CGST • SGST • IGST

GST Calculator

Add or remove GST. Choose rate and intra-state (CGST+SGST) or inter-state (IGST).

GST details

Base amount if Add GST; total if Remove GST

Result

Base amount
GST amount
Total amount
CGST
SGST

GST rates (India)

Common rates: 5%, 12%, 18%, 28%. Intra-state: CGST + SGST (each half of GST). Inter-state: IGST (full GST). Add GST = base × rate; Remove GST = total ÷ (1 + rate/100).

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Frequently Asked Questions

What is the difference between CGST, SGST and IGST?

For intra-state supply (within same state): GST is split as CGST (Central) + SGST (State), each half of the GST rate. For inter-state supply: IGST (Integrated GST) is charged at full GST rate and goes to the Centre.

How do I add GST to a amount?

GST amount = Base amount × (GST rate ÷ 100). Total with GST = Base + GST amount. For example, 18% GST on ₹10,000 = ₹1,800 GST; total = ₹11,800.

How do I remove GST from total?

Base amount = Total ÷ (1 + rate/100). For example, if total is ₹11,800 and rate is 18%, base = 11800 ÷ 1.18 = ₹10,000. GST component = ₹1,800.

What are common GST rates in India?

Common rates are 5%, 12%, 18% and 28%. Some items are nil or exempt. Choose the rate that applies to your product or service.

Is this GST calculator free?

Yes. This GST calculator is free. Add or remove GST for any rate. Supports intra-state (CGST+SGST) and inter-state (IGST).