About the GST Calculator
What is the GST Calculator?
Goods and Services Tax (GST) is charged on almost every sale of goods and services in India. From 22 September 2025, the reform popularly called GST 2.0 simplified the structure to two main rates — 5% and 18% — plus a 40% rate for luxury and sin goods, with 0% and 3% for specific items.
This GST calculator works both ways: enter a price before GST to add tax, or a GST-inclusive price to find the base price and the tax inside it. Choose whether the sale is within your state (split equally into CGST and SGST) or between states (IGST).
How to use the GST Calculator
- Amount (₹) (sample: 10,000)
- GST Rate (sample: 18% (standard rate))
- The Amount Is (sample: Before GST – add GST)
- Type of Supply (sample: Within the state (CGST + SGST))
- Press Calculate GST (results also refresh as you type). The result card shows the Total Amount, along with GST amount, Taxable value, Total amount and CGST (9%).
Formula used
GST = Price × Rate ÷ 100
- Adding GST = Total = Price × (1 + Rate ÷ 100)
- Removing GST = Base price = Inclusive price ÷ (1 + Rate ÷ 100)
Intra-state supplies: CGST = SGST = GST ÷ 2. Inter-state supplies: IGST = full GST.
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| Amount (₹) | 10,000 |
| GST Rate | 18% (standard rate) |
| The Amount Is | Before GST – add GST |
| Type of Supply | Within the state (CGST + SGST) |
| Result | Value |
|---|---|
| Total Amount (incl. GST) | ₹11,800 |
| GST amount | ₹1,800 |
| Taxable value | ₹10,000 |
| Total amount | ₹11,800 |
| CGST (9%) | ₹900 |
| SGST (9%) | ₹900 |
GST rate structure
| GST rate (from 22 Sep 2025) | Typical goods & services |
|---|---|
| 0% / exempt | Fresh milk, fruit and vegetables, unbranded paneer, individual life & health insurance |
| 3% | Gold, silver and jewellery |
| 5% | Packaged foods like butter, ghee and namkeen, toiletries, most medicines, hotel rooms up to ₹7,500, restaurants |
| 18% | Most goods and services: electronics, appliances, small cars, cement, professional and IT services |
| 40% | Luxury and sin goods: larger cars, motorcycles above 350 cc, aerated drinks, pan masala |
Tips for using the GST Calculator
- To remove 18% GST quickly, divide the inclusive amount by 1.18.
- Businesses registered under GST can claim input tax credit on purchases used for business.
- Confirm the exact rate for your product's HSN or service's SAC code, as some items have special rates.