How to use the shopping discount calculator
- Enter the original price. The page starts with ₹3,000.
- Enter the first discount, such as a sale. The page starts with 30 percent.
- Enter the second discount, such as a coupon. The page starts with 15 percent. Use the third box for another offer.
- Read the final price, the amount saved and the effective discount.
About this scenario
Shops often stack offers: a sale percentage, then a coupon or card discount on top. The second discount applies to the already reduced price, so two offers never add up to the sum of their percentages. This page starts with exactly that, two stacked discounts.
Worked example
The page opens with an item priced ₹3,000, a 30 percent sale and a further 15 percent coupon. After the sale the price is ₹2,100, and after the coupon the final price is ₹1,785. You save ₹1,215, which is 40.5 percent off.
Two stacked discounts compared with the percentages added together:
| Offers | Added together | Effective discount |
|---|---|---|
| 10% then 10% | 20% | 19% |
| 20% then 10% | 30% | 28% |
| 30% then 15% | 45% | 40.5% |
| 40% then 20% | 60% | 52% |
| 50% then 25% | 75% | 62.5% |
What to notice
The two offers sound like 45 percent, but 30 plus 15 percent is 40.5 percent in practice. A single 45 percent discount would give ₹1,650, which is ₹135 cheaper. The order does not matter for the final price, because multiplication gives the same result either way.
Tips
- Always check whether the coupon applies before or after tax, and whether it covers delivery.
- Compare final prices, not percentages. A smaller discount on a lower list price can win.
- Use the third box if there is a card offer as well. The discount calculator page shows the same maths.
- See also: discount calculator, percentage decrease calculator, gst calculator 18 percent, percentage calculator.
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