Split a price that already includes GST into value and tax
Estimates only, not financial advice. What you type stays on your device. Checked against sources on 5 Oct 2026.Most prices you see in shops and on quotes already include GST. Enter that inclusive price and pick the rate to see how much of it is the actual value of the goods and how much is tax, split into CGST and SGST for a sale within your state or shown as IGST for a sale to another state.
Rates and rules read from the sources listed on this page (the earliest on 5 Oct 2026); they may have changed since.
The page opens on Remove GST from a price, with 11,800 at 18% as an example.
Type the price including GST and pick the rate that was charged.
Choose Within one state or Between states to split the tax into CGST and SGST or IGST.
Read the Price before GST (taxable value) and the GST inside it, then press Copy breakdown.
Add more lines to break down a whole bill.
The GST calculator adds GST to a price or takes it out of a price that already includes it. For every item you get the taxable value, the GST, the total, and the split: CGST and SGST at half the rate each for a sale within one state or union territory, or IGST at the full rate for a sale to another state.
Sources (checked 5 Oct 2026): CBIC Notification No. 9/2025-Central Tax (Rate), in force 22 September 2025, and No. 19/2025-Central Tax (Rate), in force 1 February 2026; the PIB release on the 56th GST Council, 3 September 2025; the CGST, SGST and IGST Acts for the split between central and state tax.
The rest of the article, and all 7 questions about GST Calculator, are on the GST Calculator page.
Multiply the price before tax by the rate and divide by 100. At 18%, GST on ₹10,000 is ₹1,800 and the total is ₹11,800. Within one state that ₹1,800 is charged as ₹900 CGST and ₹900 SGST; on a sale to another state it is ₹1,800 IGST.
Divide the inclusive price by 100 plus the rate and multiply by 100. For ₹11,800 at 18%: 11,800 × 100 ÷ 118 = ₹10,000 of value and ₹1,800 of GST. Choose Remove GST, enter the inclusive price and the rate, and the page does this for every item.
When the seller and the place of supply are in the same state or union territory, the tax is split equally into central GST (CGST) and state GST (SGST). When they are in different states, the whole tax is integrated GST (IGST). The total tax is the same either way.
GST nikale: type the price and pick the rate. Add GST gives the tax and the total; Remove GST works backwards from an inclusive price as total x 100 / (100 + rate). Within one state the tax splits equally into CGST and SGST, and across states it is IGST. Choosing the correct rate for your goods is up to you.
Rates and rules change; check the source before you rely on a figure.
Still stuck? Ask about GST Calculator and anybody who knows can answer. No account needed.
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