GST inclusive amounts:
Enter the GST inclusive amount on the left and click the calculate button.

Example:
Let's say you have an invoice for $1,200 and you want to know how much of that is GST. Enter $1,200 in the box on the left and click the calculate button. The GST amount willl display on the right.

GST exclusive amounts:
Enter the GST exclusive amount on the left and click the calculate button.

Example:
Let's say you need to invoice a client $370.50 and you want to know how much GST to add. Enter 370.50 in the box on the left and click the calculate button. The GST amount willl display on the right.

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