GST Calculator
Add or remove GST at any rate.
1,000
Base amount
180
GST (18%)
1,180
Total
How to use the GST Calculator
- 1 Enter the amount.
- 2 Pick the GST rate (or type a custom one).
- 3 Choose whether the amount is exclusive or inclusive of GST to see the split.
Examples
- ▸ ₹1,000 + 18% GST = ₹1,180 (GST ₹180).
- ▸ Reverse: ₹1,180 inclusive = ₹1,000 base + ₹180 GST.
Frequently asked questions
How do I remove GST from a total?
Divide the gross amount by (1 + rate/100). For 18%, divide by 1.18 to get the base, then subtract to find the GST portion.
What are the common GST slabs?
In India the main GST slabs are 5%, 12%, 18% and 28%, with some goods at 0% or special rates. This tool supports any custom rate too.
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