How to use the gst calculator 18 percent
- Choose Add to put 18 percent on a price, or Remove to take it out of a total.
- Enter the amount. The page starts with ₹2,500.
- Read the price before GST, the GST amount, the CGST and SGST halves and the IGST figure.
About this scenario
The 18 percent slab is one of the most common GST rates on goods and services in India, and many people look it up with a ready rate. Rates change and items move between slabs, so confirm the rate for your item. This page fixes the rate at 18 percent so you only type the price.
Worked example
The page opens in add mode with a price of ₹2,500. GST at 18 percent is ₹450, so the price including GST is ₹2,950. Of that GST, ₹225 is CGST and ₹225 is SGST for a sale within one state.
Adding 18 percent GST to a few prices:
| Price before GST | GST at 18% | Price with GST |
|---|---|---|
| ₹100 | ₹18 | ₹118 |
| ₹500 | ₹90 | ₹590 |
| ₹1,000 | ₹180 | ₹1,180 |
| ₹2,500 | ₹450 | ₹2,950 |
| ₹10,000 | ₹1,800 | ₹11,800 |
Taking GST out of a few totals:
| Total with GST | Price before GST | GST inside |
|---|---|---|
| ₹1,180 | ₹1,000 | ₹180 |
| ₹5,900 | ₹5,000 | ₹900 |
| ₹11,800 | ₹10,000 | ₹1,800 |
| ₹23,600 | ₹20,000 | ₹3,600 |
What to notice
To take GST out of a price that already includes it, divide by 1.18, not subtract 18 percent. For a bill of ₹11,800 the price before GST is ₹10,000 and the GST is ₹1,800. Subtracting 18 percent from 11,800 would wrongly give ₹9,676, which is off by ₹324.
Tips
- Adding 18 percent is the same as multiplying the price by 1.18.
- For a sale between two states, the whole 18 percent is IGST instead of 9 percent CGST plus 9 percent SGST.
- Other slabs, such as 5 or 12 percent, are on the full GST calculator.
- See also: gst calculator, discount calculator for shopping, percentage increase calculator, emi calculator.
Estimates only, not financial advice. Everything runs in your browser. Nothing you type is uploaded.