GST Calculator
GST (Goods and Services Tax) is charged on the supply of most goods and services in India. If you sell something, you add GST to your price. If you are given a price that already includes GST, you may need to work backwards to find the price without tax and the amount of tax in it.
GST Calculator
Example values are shown to start with. Change them to your own numbers. Everything is calculated in your browser.
This calculator does both. Enter an amount and a GST rate, then choose whether to add GST or remove it. It shows the total, the amount without GST, the GST amount, and the CGST and SGST halves used for supplies within a state.
Worked example
With the starting values below, the calculator gives the results in the second table.
| Amount | ₹1,000 |
|---|---|
| GST rate | 18% |
| Mode (1 = add GST, 2 = remove GST) | 1 |
| Total amount | ₹1,180.00 |
|---|---|
| Amount without GST | ₹1,000.00 |
| GST | ₹180.00 |
| CGST + SGST (each) | ₹90.00 |
How to use this calculator
- Enter the amount.
- Enter the GST rate that applies to your goods or service.
- In the mode box type 1 to add GST to the amount, or 2 to remove GST from an amount that already includes it.
- Read the total, the amount without GST, the GST and the CGST + SGST split.
Formula
- For a supply between two states, the whole GST amount is charged as IGST instead of being split into CGST and SGST.
Assumptions
- The rate you enter is the correct rate for the item. The calculator does not look up rates.
- The split into CGST and SGST is shown for intra-state supplies.
Limitations
- GST rates and classification are decided by the GST Council and notified by the government, and they can change. Check the current notification for your HSN or SAC code.
- Cess, reverse charge, composition scheme and input tax credit are not modelled.
Frequently asked questions
How do I calculate GST on a price?
Multiply the price by the GST rate and divide by 100 to get the GST. Add it to the price to get the total. For example, GST at 18% on 1,000 is 180, and the total is 1,180.
How do I remove GST from a GST-inclusive price?
Divide the total by (1 + rate ÷ 100). For a total of 1,180 at 18%, the price without GST is 1,000 and the GST is 180.
What are CGST, SGST and IGST?
For a sale within one state, GST is split equally between the Central government (CGST) and the State government (SGST). For a sale from one state to another, the whole amount is collected as IGST.
Which GST rate should I use?
Use the rate that applies to your goods or service under the current GST notifications. Check the GST portal or ask a tax professional if you are unsure.
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Sources and method
GST is a percentage of the taxable value, so the add and remove calculations are exact inverses. See how our calculators work.
Results are estimates for planning only and are not financial, tax or legal advice. Rates, rules and your own circumstances can change the outcome. Read our disclaimer.