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Reverse GST Calculator

Remove GST from a price

Add or remove GST at the new 5%, 18% and 40% rates, with the CGST, SGST and IGST split.

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GST rates from 22 September 2025

Under the GST 2.0 reform, most goods and services are taxed at 5% or 18%, with 40% for luxury and sin goods. The old 12% and 28% slabs were removed. Some items stay at 0%, and special rates remain, such as 3% on gold and jewellery.

Rates as of 22 September 2025. Source: GST Council decisions (56th meeting, September 2025) and CBIC rate notifications. Always check the rate for your specific goods or services (HSN/SAC code) on cbic-gst.gov.in.

How GST is calculated

  • Add GST: GST = price × rate ÷ 100. ₹1,000 at 18% → ₹180 GST, ₹1,180 total.
  • Remove GST: price before GST = total × 100 ÷ (100 + rate). ₹1,180 at 18% → ₹1,000.

Good to know

When is it CGST + SGST and when is it IGST?

For a sale within the same state, the GST is split equally into CGST (central) and SGST (state), or UTGST in union territories. For a sale to another state, the whole amount is IGST.

Can I calculate an invoice with different rates?

Yes. Choose Add more items, give each item its quantity, price and rate, and you'll get totals by rate.

Is this tax advice?

No. It's a calculator. The right rate depends on the exact goods or services and their classification, so check with CBIC or a tax professional.