Greenmor Gomore Tools

GST Calculator

Add or remove GST at any rate and see the breakup instantly. Built for Indian businesses.

Base amount
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CGST
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SGST
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Total GST
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Total amount

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About this tool

Quickly add or remove GST at any rate and see the full breakup, including the CGST and SGST split for same-state transactions or IGST for inter-state. Built for Indian businesses, freelancers and accountants.

How to use it

  1. 1 Enter the amount.
  2. 2 Choose the GST rate (5%, 12%, 18%, 28% or a custom rate).
  3. 3 Select whether the amount is exclusive (add GST) or inclusive (remove GST).
  4. 4 Read the base, tax and total — with CGST/SGST or IGST shown.

Frequently asked questions

What is the difference between CGST, SGST and IGST?

For sales within the same state, GST is split equally into CGST and SGST. For inter-state sales, the whole amount is charged as a single IGST.

How do I remove GST from an inclusive price?

Choose the “inclusive” option — the calculator works backwards to show the base amount and the GST already contained in the price.

Which GST rates can I use?

All standard slabs (0.25%, 3%, 5%, 12%, 18%, 28%) plus any custom rate you enter.

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