GST Shopping Calculator
Add or remove GST from a shopping bill to find the base price, GST amount, and total.
- Free to use
- Accurate results
- No registration required
- Works on all devices
Enter an amount and GST rate, then choose to add or remove GST, to calculate the base price, GST amount, and total.
₹
%
Common retail slabs are 5%, 12%, 18%, and 28% — check the rate for your specific item.Your result
₹1,180
Total (GST-inclusive)
Base amount (GST-exclusive)₹1,000
GST amount₹180
AI explanation
Formula
Add GST: total = amount × (1 + rate/100). Remove GST: base = amount ÷ (1 + rate/100)Worked example
₹1,000 + 18% GST
| Field | Value |
|---|---|
| Amount | 1000 |
| GST rate | 18 |
| Calculation type | exclusive |
| Base amount (GST-exclusive) | 1000 |
| GST amount | 180 |
| Total (GST-inclusive) | 1180 |
Assumptions
- Uses a single flat GST rate — some bills mix items taxed at different rates (e.g. CGST+SGST split for different products), which this calculator doesn't itemize separately.
Frequently asked questions
When should I use "Add GST" vs "Remove GST"?
Use "Add GST" when you have the pre-tax price and want the final billed amount. Use "Remove GST" when you have the final price shown on a receipt (which already includes GST) and want to know the base price and GST portion.
What are the common GST slabs in India?
5%, 12%, 18%, and 28% are the standard slabs, with some essential items at 0% and certain luxury/sin goods attracting additional cess on top of 28%.
Is CGST+SGST different from IGST?
For intra-state sales, GST splits equally into CGST and SGST (e.g. 18% becomes 9%+9%); for inter-state sales, the full rate is charged as IGST — either way, the total GST amount charged is the same.