Reverse GST Calculator
Take the GST out of a price that already includes it.
Works in your browser. Nothing you type is sent to us.
5% and 18% are the main rates since 22 September 2025, 40% applies to a few luxury and sin goods; 12% and 28% are for older invoices and items still on them.
| Amount before GST | - |
|---|---|
| CGST | - |
| SGST / UTGST | - |
| IGST | - |
| Total GST | - |
| Amount with GST | - |
Worked out in your browser, rounded to the paisa. Nothing you type is sent to us. The rate for a product or service is set by its HSN or SAC code; check it before you invoice.
Reverse GST Calculator at a glance
- Price
- Free
- Data sent to us
- None, it runs in your browser
- Sign-up
- Not needed
- Main rates
- 5%, 18%, 40% (from 22 September 2025)
- Other rates
- 0.25%, 3%, 12%, 28% and any rate you type
- Source
- GST Council 56th meeting; CBIC Notification 9/2025-CT(R)
How to use Reverse GST Calculator
- Choose add or removeAdd GST to a price before tax, or Remove GST from a price that already includes it.
- Type the amount and pick the rateClick 5%, 18% or 40%, or type another rate.
- Read the splitChoose within a state for CGST and SGST or between states for IGST, then copy the breakdown.
Type a price that includes GST, such as an MRP, a quote marked inclusive or a bill total, pick the rate, and see the taxable value before GST and the GST inside it, split into CGST and SGST or shown as IGST. This is what you need to write a tax invoice from an inclusive price or to book a purchase in your accounts.
How it works
Reverse GST Calculator is a web page that does its work on your own device. Everything you type or choose is worked out by your browser and never sent to a server, so nothing is stored and there is nothing to delete. There is no account, no sign-up and no limit on how often you use it.
Why not just take 18% off?
Taking 18% off ₹11,800 gives ₹9,676, which is wrong: the GST was 18% of the price before tax, not of the total. Dividing by 1.18 gives the right ₹10,000.
Questions
Does MRP include GST?
Yes. In India the MRP printed on a packaged product includes all taxes, so remove GST from it to get the taxable value.
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