Discount calculator
See what you really pay after a discount, even when two or three offers are stacked.
A discount calculator works out what you pay after one or more discounts, taking each one off the price left after the last. 40% off ₹2,000 and then 10% more comes to ₹1,080: 46% off in all, not 50%.
You pay after 40% off
₹1,200
Rupees one thousand two hundred only
- You save
- ₹800
- Discount
- 40%
You save ₹800 on ₹2,000.
Prices as you enter them. Add GST or delivery separately if your bill does. Nothing you type is stored.
Is GST added at the till? Work out the final bill with the GST calculator.
How to use this discount calculator
- Pick "Discount" for one offer, "Stacked" for two or three offers on top of each other, or "Margin" if you sell things.
- Type the original price, then the % off. If you only know the sale price, type that instead and we show the % off.
- For stacked offers, add the second discount, such as an extra 10% with a bank card. Press "+ Add another discount" for a third.
- For margin, type what the item cost you and what you sell it for.
Discount formulas
Sale price = Price × (1 − D ÷ 100)
- D
- The discount in %. 40% off means you pay 60% of the price.
- Stacked
- Each discount is taken off the price left after the one before: Price × (1 − D1 ÷ 100) × (1 − D2 ÷ 100).
- Discount %
- (Price − sale price) ÷ price × 100.
- Margin
- Profit ÷ selling price × 100, where profit = selling price − cost price.
- Markup
- Profit ÷ cost price × 100.
Worked example
A jacket costs ₹2,000. The sale gives 40% off, and your card gives an extra 10% off.
- 40% of ₹2,000 is ₹800, so the price drops to ₹1,200.
- 10% of ₹1,200 is ₹120, so you pay ₹1,080.
- You save ₹920 in all. That is 920 ÷ 2,000 = 46% off, not 50%.
- Original price
- ₹2,000
- You save
- ₹920
- You pay
- ₹1,080
- Total discount
- 46%
Is 20% + 10% the same as 30% off?
No. The second discount is taken off a price that is already lower, so it saves you less. Two offers always add up to less than their sum. The order does not matter: 10% then 20% gives the same result as 20% then 10%.
| Offers | Real discount | You pay on ₹1,000 |
|---|---|---|
| 10% + 10% | 19% | ₹810 |
| 20% + 10% | 28% | ₹720 |
| 30% + 20% | 44% | ₹560 |
| 40% + 10% | 46% | ₹540 |
| 50% + 20% | 60% | ₹400 |
| 50% + 50% | 75% | ₹250 |
| 50% + 20% + 10% | 64% | ₹360 |
So "flat 50%" beats "30% + 20%" on the same price. Compare the real discount before you choose an offer.
Margin or markup?
Both measure profit, but against different numbers. Buy at ₹800 and sell at ₹1,200, and you make ₹400. That is a 50% markup on cost, but a 33.33% margin on the selling price. Sellers often mix them up and price too low. If you want a 50% margin, you need to sell at twice the cost.
Discount calculator FAQs
How do I calculate the discount %?
Subtract the sale price from the original price, divide by the original price and multiply by 100. A ₹1,500 item sold for ₹1,200 is (1,500 − 1,200) ÷ 1,500 × 100 = 20% off. Type the sale price in the "Discount" mode to get it at once.
Is 20% + 10% equal to 30% off?
No, it is 28% off. The 10% comes off the price after the 20% discount. On ₹1,000 you pay ₹720, not ₹700.
Is the discount taken before or after GST?
For the final price, it makes no difference: both are multiplications. ₹1,000 with 10% off and then 18% GST is ₹1,062. Adding GST first and then taking 10% off is also ₹1,062. MRP labels already include tax, so a discount on the MRP is a discount on the tax-inclusive price. To add or remove GST, use the GST calculator.
What is the difference between margin and markup?
Markup is profit as a % of cost. Margin is profit as a % of the selling price. The same ₹400 profit on an ₹800 item sold at ₹1,200 is a 50% markup but a 33.33% margin.
What if I sell below cost?
The margin mode shows a loss in ₹ and a negative margin. Use it to see how far a clearance price takes you below cost.
Are "buy one get one" offers a 50% discount?
Only if you wanted both items and they cost the same. Buy one get one free is 50% off the pair. Buy two get one free is about 33% off each of the three items.
Is my data saved?
No. Everything is calculated in your browser. Nothing you type is sent to us or stored, except in a link you choose to copy or share.
For education only, not tax or business advice. Check the final bill, since some offers apply only to part of the price.