Enter the price before GST, or the GST-inclusive price if you choose 'remove GST'.
Main slabs are 5% and 18%; 40% for luxury and sin goods; 3% for gold.
Add GST to a base price, or take it out of an inclusive price.
Within a state: CGST + SGST split equally. Between states: IGST.
Quick examples
18% GST on a base of ₹10,000.
What each result means
Price with GST
What it is: Base + GST.
Your value: ₹11,800
What the buyer pays.
Price before GST
What it is: Taxable value.
Your value: ₹10,000
Seller's revenue.
Total GST
What it is: Base × rate.
Your value: ₹1,800
Paid to the government.
Split
What it is: CGST + SGST or IGST.
Your value: CGST ₹900 + SGST ₹900
Depends on place of supply.
Year-by-year breakdown
| Rate | Before GST (₹) | GST (₹) | With GST (₹) |
|---|---|---|---|
| 0% | ₹10,000 | ₹0 | ₹10,000 |
| 3% | ₹10,000 | ₹300 | ₹10,300 |
| 5% | ₹10,000 | ₹500 | ₹10,500 |
Same base price at every GST slab.
Showing the first 3 of 5 years. Want charts, formulas and the full schedule? Get the detailed PDF.
What this calculator does
Adds GST to a price or takes it out of a GST-inclusive price, and shows the CGST/SGST or IGST split, using the rate structure in force since 22 September 2025.
What your result means
Removing GST is not the same as subtracting the rate from the total: divide by (1 + rate).
Formula
1. Add and remove GST
Symbols
- B
- Price before GST (₹)
- g
- GST rate (decimal)
Why this formula works
GST is charged on the taxable value.
Unit check
₹. ✓
Worked example
₹1,180 at 18%: B = 1,180 ÷ 1.18 = ₹1,000.
Common mistakes
Taking 18% of the inclusive price to find GST.
Working for your numbers
- GST = ₹10,000 × 18% = ₹1,800
- Total = ₹11,800
Frequently asked questions
What are the current GST slabs?
From 22 September 2025 the main slabs are 5% and 18%, with 40% on luxury and sin goods, plus special rates like 3% on gold and 0% on essentials. Check CBIC for your item's rate.
Does this calculator tell me what to do?
No. It is an educational estimate using published rules. It does not know your full situation. For a personal decision, speak to a qualified tax professional or a SEBI-registered investment adviser.
Symbols and assumptions
- g
- GST rate (%)
- No compensation cess or special valuation.
- Figures are in Indian Rupees (₹).
Sources and review
Reviewed 2026-10-05 · Next review 2026-12-31
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How it works
Calculates GST amount based on the slab (5%, 12%, 18%, 28%) and total amount.
The formula
GST = (Amount × Rate) / 100- GST
- Goods and Services Tax
- ITC
- Input Tax Credit
Worked example
Adding 18% GST to a ₹5,000 service invoice.
Pro tips
- Net-of-GST price is required for proper accounting.
- Verify the GST slab for your specific service category.
Common mistakes
- Double-calculating GST on an inclusive price.
Go deeper
Concepts to explore
Related guides
Institutional grade calculations are illustrative and for educational wealth architecture. Results do not constitute investment advice.