Math & EverydayVerified: 2026-10-05
Discount Calculator
Calculate sale prices, total money saved, and final costs with sales tax / GST. Includes instant discount percentage breakdowns and shopping savings.
Direct Answer:To calculate a discount, multiply the original price by the discount percentage and divide by 100 (e.g., 20% off ₹2,000 = ₹400 savings). Subtract the savings from the original price to find the final sale price (₹2,000 − ₹400 = ₹1,600).
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Adjust Parameters
₹2 Thousand
₹
₹0₹10,00,000
Original retail or tag price before discount
%
0%100%
Percentage reduction offered
%
0%28%
Goods and Services Tax (GST) rate if not included in price
Final Price to Pay
₹1,600
You Save: ₹400 (20%)
Original price of ₹2,000 with a 20% discount saves you ₹400, bringing the final price to ₹1,600.
Total Savings
₹400
Original Price
₹2,000
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How Discount Calculator is Calculated
Transparent mathematical formulas and assumptions used across our financial engines.
Mathematical Formula
\text{Discount Amount} = P \times \frac{D}{100} \quad | \quad \text{Final Price} = (P - \text{Discount}) \times \left(1 + \frac{T}{100}\right)
Variables & Legend
P
Original Price
D
Discount Rate (%)
T
Tax / GST Rate (%)
Step-by-Step Calculation
- Find Discount:
P * (D / 100)Computes total monetary reduction from list price.
- Price After Discount:
P - DiscountSubtracts savings to find subtotal.
- Apply Tax (if any):
Subtotal * (1 + T / 100)Calculates final payable price including tax.
Conventions & Assumptions
- In India, MRP is almost always inclusive of GST, so sales tax can usually be left at 0%.
- If tax is applicable on discounted price, it is calculated after the markdown is applied.
Frequently Asked Questions
Multiply the original price by 0.20 to get the discount amount. Then subtract that amount from the original price. For example: 20% off ₹1,500 = ₹300 discount → final price = ₹1,200.