GST Calculator
Calculate GST inclusive and exclusive amounts for any tax slab.
Frequently Asked Questions
How do I calculate GST on an amount?+
To add GST, multiply the base amount by (1 + GST rate ÷ 100). For example, ₹1,000 at 18% GST becomes ₹1,000 × 1.18 = ₹1,180, of which ₹180 is GST. This calculator does it instantly and also splits the GST into CGST and SGST.
How do I remove GST from a total (reverse GST)?+
Divide the gross amount by (1 + GST rate ÷ 100). For ₹1,180 at 18%, the base is ₹1,180 ÷ 1.18 = ₹1,000 and the GST portion is ₹180. Select 'Remove GST' mode to do this automatically.
What is the difference between CGST and SGST?+
For intra-state sales, GST is split equally into CGST (collected by the central government) and SGST (collected by the state). So 18% GST is 9% CGST + 9% SGST. This tool shows the split automatically.
What are the common GST slabs in India?+
The main GST rates are 5%, 12%, 18% and 28%, with 0% for exempt goods. You can enter any custom rate in this calculator as well.
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