CalcVerse

GST Calculator (India)

India’s Goods and Services Tax is split into CGST and SGST (equal halves) for sales within a state, or charged as IGST for sales between states. Since 22 September 2025 the main slabs are 5% and 18%, with 40% for specified luxury and sin goods.

  • Last updated
  • Formula tested against reference values
  • Applies to: India

Your numbers

The amount is
Type of supply

Result

Total including GST
—

Calculating…

GST amount
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Price before GST
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CGST
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SGST / UTGST
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IGST
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How to use this calculator

  1. Enter or choose amount.
  2. Enter or choose the amount is.
  3. Enter or choose gST rate.
  4. Enter or choose type of supply.
  5. The total including GST updates as you type. Use Copy result or Share to keep it.

Formula

GST=Net×Rate100 or Net=Gross1+Rate100

Adding GST: GST = Net × Rate ÷ 100. Removing GST: Net = Gross ÷ (1 + Rate ÷ 100), GST = Gross − Net

Net
value of supply before tax
Gross
GST-inclusive amount
Rate
applicable GST rate (%)

Worked example

  1. The price ₹1,180 includes 18% GST.
  2. Net = 1,180 ÷ 1.18 = ₹1,000.
  3. GST = 1,180 − 1,000 = ₹180.
  4. Within one state this is ₹90 CGST + ₹90 SGST; between states it is ₹180 IGST.

A ₹1,180 GST-inclusive price is ₹1,000 plus ₹180 GST.

What the result means

To remove GST, divide by 1 plus the rate; do not just subtract 18% of the inclusive price (1,180 × 18% = 212.40, which is wrong). The applicable rate depends on the HSN or SAC classification of the item or service.

Assumptions and limits

  • Rate options reflect the GST rate structure in force from 22 September 2025 (GST Council, 56th meeting). Rates for tobacco and some items changed on different dates.
  • Compensation cess, where still applicable, is not included.
  • This calculator does not determine which rate applies to a product. Check the official rate notification for its HSN/SAC code.
  • Input tax credit, reverse charge and composition scheme calculations are not covered.
Jurisdiction
India
Rates effective from
22 September 2025
Authority
GST Council / CBIC
Rates last checked
29 October 2026

Questions

What are the current GST rates in India?

From 22 September 2025 the main rates are 5% and 18%, plus 40% for specified goods such as certain luxury cars and aerated drinks. Special rates include 3% for gold and jewellery and 0.25% for rough diamonds. Many essentials are exempt.

When is CGST + SGST charged instead of IGST?

CGST and SGST apply when the supplier and the place of supply are in the same state or union territory. IGST applies to inter-state supplies and imports.

How do I calculate GST backwards from an inclusive price?

Divide the inclusive amount by (1 + rate ÷ 100) to get the net price, then subtract. For 18%: net = amount ÷ 1.18.

Sources

Please note: Tax rules change and depend on how a supply is classified. Use this as a guide and confirm with the official notifications or a tax professional.