Discount Calculator - Single, Stacked & Reverse
Calculate discounts, sale prices, and savings. Supports single discount, stacked/cascading discounts, and reverse discount calculation. Add GST to discounted price.
Discount Calculator
Calculate discounts, sale prices & savings
20%
1%90%
Add GST to Sale Price
Discount Results
You Pay
₹4,000
Original Price
₹5,000
You Save
₹1,000
Quick Discount Reference
| MRP | 10% Off | 20% Off | 25% Off | 30% Off | 40% Off | 50% Off |
|---|---|---|---|---|---|---|
| ₹500 | ₹450 | ₹400 | ₹375 | ₹350 | ₹300 | ₹250 |
| ₹1,000 | ₹900 | ₹800 | ₹750 | ₹700 | ₹600 | ₹500 |
| ₹2,000 | ₹1,800 | ₹1,600 | ₹1,500 | ₹1,400 | ₹1,200 | ₹1,000 |
| ₹5,000 | ₹4,500 | ₹4,000 | ₹3,750 | ₹3,500 | ₹3,000 | ₹2,500 |
| ₹10,000 | ₹9,000 | ₹8,000 | ₹7,500 | ₹7,000 | ₹6,000 | ₹5,000 |
How to Use the Discount Calculator
- Single Discount — Enter MRP and discount percentage to find sale price and savings.
- Stacked Discounts — Calculate the real discount when multiple offers are stacked (e.g., 20% + 10% off).
- Find Discount % — Enter original and sale price to find the actual discount percentage.
- Add GST — Toggle GST to see the final price including tax at 5%, 12%, 18%, or 28%.
Frequently Asked Questions
How do I calculate discount percentage?
Discount % = ((Original Price - Sale Price) / Original Price) × 100. For example, if MRP is ₹5,000 and sale price is ₹3,500: Discount = ((5000-3500)/5000) × 100 = 30%.
Is 20% + 10% off the same as 30% off?
No! Stacked discounts are not additive. 20% off on ₹1,000 = ₹800. Then 10% off on ₹800 = ₹720. Effective discount = 28%, not 30%. Each successive discount applies to the already-reduced price.
How is GST calculated on discounted price?
GST is always calculated on the sale price (after discount), not the MRP. If MRP is ₹5,000, discount is 20% (sale price = ₹4,000), and GST is 18%, then GST = ₹4,000 × 18% = ₹720. Final price = ₹4,720.
What is the difference between discount on MRP and discount on selling price?
Discount on MRP means the percentage is calculated on the maximum retail price. Discount on selling price means the percentage is applied to the store's listed price, which may already be below MRP.
How to calculate the original price from the discounted price?
Original Price = Sale Price / (1 - Discount%/100). If sale price is ₹3,500 at 30% discount: Original = ₹3,500 / (1 - 0.30) = ₹3,500 / 0.70 = ₹5,000.
What is a buy-one-get-one (BOGO) offer in discount terms?
A BOGO (Buy 1 Get 1 Free) is effectively a 50% discount when buying 2 units. Buy 2 Get 1 Free is a 33.3% discount. These are often better than percentage discounts but only if you need multiple units.
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