GST Inclusive/Exclusive Calculator India

Add or extract GST from an amount using an editable GST rate for India.

Add or extract GST

Choose whether the entered amount excludes or already includes GST, then enter the applicable rate.

Amount type

Amount

GST rate (%)Enter the rate applicable to your supply. The tool does not classify goods or services.

Taxable / base amount—

GST amount—

GST-inclusive total—

How the calculation works

For a GST-exclusive amount, GST = base amount × GST rate and total = base + GST. For a GST-inclusive amount, base = inclusive total ÷ (1 + GST rate), and GST is the difference between the inclusive total and base.

How to use the result

Use this tool for invoice checks, price comparisons and extracting the tax component from a tax-inclusive figure. Enter the rate that applies to the specific supply instead of assuming the example rate applies universally.

Assumptions and limitations

GST rates, exemptions, place-of-supply rules, composition treatment, input tax credit and invoicing requirements depend on the transaction and can change. This calculator performs arithmetic only and does not determine the correct classification or tax position.

Example

At an 18% rate, ₹10,000 excluding GST produces ₹1,800 GST and an inclusive total of ₹11,800.

Frequently asked questions

Does this choose the correct GST rate for me?

No. Enter the applicable rate after verifying the classification and tax treatment of the supply.

How do I extract GST from an inclusive price?

Select amount including GST. The tool divides the total by one plus the entered GST rate to find the base amount.

Does this split CGST, SGST or IGST?

No. It calculates the total GST component only; the legal split depends on the transaction.

Is this a tax filing tool?

No. It is an arithmetic calculator for planning and invoice checks.