Question 1

How do you calculate GST?

Accepted Answer

GST amount = (Taxable Value × GST Rate) ÷ 100. For sales within the same state, this splits equally into CGST and SGST; for inter-state sales, the full amount applies as IGST.

Question 2

How do you find the base amount from a GST-inclusive price?

Accepted Answer

Base = Inclusive Price × 100 ÷ (100 + GST Rate). For example, ₹1,180 at 18% inclusive gives a base of ₹1,000 and GST of ₹180.

Question 3

What is the difference between CGST, SGST and IGST?

Accepted Answer

For supply within the same state, CGST (Central) and SGST (State) each apply at half the rate. For inter-state supply, the full tax applies as IGST. The total tax is the same either way.

GST Calculator