Calculating GST
Work out the price including GST
If you want to add GST to the existing price of a product or service, you multiply the price by 0.1. The amount you get should be added to the price. If you want to know the total price, you simply multiply the original price by 1.1.
Exclude GST from total amount
To work out how much GST is included in a total price, divide the price by 11. If you want the total price before GST was added, divide by 1.1.
