Discount Calculator
Calculate sale price, discount amount, or find what % discount was applied. Supports stacked discounts.
Enter values and click Calculate
Discount Calculator — Sale Price, Original Price & Discount Percentage
A discount calculator helps you quickly find how much you save, the final price after a discount, or what discount percentage you received. This is useful for shoppers comparing deals, retailers setting sale prices, and business owners calculating margin after promotions. Our calculator handles all three modes plus stacked discounts.
During India's major sale events — Flipkart Big Billion Days, Amazon Great Indian Festival, Myntra EORS — it's easy to get confused by "extra 10% bank discount" and "additional 15% coupon" on top of the advertised 40% off. Understanding how stacked discounts work can save you from overestimating your savings. A 40% + 10% + 15% offer does NOT give you 65% off!
What is a Discount?
A discount is a reduction in the standard price of a product or service, offered to customers to incentivise purchase, reward loyalty, clear inventory, or compete in the market. Discounts affect both revenue (lower selling price) and profitability (impact on margins), making discount strategy a critical business decision.
- Types of discounts: trade discounts (given to resellers/distributors), quantity discounts (for bulk purchases), cash discounts (for early payment, e.g., 2/10 net 30 — 2% off if paid within 10 days), and seasonal discounts.
- Discount impact on profit: a 10% discount on a product with 30% gross margin eliminates one-third of the margin — the business must sell significantly more volume just to maintain the same total profit.
- Break-even volume after discount: if you reduce price by 10% and your gross margin was 25%, you need to increase unit sales by 67% just to maintain the same gross profit in absolute terms.
- GST implications: discounts that are clearly stated in the invoice reduce the taxable value for GST computation. Post-sale discounts (credit notes) must meet specific conditions to be valid for GST input tax credit reversal.
How to Use This Calculator
- Find sale price: Enter original price + discount % to get final price and savings amount
- Find original price: Enter discounted price + discount % to reverse-calculate the original
- Find discount %: Enter original and final price to find what percentage was discounted
- For stacked discounts, enter both percentages to see the true effective discount
Discount Formulas
- Savings = Original Price − Sale Price
- Discount% = (Original − Sale) / Original × 100
- Original Price (reverse calculation):
- Original = Sale Price / (1 − Discount% / 100)
- Stacked Discounts (NOT additive!):
- Effective% = 1 − (1 − d1/100) × (1 − d2/100)
- Example = 20% + 10% = 1 − 0.80 × 0.90 = 28% (not 30%)
- Example = ₹2,500 MRP, 30% discount
- Sale Price = 2,500 × 0.70 = ₹1,750 | Savings = ₹750
Key Terms
- MRP (Maximum Retail Price)
- The maximum price at which a product can be legally sold in India — printed on packaging.
- Stacked Discount
- Multiple discounts applied sequentially — each discount applies on the already-reduced price.
- Bank Offer
- Additional discount for using a specific bank card — applied on the cart price after all product discounts.
- Flat Discount
- A fixed rupee amount deducted (e.g., ₹500 off), not a percentage.
Frequently Asked Questions
Sale Price = Original Price × (1 − Discount%/100). For 30% off ₹2,500: Sale Price = 2,500 × 0.70 = ₹1,750. Savings = ₹750. Quick mental math: for 30% off, multiply by 0.7; for 25% off, multiply by 0.75; for 20% off, multiply by 0.8.
Stacked discounts are applied sequentially, NOT added together. 20% + 10% off ≠ 30% off. On ₹2,500: First 20% off → ₹2,000. Then 10% off ₹2,000 → ₹1,800. Effective discount = 28% (₹700 saved), not 30% (₹750). Formula: Effective = 1 − (1−d1/100)×(1−d2/100).
Original Price = Discounted Price / (1 − Discount%/100). If you paid ₹1,750 with 30% discount: Original = 1,750 / 0.70 = ₹2,500. This helps verify if the original price shown is genuine or inflated for the purpose of showing a bigger discount.
Discount% = (Original Price − Sale Price) / Original Price × 100. Example: Original ₹1,200, paid ₹840: Discount = (1200−840)/1200 × 100 = 30%. This is useful when you want to compare deals across platforms.
Not always. Some sellers inflate the "original price" before a sale to show a larger discount. The best defense: track the product's price history using browser extensions or price tracker websites. Also compare the final price with the same product on competing platforms. A genuine 40% discount should show a price significantly below normal market price.