What is the formula to calculate GST amount if I have the total invoice value including GST?
If you have total invoice value including GST then you can use GST type as Taxinclusive. Available in all invoice type GST type as taxinclusive.
Formula for calculation:- GST Amount = GST Inclusive Price * GST Rate /(100 + GST Rate Percentage) Original Cost = GST Inclusive Price * 100/(100 + GST Rate Percentage)