Calculate GST both ways: add tax to a base price or work backwards from a price that already includes it, with the CGST and SGST split shown.
Add GST to a base price, or remove GST from a total that already includes it.
How to Use This GST Calculator
Enter the amount, pick the GST rate that applies to your goods or services and choose the calculation type. Use add GST when your price is before tax and you want the invoice total. Use remove GST when you have a final price and need the base value and tax inside it.
Which GST Rate Applies to You?
Most services fall at 18 percent. Goods vary widely: essentials at 5 percent, standard goods at 12 or 18 percent and luxury or sin goods at 28 percent. The correct rate depends on your HSN or SAC classification, and getting it wrong invites notices. If you are unsure, ask us on WhatsApp with your product details.
CGST, SGST and IGST
For sales within your state, the tax splits equally into CGST and SGST. For interstate sales, the entire amount is charged as IGST. The total tax is the same either way; only the split changes.