Australian Calculators
Free, instant calculators with Australian-specific defaults. GST, electricity costs by state, stamp duty, superannuation, and more. No signup, no data stored.
Electricity & Energy
NSW Electricity Calculator
Ausgrid network rates, NSW-specific supply charges, solar feed-in tariffs for NSW.
Victoria Electricity Calculator
CitiPower/United Energy network rates, VIC time-of-use awareness, regulated FIT.
Queensland Electricity Calculator
Energex/Ergon network rates, SEQ rates, highest solar output per kW in Australia.
South Australia Electricity Calculator
SA Power Networks rates, highest grid prices in Australia, best solar irradiance.
Western Australia Electricity Calculator
Western Power (SWIS) rates, Perth and South West Interconnected Network.
Tasmania Electricity Calculator
TasNetworks rates, lowest electricity prices, highest FIT in Australia.
Telecom
Tax & Finance
GST Calculator
Add or remove 10% GST. Australian GST-exclusive and GST-inclusive price calculations.
National Electricity Calculator
Australian average electricity rates. Use when your network area is unknown.
EV Charging Calculator
Home vs public charger cost comparison for Australian EV owners. AC vs DC fast charging.
Coming Soon
Stamp Duty Calculator
NSW, VIC, QLD, SA and WA stamp duty rates and thresholds. Coming soon.
Superannuation Calculator
Estimate your super balance at retirement. Accumulation vs pension phase, AU super rates.
PAYG Tax Calculator
Australian PAYG income tax brackets by financial year. Calculate take-home pay.
About Australian Electricity Prices
Why are electricity prices different in each state?
Australia's electricity grid is broken into distinct network regions, each managed by a different company. Network costs (poles and wires) make up 40-50% of your bill and vary significantly by region due to differences in population density, terrain, and historical investment. Retail prices also vary as retailers compete differently in each market. The Australian Energy Regulator (AER) sets Default Market Offer (DMO) reference prices annually for each network area, which cap what retailers can charge on standing offers.
Which state has the cheapest electricity?
Tasmania has the cheapest controlled-load and standard residential electricity prices in Australia, driven largely by Hydro Tasmania's low-cost generation. However, Tasmania's lower solar irradiance means solar payback periods are longer. For grid users without solar, Tasmania typically has the lowest annual bills, followed by Victoria and Queensland. South Australia has the highest prices but also the highest solar production.
What is a feed-in tariff?
A feed-in tariff (FiT) is the rate you earn for each kilowatt-hour of solar energy you export back to the grid. Victoria has a regulated minimum FiT (around 5.2 cents/kWh as of 2025-26), while other states leave FiT rates to retailers, meaning they vary between about 5 and 10 cents/kWh. Tasmania has the highest regulated minimum at 8.8 cents/kWh. A higher FiT means faster solar payback, but self-consumption (using your solar generation directly rather than exporting it) is always worth more than the FiT rate.
How is solar output different by state?
A 6.6kW solar system in Adelaide produces approximately 25-30% more energy per year than the same system in Hobart, due to differences in sunshine hours and irradiance. Queensland and WA also have excellent solar conditions. These differences directly affect how quickly a solar system pays for itself. A 6.6kW system in SA might produce 4,800kWh/year versus 3,400kWh/year in TAS, making solar economically attractive even in lower-sun states when feed-in tariffs are high.