GST Calculator
Add GST to a base price or remove GST from an inclusive price. Get the CGST/SGST breakup instantly for invoices and billing.
| Base amount (before GST) | ₹10,000.00 |
| CGST (9%) | ₹900.00 |
| SGST (9%) | ₹900.00 |
| Total GST (18%) | ₹1,800.00 |
| Total amount (with GST) | ₹11,800.00 |
For inter-state supply, the total GST applies as IGST instead of the CGST + SGST split.
Frequently Asked Questions
How do I remove GST from an amount?
To find the base amount from a GST-inclusive price, divide by (1 + rate/100). For example, ₹1,180 at 18% GST → 1180 ÷ 1.18 = ₹1,000 base and ₹180 GST. Choose 'Remove GST' mode above and this is done for you.
What is the CGST/SGST split?
For sales within the same state, GST is split equally between the Centre (CGST) and the State (SGST). An 18% GST becomes 9% CGST + 9% SGST. For inter-state sales the whole amount is charged as IGST.
What are the GST rates in India?
The main GST slabs are 0%, 5%, 12%, 18% and 28%, with special rates like 0.25% (rough diamonds) and 3% (gold). Rates change through GST Council decisions, so check the current rate for your product or service.