Multiple Discount Calculator
Final price after successive discounts, a coupon and tax. Results update as you type.
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Results
Fill in the details above and the results appear here.
About the Multiple Discount Calculator
Work out the final price when a product has more than one discount, such as 20% off, then an extra 10% off, plus a flat coupon and tax. Each step is shown so you can see where the savings come from.
It also shows the true combined discount, which is smaller than the percentages added together.
Choose your currency (₹, $, €, £ and more) and every amount updates. The calculation runs in your browser, so the numbers you enter are not uploaded.
Multiple Discount Calculator example
Original price: 4999
First discount: 20 %
Second discount: 10 %
Third discount: 5 %
Flat coupon off: 200
Tax / GST: 18 %Final price: ₹3,798.79
You save: ₹1,779.68
Effective percentage discount: 31.6%
Original price: ₹4,999
After discount 1 (20%): ₹3,999.20
After discount 2 (10%): ₹3,599.28How it is calculated
Each percentage is applied to the price left after the previous one. 20% then 10% leaves 80% × 90% = 72% of the price, a 28% discount, not 30%. A flat coupon is taken off after the percentage discounts, and tax is added at the end.
Price after each discount = previous price × (1 − discount ÷ 100)Effective discount = 1 − (1 − d₁)(1 − d₂)(1 − d₃)Final = (price after discounts − coupon) × (1 + tax ÷ 100)
What to enter
- Flat coupon off. Taken off after the percentage discounts.
- Tax / GST. Added to the discounted price.
How to use the Multiple Discount Calculator
- Fill in the fields above. Required fields are marked, optional ones can be left blank and fall back to the defaults described on this page.
- Use “Try an example” to see a worked case, then replace the numbers with your own.
- Read the results as you type. The large card is the main answer and the smaller cards are the related figures.
- Copy a single value or everything, or share a link that keeps your inputs.
Multiple Discount Calculator FAQ
How does the multiple discount calculator work?
Each percentage is applied to the price left after the previous one. 20% then 10% leaves 80% × 90% = 72% of the price, a 28% discount, not 30%. A flat coupon is taken off after the percentage discounts, and tax is added at the end.
Why is 20% + 10% not 30% off?
The second discount applies to an already reduced price, so it takes off less money than the first. Two successive discounts always give less than their sum.
Does the order of percentage discounts matter?
No. Multiplying the percentages in any order gives the same price. The order does matter for a flat coupon, which is applied after the percentages here.
Is this multiple discount calculator free and private?
Yes. It is free with no sign-up, and the calculation happens on your device, so your numbers are never sent to a server.
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