Singapore GST Calculator is the fastest and most straight forward sales tax app on the App Store. Simply enter your value in one of three boxes, and the other values are calculated as you key in the numbers. Singapore GST Calculator is useful in three specific cases: • 'Adding GST': When you know a price excluding GST, and you need to know how much GST will be added, and what the final value is including the GST. • 'Removing GST': When you know the final price including GST, and you need to know the GST component, and the amount before the GST was included. • 'Working backwards': When you only know the GST amount, and you need to know what the original price of the goods were, excluding and including GST. Why this app is so great: • Automatic Calculations • Results are calculated and displayed as you key in the numbers. • Copy and Paste • Starting values can be paste into any field, and results can be copied and pasted into other apps. • Quick Entry • The large number-pad is quick and easy. • Quick Reset • Tap the clear button in any of the boxes to reset the calculation. • Multi-purpose • Enter a value in any of the three input fields, and the other two fields will be calculated from that. • Universal App • It's a Universal app, meaning you only need to buy it once to be able to install it on all your devices (iPhone, iPod Touch, and iPad) • Up-to-date Tax Rates • The app will be updated with new tax rates when they change. These updates will be free after the initial purchase of the app.