LEGAL CENTRE · Free Business Tool
Smart GST calculator.
Enter the amount and GST rate. The calculator updates instantly, works with GST-inclusive or GST-exclusive prices, and can automatically choose CGST + SGST/UTGST or IGST from the supplier state and place of supply.
Live calculationAutomatic tax splitGSTIN state detectionNo login required
Calculation details
Auto calculate ONIf a valid GST state code is detected, Supplier State below is selected automatically.
For many ordinary registered B2B cases the recipient GSTIN state is useful, but place-of-supply rules can differ by transaction. Verify where special rules apply.
Select supplier state and place of supply. Tax mode will be selected automatically.
The applicable GST rate depends on the actual classification and tax treatment of the supply. Automatic CGST/SGST/UTGST versus IGST selection here uses the general same-State/different-State comparison and is not a substitute for transaction-specific place-of-supply analysis.
What happens automatically?
Inclusive price reverse calculation
If the entered amount already includes GST, the calculator automatically extracts the taxable value and tax component.
CGST + SGST/UTGST or IGST
In Auto mode, matching supplier and place-of-supply states use a split tax. Different states use IGST.
GSTIN state-code detection
Enter a GSTIN and the first two digits are used to select the corresponding state or Union Territory where the code is recognized.