GST calculator - inclusive and exclusive
To remove GST from a price that includes it, divide by (1 + rate ÷ 100): ₹1,180 at 18% is ₹1,000 + ₹180 GST. To add GST, multiply by (1 + rate ÷ 100). Within your state the GST is split equally into CGST and SGST; for another state it is all IGST.
- Price before GST
- ₹1,000
- GST (18%)
- ₹180
- Total with GST
- ₹1,180
- Same state: CGST + SGST
- ₹90 + ₹90
- Other state: IGST
- ₹180
Works in your browser. Nothing you type is sent or saved.
How to use it
- Choose whether your price already includes GST.
- Type the amount and pick the GST rate.
- Read the price before GST, the GST and the total, with the CGST/SGST and IGST split.
Common questions
Read every answer
- How do I calculate GST from an inclusive price?
- GST = price − price × 100 ÷ (100 + rate). For ₹1,180 at 18%: 1,180 × 100 ÷ 118 = ₹1,000, so GST is ₹180.
- When is it CGST + SGST and when IGST?
- Sale to a buyer in the same state: half CGST, half SGST. Sale to another state: the full amount as IGST.
- Which GST rate should I use?
- It depends on the product's HSN code. Most common rates are 5% and 18%; check the latest rate for your HSN with your accountant.
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