Discount Calculator
Calculate sale price and money saved — percent off, fixed amount off, multi-item deals, reverse discount % and original price, with optional GST.
You save
$55.80
20% off $279.00
Final price
$223.20
How it works
Discount = price × (discount% ÷ 100). Final = price − discount. With GST: total = final + final × (GST% ÷ 100).
Example: ₹1,000 at 20% off → save ₹200, pay ₹800. With 18% GST → ₹944.
Last updated: July 2026
How this calculator is verified
Checked by Rahim Virani on
- Forward discount and reverse (find original price) verified as inverses
- Multi-item discount apportioned by item price so the totals reconcile
- Double-discount applied sequentially, not additively
The full verification method is on our how we verify page. Found an error? Tell us and we will re-check it.
When to Use This Calculator
Discounts are everywhere in Indian retail — festive sales, flash deals and clearance racks — and this calculator instantly shows the final price, the amount saved and the effective percentage. Shoppers use it during Diwali, Big Billion Day and year-end sales to compare a 30% off tag against a flat ₹500 off offer and see which is genuinely better. It also handles the GST trap: enter the tax rate and it correctly applies the discount first, then adds GST on the reduced price, matching how real invoices are raised. Sellers and small businesses use the reverse mode to price stock, working out what discount percentage a competitor's offer actually represents.
How to Use This Calculator
- Step 1: Enter the original price of the item, for example the marked price on the price tag.
- Step 2: Enter the discount as a percentage, such as 30 for a 30% off sale.
- Step 3: Read the discount amount and the final price you pay after the reduction.
- Step 4: To work backwards, switch the mode and enter the original price plus the amount you actually paid to recover the discount percentage.
Worked Example
A kurta is marked at ₹1,499 and the shop is offering 30% off. Enter 1499 as the original price and 30 as the discount percentage: the discount works out to ₹449.70 and the final price is ₹1,049.30. If you only know the sale price, enter the original price and the paid amount in the reverse mode and the tool returns the discount percentage. GST is not part of the calculation, so check whether the store quotes prices before or after tax before comparing deals.
Tips and Common Mistakes
- •Tip 1: Compare the final price after discount with online prices, since sellers often raise the marked price before slapping a discount on it.
- •Tip 2: If the store quotes a flat rupee discount, such as ₹200 off, work out the percentage by entering the paid price in the reverse mode.
- •Tip 3: For 'Buy 2 Get 1 Free' offers, compute the effective discount by treating the cost of three items as two paid prices.
- ✗Mistake 1: Entering the discount as a rupee amount (for example 500) when the field expects a percentage, which produces a nonsense result.
- ✗Mistake 2: Assuming the discounted price includes GST, when most Indian retail tags show the MRP including tax already.
Frequently Asked Questions
How do I calculate the price after a discount?
Multiply the original price by the discount percentage and subtract the result. For a ₹1,000 item at 20% off, you save ₹200 and pay ₹800.
How do I find the discount percentage?
Divide the amount you saved by the original price and multiply by 100. If you paid ₹750 for something priced at ₹1,000, you saved ₹250, which is a 25% discount.
Should GST be added before or after the discount?
In India, GST is charged on the discounted (net) price, so the discount is applied first and tax is calculated on the reduced amount. This matches how retail invoices are usually raised.
What is the difference between discount and GST?
A discount reduces the selling price; GST is a tax added to it. On a ₹1,000 item with 20% off and 18% GST, you pay ₹800, then ₹144 GST, for a total of ₹944.
Why does stacking two discounts save less than the sum?
Each discount applies to the already-reduced price. A 50% off plus 10% off does not mean 60% off — the second 10% applies to the halved price, giving about 55% off in total.
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