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    GST Calculator

    Add GST to a price, or work out how much GST is inside a total, with the CGST and SGST split.

    What do you want to do?
    ₹
    GST rate
    %
    ResultUpdates as you type—Total including GST—GST amount—CGST—SGST / UTGST

    How your GST is worked out

    Add GST: amount × (1 + rate). Remove GST: total ÷ (1 + rate).

    1. 1

      Work out the GST

      ₹10,000.00 × 18%
      = ₹1,800.00

    2. 2

      Add it on

      ₹10,000.00 + ₹1,800.00
      = ₹11,800.00

    3. 3

      Split the GST

      CGST 9% = ₹900.00
      SGST 9% = ₹900.00

    Read more: the formulas, a worked example and current GST rates

    Add GST: total = amount × (1 + rate ÷ 100)
    Remove GST: amount = total ÷ (1 + rate ÷ 100)

    For a sale within one state, the GST is split equally between the central government (CGST) and the state (SGST), or the union territory (UTGST). For a sale from one state to another, the whole amount is charged as integrated GST (IGST).

    Worked example

    ₹10,000 plus 18% GST is ₹10,000 + ₹1,800 = ₹11,800. Within a state that's ₹900 CGST and ₹900 SGST. To take GST out of ₹11,800, divide by 1.18 to get back to ₹10,000. A common mistake is to take 18% of ₹11,800, which gives ₹2,124 instead of the correct ₹1,800.

    GST rates

    Since the GST reform of 22 September 2025, most goods and services fall into two main slabs, 5% and 18%. A 40% rate applies to luxury and "sin" goods such as tobacco, pan masala and high-end cars, and special rates of 3% (gold and jewellery) and 0.25% (rough diamonds) remain. Many essentials are exempt at 0%. Check the current rate for your product or service code (HSN/SAC).

    For general information. Rates and rules change; confirm with the GST portal or a tax professional for invoices and filings.