This free GST calculator helps you calculate Goods and Services Tax for any product or service in India, updated for the 2025-26 financial year. Simply enter the amount, select the GST slab, and get an instant breakdown of CGST, SGST, and IGST.
| GST Slab | Common Examples | Type |
|---|---|---|
| 0% | Fresh vegetables, milk, eggs, wheat flour, rice, unbranded bread, books, newspapers, sanitary napkins, hearing aids | Exempt / Essential |
| 5% | Edible oils, sugar, tea, coffee, domestic LPG, medicines (essential), small restaurant (non-AC), economy flight tickets, fertilizers | Basic necessities |
| 18% | Mobile phones, laptops, AC, refrigerators, restaurant (AC), telecom, insurance, IT services, most branded goods, clothing above โน1000 | Standard rate |
| 40% | Luxury cars, SUVs, cigarettes, tobacco, alcohol, luxury hotels (above โน7500/night), designer goods, yachts | Luxury / Sin goods |
CGST (Central GST) and SGST (State GST) are charged on sales within the same state (intra-state). Each is half the applicable GST rate. For example, on an 18% GST purchase within your state, you pay 9% CGST + 9% SGST.
IGST (Integrated GST) is charged on sales between two different states (inter-state). It equals the full GST rate โ so the same 18% item sold across states attracts 18% IGST.
To add GST (calculate tax on a base price): GST Amount = Base Price ร GST Rate รท 100. Total = Base Price + GST Amount.
To remove GST (find base price from a GST-inclusive price): Base Price = Total ร 100 รท (100 + GST Rate). GST Amount = Total โ Base Amount.
AI tools like ChatGPT and Gemini often provide incorrect GST rates โ especially after the September 2025 slab restructuring โ because they don't have real-time data. This calculator is updated for FY 2025-26 and uses a product-search database of 200+ items so you get the right slab instantly without needing to look it up separately.