GST calculator with the new 2025 rates

How to use this tool

1. Pick the bill date and supply The date shows the right rates: GST 2.0 rates from 22 September 2025, old rates before that. Choose same state, other state or union territory.
2. Choose the GST rate Tap 0%, 5%, 18% or 40%, a special rate like 3%, or type another rate.
3. Enter the amount Add GST to a price before tax, or Remove GST from a price that already includes it.
4. Read the split See taxable value, GST, total and the CGST + SGST or IGST split, with the amount in words. Copy the result in one tap.
5. Use cart or margin mode Several items adds up a bill with different rates. Price with margin turns your cost and margin into a selling price with GST.

Rates (GST 2.0)

• Main rates from 22 September 2025: 0%, 5%, 18% and 40%.
• Special rates still apply to some goods (for example 3% and 0.25%).
• For bills dated before 22 September 2025, the old 12% and 28% rates may apply; set the bill date.

Which tax applies

• Same state: CGST + SGST, each half of the rate.
• Different states: IGST at the full rate.
• Union territories without a legislature: CGST + UTGST.

Check before you bill

• Find your exact rate by HSN/SAC code on the CBIC or GST portal.
• This calculator helps with maths; it is not tax advice.
• Use the Invoice Generator to make a full GST invoice.

Questions about this tool

How do I remove GST from a price?

Amount before GST = price × 100 ÷ (100 + rate). For ₹1,180 at 18%, that is ₹1,000, and GST is ₹180.

What are the GST rates now?

From 22 September 2025 the main rates are 0%, 5%, 18% and 40%, with a few special rates such as 3%.

When is IGST charged?

When the seller and the place of supply are in different states. Inside one state, CGST and SGST are charged.

Why do some calculators still show 12% and 28%?

Those were the old slabs. Pages that were not updated still show them. Use the bill date here to switch.

Is my data saved?

No. All calculations run in your browser.