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GST calculator — add or remove GST

Add GST to a net price or extract GST from a GST-inclusive price at 0%, 3%, 5%, 12%, 18% or 28%.

Calculations run in your browser. Nothing you enter is sent to ToolsNest servers or stored.

How to use the GST Calculator

  1. 1Choose Add or Remove GST.
  2. 2Enter the amount.
  3. 3Pick the rate.

Supported formats and limits

  • Remove GST: net = gross ÷ (1 + rate).
  • CGST/SGST split shown for intra-state supplies; inter-state uses IGST at the full rate.

Common uses

  • Writing invoices.
  • Checking a shop bill.

Frequently asked questions

Are the rates up to date?

Rates change by government notification. Check the official GST rate for your item.

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