Bizzilo One · GST tools
GST calculator. Add or remove GST at today's rates.
This GST calculator adds GST to a price or takes it out of a GST-inclusive amount, at the rates in force since 22 September 2025: 5%, 18% and 40%, plus the special 0.25%, 1.5% and 3% rates. It shows the CGST and SGST split for sales within a state and IGST for sales between states.
Free, no sign-up. Works in your browser.
Calculate GST.
Enter an amount, choose whether it includes GST, and pick a rate.
Result
- Amount before GST
- ₹10,000.00
- GST at 18%
- ₹1,800.00
- Total with GST
- ₹11,800.00
Within a state
CGST + SGST (or UTGST)
- CGST 9%
- ₹900.00
- SGST 9%
- ₹900.00
Between states
IGST
- IGST 18%
- ₹1,800.00
GST = ₹10,000.00 × 18 ÷ 100. Rounded to the paisa; an odd paisa goes to CGST.
Calculated in your browser. Nothing you enter is sent to Bizzilo or stored.
How to use
Work out GST in four steps. The answer updates as you type.
Choose the direction
Pick Excludes GST to add tax to a price, or Includes GST to find the tax inside a price.
Enter the amount
Type the amount in rupees. Commas are fine: 1,25,000 and 125000 give the same result.
Pick the rate
Choose 5%, 18%, 40% or a special rate, or enter a custom rate for anything else.
Read the split
Use CGST and SGST for a sale within your state, and IGST for a sale to another state.
GST rates as of 26 Sep 2026
GST rates after the 2025 changes. Two main rates, one higher rate.
The 56th GST Council meeting (3 September 2025) replaced the four main slabs of 5%, 12%, 18% and 28% with a standard rate of 18%, a merit rate of 5% and a 40% rate for a select few goods and services. The new rates apply from 22 September 2025.
| Rate | Applies to |
|---|---|
| 0% | Nil-rated and exempt supplies, such as fresh food, and individual life and health insurance |
| 0.25% | Rough precious and semi-precious stones |
| 1.5% | Cut and polished diamonds |
| 3% | Gold, silver and jewellery |
| 5% | Merit rate: many everyday goods, medicines, and services such as salons and budget hotel rooms |
| 18% | Standard rate: most goods and services, including electronics, cement and small cars |
| 40% | Select luxury and sin goods; tobacco products from 1 February 2026 |
Tobacco products (such as cigarettes and chewing tobacco) kept 28% plus compensation cess until 31 January 2026 and moved to 40% from 1 February 2026, under Notification 19/2025-Central Tax (Rate). The rate for any item depends on its HSN code: check it in the CBIC rate schedules before you bill.
To bill with these rates and file returns from the same ledger, see Bizzilo One accounting.
Questions
GST calculation, answered. Plain answers, with sources above.
What are the GST rates in India now?
Since 22 September 2025 most goods and services are taxed at 5% or 18%, with 40% for a short list of luxury and sin goods. Special rates remain: 3% for gold, silver and jewellery, 1.5% for cut and polished diamonds and 0.25% for rough precious stones. Essentials such as fresh food are nil-rated.
Are 12% and 28% GST still used?
Not for supplies after the 2025 rationalisation. The GST Council moved most 12% items to 5% and most 28% items to 18% from 22 September 2025. Tobacco products stayed at 28% plus compensation cess until 31 January 2026 and moved to 40% from 1 February 2026. The calculator keeps 12% and 28% for checking older invoices.
How do I calculate GST on an amount?
Multiply the amount before GST by the rate and divide by 100. At 18%, GST on ₹10,000 is ₹1,800, and the total is ₹11,800.
How do I remove GST from a price that includes it?
Divide the GST-inclusive price by (100 + rate) and multiply by 100 to get the amount before GST. At 18%, ₹11,800 × 100 ÷ 118 = ₹10,000, so the GST is ₹1,800.
When is it CGST and SGST, and when is it IGST?
When the supplier and the place of supply are in the same state, the GST is split equally into CGST and SGST (UTGST in Union territories without a legislature). When they are in different states, or the supply is an import or export, the full rate is charged as IGST.
How is GST rounded?
This calculator rounds each amount to the paisa, half up. On invoices, each tax head is usually worked out and rounded separately, and the invoice total may be rounded to the nearest rupee with a round-off line.
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