GST Calc NZ - Welcome to GSTcalc, the most popular Canadian GST calculator for the Newton MessagePad. Actually, this is a version for New Zealand. HereÍs an undocumented feature - you can drag GSTcalc by itÍs title! GSTcalc calculates on rounded numbers, which is the right way to calculate taxes (if you donÍt do this, you will end up with a 1 cent difference.). Contact the author if you want him to produce a GST calculator for your area!