Understand inclusive and exclusive GST, plus the difference between CGST, SGST and IGST.
Exclusive GST is added to the base price. Inclusive GST is already contained in the displayed price and must be separated using the applicable rate.
Within a state, GST is usually split into CGST and SGST. Interstate supplies generally use IGST.
Use the rate that applies to the specific product or service and confirm the current official classification.