Money
GST
Add GST to a net price, or remove it from a price that already includes GST.
₹
Total price including GST
-
- Price before GST-
- GST amount-
- CGST-
- SGST-
- IGST-
Check the HSN or SAC code for the correct rate. Some goods also attract cess.
How it works
How the GST Calculator works
Quick answer: GST of 18% on ₹10,000 is ₹1,800.00, making the total ₹11,800.00. Within a state it splits into ₹900.00 CGST and ₹900.00 SGST.
Formula
Add GST: GST = amount × rate ÷ 100, total = amount + GST
Remove GST: price before GST = amount × 100 ÷ (100 + rate)Within one state, half the GST is central (CGST) and half is state (SGST). Between states the whole amount is integrated GST (IGST).
Worked example
₹10,000 at 18%, sold within a state: GST ₹1,800.00 (₹900.00 CGST + ₹900.00 SGST), total ₹11,800.00. Removing GST from ₹11,800 gives back ₹10,000.
GST on ₹10,000 at each slab
| Rate | GST amount | Total | |
|---|---|---|---|
| 3% | ₹300.00 | ₹10,300.00 | Open |
| 5% | ₹500.00 | ₹10,500.00 | Open |
| 18% | ₹1,800.00 | ₹11,800.00 | Open |
| 40% | ₹4,000.00 | ₹14,000.00 | Open |
Assumptions and limits
- Since September 22, 2025 most goods and services use the 5% and 18% slabs, with 40% for luxury and sin goods. Some items are nil-rated or exempt.
- Since February 1, 2026 tobacco and pan masala are also taxed at 40%; the old compensation cess was replaced by excise duty and a health cess charged outside GST.
- Businesses claim input tax credit separately; this calculator shows the tax on one invoice.
Frequently asked questions
How do I remove GST from a price?
Multiply the GST-inclusive price by 100 and divide by 100 plus the rate. For 18%: ₹11,800 × 100 ÷ 118 = ₹10,000.
Are 12% and 28% GST rates gone?
Yes, for practical purposes. From September 22, 2025 most 12% items moved to 5% or 18% and most 28% items moved to 18%, with a new 40% slab for luxury and sin goods. Tobacco and pan masala, the last items at 28% plus cess, moved to 40% on February 1, 2026.