Discount Calculator
Easily find the best deals with our Discount Calculator. Instantly compute discounts, final sale prices, and total savings with quick, accurate results.
Understanding Discounts
A discount reduces the original price of a product or service. This calculator helps you understand how discounts affect the final price.
How Discounts Work
Discounts can be calculated in two ways:
- Percentage Discount: A percentage of the original price is deducted. For example, a 20% discount on an item that costs ₹1000 means ₹200 is deducted, making the final price ₹800.
- Fixed Amount Discount: A specific amount is deducted from the original price. For example, a ₹200 discount on an item that costs ₹1000 makes the final price ₹800.
Calculating Tax
When taxes are included:
- The discount is applied first to get the discounted price.
- Then tax is calculated on the discounted price.
- The final price is the discounted price plus the tax amount.
For example, if a ₹1000 item has a 20% discount and 18% GST:
- Discounted price: ₹1000 - (₹1000 × 20%) = ₹800
- Tax amount: ₹800 × 18% = ₹144
- Final price: ₹800 + ₹144 = ₹944
Understanding Bulk Discounts
Bulk calculations help you figure out discounts on multiple items at once, useful for:
- Shopping carts with multiple products
- Retail price calculations
- Event or party budgeting
- Business purchases
How the Discount Formula Works
A discount calculator tells you how much money you save and what you will actually pay after a percentage is taken off the original price. The maths behind it is simple and uses just two formulas.
- Discount amount = Price × (Discount % ÷ 100)
- Final price = Price − Discount amount
Worked example: suppose a jacket costs ₹2,000 and the store offers 25% off. The discount amount = 2,000 × (25 ÷ 100) = ₹500. The final price = 2,000 − 500 = ₹1,500. So you save ₹500 and pay ₹1,500.
You can also reach the final price in one step by multiplying the original price by the remaining percentage. With 25% off, you pay 75% of the price: 2,000 × 0.75 = ₹1,500. Both methods give the same answer.
Finding the Original Price (Reverse Discount)
Sometimes you see a sale price and want to know the original price before the discount, or check whether a deal is genuine. This is the reverse discount calculation.
Original price = Sale price ÷ (1 − Discount % ÷ 100)
Worked example: a pair of shoes is on sale for ₹1,200 after a 20% discount. Original price = 1,200 ÷ (1 − 0.20) = 1,200 ÷ 0.80 = ₹1,500. That confirms the shoes were originally ₹1,500 and the discount saved ₹300.
This is handy when a tag only shows the final price, or when you want to verify a retailer's claimed savings before you buy.
Stacked and Successive Discounts
Many offers combine two discounts, such as 20% off followed by an extra 10% at checkout. A common mistake is to simply add them to get 30% off. Stacked discounts do not add up, because the second discount applies to the already-reduced price.
To calculate successive discounts, apply them one after another:
- Start price: ₹5,000
- After 20% off: 5,000 × 0.80 = ₹4,000
- After a further 10% off: 4,000 × 0.90 = ₹3,600
The total saving is ₹1,400, which equals an effective discount of 28%, not 30%. You can find the combined factor by multiplying the remaining percentages: 0.80 × 0.90 = 0.72, meaning you pay 72% of the original and save 28%.
The order in which you apply the two discounts does not change the final price, since multiplication is the same either way.
Quick Reference and Practical Tips
Here are common discount rates and what fraction of the price you end up paying, which makes mental maths faster while shopping.
| Discount | You pay | On ₹1,000 |
| 10% off | 90% | ₹900 |
| 25% off | 75% | ₹750 |
| 40% off | 60% | ₹600 |
| 50% off | 50% | ₹500 |
A few practical reminders: taxes such as GST are usually added after the discount, so the final bill may be slightly higher than the discounted price. Always compare the final price across stores rather than the headline percentage, since a smaller discount on a lower base price can still be the better deal.
Frequently Asked Questions
Multiply the original price by the discount percentage divided by 100 to get the discount amount, then subtract that from the price. For example, 30% off ₹800 is 800 × 0.30 = ₹240 saved, leaving a final price of ₹560.
Divide the sale price by 1 minus the discount as a decimal. If an item costs ₹850 after 15% off, the original price is 850 ÷ 0.85 = ₹1,000.
No. Stacked discounts apply in sequence, so 20% then 10% gives an effective 28% off, not 30%. You multiply the remaining factors: 0.80 × 0.90 = 0.72, meaning you pay 72% of the price.
In most cases the discount is applied to the item price first, and tax such as GST is then calculated on the reduced amount. This means your final bill may be slightly higher than the discounted price shown.
Subtract the sale price from the original price, divide by the original price, then multiply by 100. If a ₹2,000 item now costs ₹1,500, the discount is (500 ÷ 2,000) × 100 = 25%.
No. Because the discounts are multiplied together, applying 20% then 10% gives the same result as 10% then 20%. The final price and total saving are identical either way.