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How to use GST Calculator

Enter the amount, choose a GST rate and select add or remove GST. The calculator shows the net price, GST amount with CGST/SGST split and gross total.

Frequently asked questions

How do I add GST to a price?

GST amount = price × rate%. The gross = price + GST. For ₹1,000 at 18% GST, tax is ₹180 and the total payable is ₹1,180.

How is GST removed from a gross amount?

Net price = gross / (1 + rate%). For ₹1,180 including 18% GST, the base price is ₹1,180 / 1.18 = ₹1,000 and the GST portion is ₹180.

What are CGST and SGST?

For intra-state sales, GST splits equally into Central GST and State GST. An 18% rate becomes 9% CGST plus 9% SGST, which this tool shows automatically.

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