GST Calculators Hub
Accurate, easy-to-use tools for all your New Zealand GST needs.
GST Calculator (Add/Remove)
The standard tool for everyday GST calculations. Switch between adding 15% GST or removing it from a total.
Open Calculator →Reverse GST Calculator
Quickly find the original net price before GST was added. Essential for verifying invoices and pricing.
Open Calculator →Late GST Penalty Calculator
Estimate interest and penalties for late IRD payments. Helps you plan and minimize exposure to UOMI.
Open Calculator →GST on Imports Calculator
Buying goods from overseas? Estimate the GST, Customs duties, and IETF fees before they arrive.
Open Calculator →GST Refund for Tourists
Visiting NZ? Calculate how much GST you can claim back on high-value items when leaving the country.
Open Calculator →Business vs Personal Use
Calculate the correct GST apportionment for assets used both for business and private purposes.
Open Calculator →GST Invoice Generator
Generate professional, IRD-compliant GST invoices instantly. Choose from 50+ industry templates.
Open Generator →PAYE Tax Calculator
Calculate your New Zealand PAYE income tax from your gross salary or hourly wage.
Open Calculator →Salary/Wage Tax Calculator
Calculate your take-home pay, including PAYE, ACC, KiwiSaver, and Student Loan deductions.
Open Calculator →