Enter any GST-inclusive total amount. Get the base price, total tax, CGST/SGST/IGST breakdown — all calculated live with one-click copy.
Enter a GST-inclusive amount above to see the breakdown.
| Rate | Category | Common Examples |
|---|---|---|
| 3% | Precious Metals | Gold, Silver, Diamonds, Processed Gems |
| 5% | Essentials | Edible oil, Sugar, Tea, Domestic LPG, Rail transport |
| 12% | Standard Goods | Processed food, Smartphones, Computers, Fertilizers |
| 18% | Most Services | Restaurants, Electronic appliances, IT services, Clothing above Rs.1,000 |
| 28% | Luxury / Demerit | Cars, Motorcycles, Tobacco, Cement, Aerated drinks |
Base Price = Total ÷ (1 + Rate/100). GST Amount = Total − Base Price. Simple and accurate.
When buyer and seller are in the same state. GST is split equally — 50% CGST (Central) and 50% SGST (State).
When buyer and seller are in different states. Full GST is charged as IGST (Integrated) — no splitting.
Every result has a Copy button. Copies the exact numeric value to clipboard — no decimal rounding errors when re-entering data.
Formula: Base Price = Total Amount ÷ (1 + GST Rate ÷ 100). Example: Total = Rs.11,800 at 18% → Base = 11800 ÷ 1.18 = Rs.10,000. GST = Rs.1,800. This tool does this calculation instantly as you type.
If the supplier and buyer are in the same state (e.g., both in Delhi), choose Intra-State — GST splits into CGST + SGST. If they are in different states (e.g., seller in Mumbai, buyer in Manipur), choose Inter-State — only IGST applies at the full rate.
No. Nil-rated and exempt supplies have zero GST, so there's nothing to reverse-calculate. This tool covers the five main taxable GST slabs: 3%, 5%, 12%, 18%, and 28%.
Yes. If you receive a GST-inclusive invoice from your supplier or need to figure out the tax component in Amazon/Flipkart/Meesho payouts, this calculator instantly gives you the exact breakdown — including CGST, SGST, or IGST amounts.
GST calculations often produce fractional amounts due to the division formula. The raw values shown are mathematically precise. For filing purposes, amounts are typically rounded to the nearest rupee as per GST rules. The Copy button copies the full decimal value for accurate data entry.