Extract the base price and GST amount from any GST-inclusive price instantly — completely free.
| Component | Rate | Amount |
|---|---|---|
| Base amount | — | ₹0.00 |
| CGST | 9% | ₹0.00 |
| SGST | 9% | ₹0.00 |
| Total | — | ₹0.00 |
Reverse GST calculation is the process of extracting the original base price and GST amount from a GST-inclusive final price, using the formula: Base Price = Inclusive Price × 100 ÷ (100 + GST Rate).
To remove GST from an inclusive price, use the formula: Base Price = GST Inclusive Price × 100 ÷ (100 + GST Rate). The GST amount is then the difference between the inclusive price and the base price.
Reverse GST calculation is needed for expense reporting, claiming input tax credit, verifying invoices, and separating base price from tax component for accounting and bookkeeping purposes.
Yes, the same formula applies for all GST rates — Base Price = Inclusive Price × 100 ÷ (100 + GST Rate). Only the GST rate value changes depending on the applicable slab (5%, 12%, 18%, or 28%).
For intra-state transactions, the extracted GST amount is split equally into CGST and SGST. For inter-state transactions, the full GST amount is IGST with no CGST or SGST component.