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Tools
Calculators for the sums every Kiwi owner does. Simple maths with the working shown, checked against the official rules.
- MoneyGST calculator NZAdd 15% GST to a price, or take it out of a GST-inclusive one. Shows the working, so you can check it on any invoice.Open the calculator
- PeoplePAYE and take-home pay calculatorTake-home pay after PAYE, the ACC levy, KiwiSaver and student loan, per week, fortnight, month or year, on 2026–27 rates.Open the calculator
- GrowMarkup vs margin calculatorTurn a cost into a price at the margin you want, or check a price you charge now, and see why a 50% markup isn't a 50% margin.Open the calculator
- GrowCharge-out rate calculatorWork out an hourly rate that covers your wage, your business costs, your unbilled hours and a profit buffer.Open the calculator
General information, not financial or tax advice. Each tool links to the official source it's built on.