GST calculator

Enter a price, pick the GST rate and see the tax and the final amount, split into CGST and SGST or shown as IGST.

Since 22 September 2025 GST has two main rates, a merit rate of 5% and a standard rate of 18%, plus a special rate of 40% for a short list of goods and services.

How it's calculated

To add GST, multiply the price by the rate. The price with GST is the price plus that amount.
To remove GST from a price that already includes it, divide by 1 plus the rate. At 18%, divide by 1.18.
On a sale within the same state, GST is split in half: CGST goes to the centre and SGST (or UTGST in a union territory) to the state.
On a sale to another state, the whole amount is IGST.

An example

A bill of ₹10,000 at 18% carries ₹1,800 of GST: ₹900 CGST and ₹900 SGST. The customer pays ₹11,800.

If ₹10,500 already includes 5% GST, the price before tax is ₹10,000 and the GST is ₹500.

Frequently asked questions

Which rate applies to my product?

It depends on the goods or service and its HSN or SAC code. After the 2025 reform many everyday items moved to 5% and the standard rate is 18%. Check the rate notification for your code.

What happened to the 12% and 28% rates?

The GST Council replaced the four-rate structure with two main rates from 22 September 2025. Many items went down from 12% or 18% to 5%, and goods such as air conditioners and TVs went from 28% to 18%. A few went to the special 40% rate.

What goes into the 40% rate?

A short list, such as aerated and other sweetened drinks, pan masala and some tobacco products, and services such as casinos and race clubs.

Are some items exempt?

Yes. For example, individual life and health insurance policies are exempt, and UHT milk, paneer and Indian breads such as roti and paratha are at nil.

Key terms

CGST: Central GST, the half of the tax that goes to the central government on a sale within a state.
SGST: State GST, the half that goes to the state.
IGST: Integrated GST, charged on sales between states and on imports.