GST Calculator India
Quickly add GST to a price or remove GST from an inclusive amount. View the taxable value, total price and CGST, SGST or IGST breakdown.
Calculate GST
Enter an amount, choose a rate and select the supply type.
This calculator applies the rate you select. It does not classify goods or services or determine the legally applicable GST rate. Verify the rate and tax treatment for your transaction.
How to use this GST calculator
- Choose Add GST for a pre-tax amount or Remove GST for a GST-inclusive price.
- Enter the amount and select a GST percentage, or enter a custom rate.
- Select intra-state or inter-state to view the corresponding CGST/SGST or IGST calculation.
- Read the taxable value, GST amount and final or base price in the results panel.
GST calculation formulas
When adding GST to a pre-tax amount, tax is calculated on the taxable value:
Price including GST = Taxable value + GST amount
When removing GST from a price that already includes tax:
GST amount = Inclusive amount − Taxable value
CGST, SGST and IGST
For an intra-state supply, CGST and SGST or UTGST generally apply together; the calculator displays an equal split of the selected rate for a simple intra-state estimate. For an inter-state supply, the selected rate is shown as IGST. Actual tax treatment depends on the place and nature of supply and applicable law.
Frequently asked questions
How to use this GST calculator
- Choose Add GST for a pre-tax amount or Remove GST for a GST-inclusive price.
- Enter the amount and select a GST percentage, or enter a custom rate.
- Select intra-state or inter-state to view the corresponding CGST/SGST or IGST calculation.
- Read the taxable value, GST amount and final or base price in the results panel.
GST calculation formulas
When adding GST to a pre-tax amount, tax is calculated on the taxable value:
Price including GST = Taxable value + GST amount
When removing GST from a price that already includes tax:
GST amount = Inclusive amount − Taxable value
CGST, SGST and IGST
For an intra-state supply, CGST and SGST or UTGST generally apply together; the calculator displays an equal split of the selected rate for a simple intra-state estimate. For an inter-state supply, the selected rate is shown as IGST. Actual tax treatment depends on the place and nature of supply and applicable law.
Frequently asked questions
To add GST, multiply the taxable amount by the GST rate and divide by 100. Add the tax to the taxable amount to get the total price.
Divide the GST-inclusive amount by (100 + GST rate) and multiply by 100 to get the pre-tax value. Subtract that value from the inclusive amount to find the GST component.
For an intra-state supply, CGST and SGST or UTGST generally apply together. For an inter-state supply, IGST generally applies. Confirm the correct treatment for your transaction.
Yes. Choose Custom rate and enter the percentage applicable to your goods or services. The calculator does not determine the legally applicable rate for a product.
No. It calculates tax using the rate you provide. GST rates depend on the goods or services and applicable notifications. Verify the correct rate using official GST resources or a qualified tax professional.