GST Calculator
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For education and planning only. Your bank or lender’s actual figures can differ — fees, rounding, day-count conventions and local rules vary. Always confirm the final numbers with your provider before deciding.
A GST calculator adds or removes India's Goods and Services Tax from a price and splits it into CGST and SGST. Enter an amount and a GST rate to add tax on top, or tick the box to extract the tax already inside an inclusive price. Common Indian slabs are 5%, 12%, 18%, and 28%. The whole thing runs on your device — no data leaves your browser.
How to use it
- Enter the amount and choose the GST rate.
- Leave the box unticked to add GST on top of the amount.
- Tick 'amount already includes GST' to work backwards and pull the tax out.
Examples
- ₹1,000 + 18% GST → ₹1,180 (CGST ₹90 + SGST ₹90).
- ₹1,180 inclusive at 18% → net ₹1,000, GST ₹180.
Frequently asked questions
- How do I calculate GST-inclusive vs exclusive prices?
- For an exclusive price, multiply the amount by the rate and add it on: ₹1,000 × 18% = ₹180, total ₹1,180. For an inclusive price, divide by (100 + rate) and multiply by 100 to find the net: ₹1,180 × 100 ÷ 118 = ₹1,000. Tick the include-GST box to do this automatically.
- What are the GST slab rates in India?
- The main GST slabs are 5%, 12%, 18%, and 28%, with 0% for many essentials. The rate depends on the goods or service. This calculator lets you enter any rate so it works for every slab.
- What is CGST vs SGST vs IGST?
- For sales within a state, GST splits equally into CGST (central) and SGST (state) — so 18% is 9% + 9%. For sales between states, a single IGST applies at the full rate instead. This calculator shows the CGST/SGST split for within-state sales.
- How do I reverse-calculate GST from an MRP?
- An MRP is GST-inclusive. Tick 'amount already includes GST', enter the MRP and the rate, and the calculator extracts the base price and the tax portion.