GST Calculator
Enter a price and a GST rate to add GST or to take it out of a GST-inclusive price. The result shows the GST amount and how it splits into CGST, SGST or IGST.
Results
Price including GST
₹11,800.00
- GST amount
- ₹1,800.00
- Price before GST
- ₹10,000.00
- CGST
- ₹900.00
- SGST / UTGST
- ₹900.00
₹10,000.00 plus 18% GST is ₹11,800.00, of which GST is ₹1,800.00.
Price and GST
- Price before GST₹10,000 (84.7%)
- GST₹1,800 (15.3%)
Show the calculation steps
- GST = price before GST × rate = ₹10,000.00 × 18% = ₹1,800.00.
- Price including GST = ₹10,000.00 + ₹1,800.00 = ₹11,800.00.
- Within one state, GST splits equally: CGST ₹900.00 + SGST/UTGST ₹900.00.
- GST rates differ by goods and services and are revised by the GST Council. Enter the rate that applies to your item.
Adding and removing GST
To add GST, multiply the price by the rate and add the result. To remove it from a price that already includes GST, divide by (1 + rate). Do not just subtract the rate percentage: 18% of a GST-inclusive price is not the GST in it.
CGST, SGST and IGST
For a sale within one state, the GST is split equally between the Centre (CGST) and the state (SGST, or UTGST in a union territory). For a sale between states, the whole amount is collected as IGST.
Formula
GST = Price before GST × GST rate ÷ 100
Price including GST = Price before GST + GST
Price before GST = Price including GST ÷ (1 + GST rate ÷ 100)
Where:
- GST rate
- = The tax rate that applies to the goods or service
- CGST / SGST
- = Central and state halves of GST for supplies within a state
- IGST
- = GST for supplies between states
Example calculation
Add 18% GST to ₹10,000
Inputs
- Price Before GST
- ₹10,000
- GST Rate
- 18 %
- Calculation
- Add GST to a price
- Type of Supply
- Within the state (CGST + SGST)
Result
- Price including GST
- ₹11,800.00
- GST amount
- ₹1,800.00
- Price before GST
- ₹10,000.00
- CGST
- ₹900.00
- SGST / UTGST
- ₹900.00
Step-by-step
- GST = price before GST × rate = ₹10,000.00 × 18% = ₹1,800.00.
- Price including GST = ₹10,000.00 + ₹1,800.00 = ₹11,800.00.
- Within one state, GST splits equally: CGST ₹900.00 + SGST/UTGST ₹900.00.
Remove 18% GST from ₹11,800
Inputs
- Price Before GST
- ₹11,800
- GST Rate
- 18 %
- Calculation
- Remove GST from a price
- Type of Supply
- Between states (IGST)
Result
- Price including GST
- ₹11,800.00
- GST amount
- ₹1,800.00
- Price before GST
- ₹10,000.00
- IGST
- ₹1,800.00
Step-by-step
- Price before GST = price including GST ÷ (1 + rate) = ₹11,800.00 ÷ 1.18 = ₹10,000.00; GST = ₹11,800.00 − ₹10,000.00 = ₹1,800.00.
- Price including GST = ₹10,000.00 + ₹1,800.00 = ₹11,800.00.
- Between states, the whole ₹1,800.00 is IGST.
Important notes
- GST rates depend on the goods or service and are changed by the GST Council. Enter the rate that applies to your item.
Disclaimer: This calculator provides estimates for informational purposes and should not be considered financial advice. Actual figures from lenders, banks and investment products can differ because of fees, taxes, rounding rules and changing rates. Consult a qualified professional before making financial decisions.
Frequently asked questions
How do I calculate GST?
GST = price × rate ÷ 100. The final price is the price plus GST.
How do I remove GST from an inclusive price?
Divide the GST-inclusive price by (1 + rate ÷ 100) to get the price before GST; the difference is the GST.
When is IGST charged?
When the seller and the place of supply are in different states.
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