withholding is the tax your employer deducts from each pay and sends to the ATO on your behalf. When you lodge your annual tax return, the ATO compares your total PAYG withheld against your actual tax liability — the difference is your tax refund or additional tax owing.
What records should I keep for tax deductions?
Keep receipts and records for 5 years after lodgement. For vehicle claims using the logbook method, maintain your logbook for the full 12-week period. The ATO can audit returns and deny deductions without supporting evidence. Use the ATO's myDeductions app to capture records throughout the year.