Add GST to a price or remove GST from a GST-inclusive price in seconds. This GST calculator uses the current GST 2.0 rates and shows the GST amount, the price before and after GST, and the CGST and SGST split for sales within a state or IGST for sales between states.
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Current GST rates
Since the GST 2.0 reform on 22 September 2025, most goods and services fall into two main rates, 5% and 18%, with 40% for luxury and sin goods. Special rates continue for a few items, such as 3% for gold, silver and jewellery and 0.25% for rough diamonds. Check the rate that applies to your exact product or service.
GST formulas
- Add GST: price with GST = amount × (1 + rate ÷ 100). For example, ₹1,000 + 18% = ₹1,180.
- Remove GST: GST included = amount × rate ÷ (100 + rate). For example, ₹1,180 includes ₹180 of 18% GST.
Frequently asked questions
What are CGST, SGST and IGST?
For a sale within one state, GST is split equally between the centre (CGST) and the state (SGST), so 18% GST is 9% CGST plus 9% SGST. For a sale between states, the full rate is charged as IGST.
How do I remove 18% GST from a price?
Divide the GST-inclusive price by 1.18 to get the price before GST. The difference is the GST. For ₹590, the price before GST is ₹500 and the GST is ₹90.
For general guidance only; rates vary by product and service. Related: Income tax calculator · Discount calculator