GST calculator
Add 10% GST to a price, or find the GST in a total.
Open the calculator
Free calculators
Quick answers for Australian small businesses
Everyday money and staff questions, set up for Australian tax, super and Fair Work rules. Free to use, nothing to sign up for, and nothing you type leaves your browser.
Money, pricing and tax
Cents per km calculator
Your car claim at 88c (2025–26) or 91c (2026–27) a km.
Open the calculatorHourly rate calculator
The minimum rate to charge to cover your pay, super and costs.
Open the calculatorMargin vs markup calculator
Set a price from your cost, and see why markup isn't margin.
Open the calculatorBreak-even calculator
How many sales a month cover your fixed costs.
Open the calculatorSubscription cost calculator
What all your subscriptions really cost a year.
Open the calculatorStaff, pay and super
Casual pay calculator
Check a casual pay, including weekends and super.
Open the calculatorSuper guarantee calculator
12% super on a pay, and when it must reach the fund.
Open the calculatorAnnual leave calculator
How much annual leave has built up, in hours and days.
Open the calculatorRates are checked every July. When you need more than a quick answer, each calculator links to a spreadsheet that does the job all year: see the shop.