Discount Calculator
Final price and savings after one or two stacked discounts, coupons and GST
| Step | Amount |
|---|---|
| Original price | ā¹2,999.00 |
| Less 40% discount | -ā¹1,199.60 |
| You pay | ā¹1,799.40 |
Runs entirely in your browser. Nothing you type or upload is sent to us or stored.
Results are for general guidance. Please check anything important before relying on it. Terms of use
How to Use
- Enter the original price (MRP or the price before the sale).
- Choose one discount, or two discounts for offers like "40% + 10% extra", and enter the percentages. If the tag only shows two prices, choose Find the discount % and enter the sale price instead.
- Add a flat ā¹ off or coupon if you have one.
- Optionally choose how GST applies: shown inside the price, or added on top of the discounted price.
- The final price, your savings and the real total discount update as you type, with a step-by-step breakdown below.
How discounts really add up
Sale banners in Indian shops and shopping apps love stacked offers: "Flat 40% off + extra 10%", "50% + 20% on prepaid orders", "Buy now, ā¹200 off with coupon". The headline numbers look like they add up, but they don't. The second discount is taken from the already reduced price, so "40% + 10%" is 46% off, not 50%. This calculator works out the final price, how much you save, and the true total discount, including any coupon and GST.
The formulas
Total discount % = 1 ā (1 ā d1) Ć (1 ā d2), before the coupon
You save = original price ā final price
Here d1 and d2 are the two discounts as fractions (40% = 0.40). The order of the two percentages does not matter: 40% then 10% gives the same price as 10% then 40%. A flat ā¹ coupon is different: taken off last, as this calculator does, it saves its full value; taken off before a percentage discount, it saves less, because the percentage then applies to the coupon too.
Worked example
A pair of shoes has an MRP of ā¹2,999. The offer is 40% off + 10% extra.
- After 40% off: 2,999 Ć 0.60 = ā¹1,799.40
- After the extra 10%: 1,799.40 Ć 0.90 = ā¹1,619.46
- You save ā¹1,379.54, which is 46% of ā¹2,999, not 50%.
With an additional ā¹100 coupon, you pay ā¹1,519.46 and the total discount rises to about 49.3%.
Stacked discounts at a glance
| Offer | Looks like | Actual discount |
|---|---|---|
| 20% + 10% | 30% | 28% |
| 30% + 20% | 50% | 44% |
| 40% + 10% | 50% | 46% |
| 50% + 20% | 70% | 60% |
| 60% + 10% | 70% | 64% |
Discounts and GST
For goods sold to consumers in India, the MRP already includes all taxes, so a discount on the MRP lowers what you pay, GST included. Choose "Price includes GST" to see how much of your final price is GST. For business purchases, services or quotes where prices are given before tax, choose "Add GST to the discounted price": GST is then charged on the reduced price, so the discount also saves you GST. A discount shown on the invoice at the time of sale reduces the value on which GST is charged.
Smart shopping tips
- Check the "original" price. A big percentage off an inflated MRP may still be more than the usual selling price. Compare with other sellers.
- Read the conditions. "Extra 10%" offers often have a cap (for example, up to ā¹150) or need a specific card or minimum order value.
- Count delivery and convenience fees, which reduce the real saving on small orders.
- Compare per unit when pack sizes differ. Our unit price calculator shows which pack is cheaper per kg or litre.