Built for Australia, checked against official sources
Tax and pay calculators use the current ATO rates for 2026-27, and stamp duty uses the rates published by Revenue NSW, the Victorian State Revenue Office and the Queensland Revenue Office. Every calculator shows its formula, so you can check the maths yourself.
Which calculator do I need?
| Question | Calculator |
|---|---|
| What will I take home from my salary? | Pay after tax |
| How much income tax will I pay? | Income tax |
| How much stamp duty in NSW, VIC or QLD? | Stamp duty |
| How do I add or remove GST? | GST |
| What will my mortgage repayments be? | Mortgage repayment |
| What will a car or personal loan cost? | Loan |
| How much will my savings grow? | Compound interest |
| What is my salary per hour? | Salary to hourly |
| How do I work out a percentage? | Percentage |
| How many litres is my pool? | Pool volume |
| How big is my room in square metres? | Square metres |
| How much concrete for a slab or footing? | Concrete |
| How much paint for a room? | Paint |
| How many tiles do I need? | Tiles |
| How many decking boards and joists? | Decking |
| How many tonnes of gravel or road base? | Gravel |
| Will solar panels pay for themselves? | Solar panels |
| What does an appliance cost to run? | Electricity cost |
| What will a road trip cost in fuel? | Fuel cost |