How do I remove GST from a GST-inclusive price?

Divide the inclusive price by 1 plus the rate as a decimal. For ₹5,900 at 18%, the taxable value is 5,900 ÷ 1.18 = ₹5,000 and GST is ₹900.

When do I charge CGST and SGST instead of IGST?

Charge CGST and SGST when the supplier and the place of supply are in the same state. Charge IGST for inter-state supplies, imports and supplies to SEZs.

Is CGST always half of the GST rate?

Yes. For intra-state supplies the rate is split equally, so 18% GST is 9% CGST plus 9% SGST (or UTGST in union territories).

Which GST rates does this calculator support?

It has quick picks for 5%, 12%, 18% and 28%, and a custom field for any other rate, such as 3% or 0.25%.

Is this GST calculator free and private?

Yes. It is free, needs no sign-up, and all calculations run in your browser. Nothing you type is sent to our servers.

Can I use the result on a tax invoice?

You can use it to check numbers, but always confirm the correct rate for your HSN or SAC code and follow your accountant's advice for filing.

GST Calculator
CGST, SGST and IGST in seconds

Add GST to a price or take it out of a GST-inclusive amount. Free, instant and private.

Enter an amount, choose whether it is before or including GST, pick 5%, 12%, 18%, 28% or a custom rate, and choose same-state or other-state supply. The calculator shows the taxable value, the CGST and SGST halves or the IGST amount, and the total.

Amount (₹)

Amount is

GST rate

Type of supply

GST breakup

Enter an amount and pick a rate to see taxable value, CGST, SGST or IGST and the total.

GST guide

How GST is calculated

The GST formula

To add GST, multiply the taxable value by the rate: GST = amount × rate ÷ 100, and the total is amount + GST.

To remove GST from an inclusive price, divide by one plus the rate: taxable value = amount ÷ (1 + rate ÷ 100). The difference is the GST.

₹1,000 + 18% GST = ₹1,180
₹1,180 including 18% GST = ₹1,000 taxable value + ₹180 GST

CGST + SGST or IGST?

When the seller and buyer are in the same state, GST is split equally into Central GST (CGST) and State GST (SGST). At 18%, that is 9% CGST and 9% SGST.

When goods or services move between states, the full rate is charged as Integrated GST (IGST). The total tax is the same; only the split changes.

Common GST rates

Most goods and services fall into the 5%, 12%, 18% or 28% slabs, and some items such as gold use special rates. Rates are revised by the GST Council, so check the current rate for your HSN or SAC code before invoicing.

GST in your sales process

Sales teams quote GST-inclusive and GST-exclusive prices every day. SAS CRM keeps leads, quotations and follow-ups in one place so your team quotes the right price and closes faster.

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FAQs

Frequently Asked
Questions

Multiply the amount by the GST rate and divide by 100. For ₹5,000 at 18%, GST is ₹900 and the total is ₹5,900.

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