Free tool
Apply a discount to a price, or check what the original price must have been before one was taken off.
By Mohit Sehgal, founder of BahiSathi · Updated 22 Aug 2026
Result
| You have | You want | Formula |
|---|---|---|
| The original price | Price after discount | final = original × (1 − discount ÷ 100) |
| The discounted price | The original price | original = final ÷ (1 − discount ÷ 100) |
A "flat 20%, extra 10%" offer is not 30% off. Each percentage applies to what is left after the one before it: ₹1,000 down to ₹800 at 20%, then down to ₹720 at a further 10%, which is a 28% reduction overall, not 30%.
Questions
Discounted price = original price × (1 − discount ÷ 100). For ₹1,000 at 20% off, that is ₹1,000 × 0.8 = ₹800, a saving of ₹200.
Original price = discounted price ÷ (1 − discount ÷ 100). For ₹800 paid at a 20% discount, that is ₹800 ÷ 0.8 = ₹1,000. Dividing by 0.8, not adding 20% back onto ₹800, is the part that trips people up: adding 20% back gives ₹960, not ₹1,000.
Yes. MRP is just the original price the percentage is taken off, so the same formula applies: selling price = MRP × (1 − discount ÷ 100).
No, and it is always less. Each discount applies to what is left after the one before it, so two 10% discounts leave 0.9 × 0.9 = 0.81, a 19% reduction, not 20%.
Add a discount to any line on a quotation or invoice in BahiSathi, in rupees or percent, and the total updates as you type.
