Discount Calculator - Calculate Sale Price & Savings Free Discount Calculator
Use our free discount calculator to find the sale price and total savings. Support for single and stacked (double) percentage discounts with instant results.
Discount Details
Your Savings
Discount Calculator - Guide
What is a Discount Calculator?
A discount calculator helps you find the sale price and total savings when a percentage discount is applied to the original price. It can also handle stacked (double) discounts where two successive discounts are applied one after another.
This is essential for shoppers, retailers, and businesses to quickly compare offers, calculate markdowns, and understand the true value of promotional deals.
Discount Formulas
Single Discount:
Discount Amount = Original Price × (Discount% ÷ 100)
Sale Price = Original Price − Discount Amount
Stacked (Double) Discount:
Price after 1st Discount = Original Price × (1 − D1/100)
Final Price = Price after 1st × (1 − D2/100)
Effective Discount:
Effective % = (1 − (1 − D1/100) × (1 − D2/100)) × 100
Understanding Stacked Discounts
When two discounts are applied one after another, the second discount is calculated on the already-reduced price, not the original. This means:
- 20% + 10% ≠ 30%: The effective discount is actually 28%.
- Order doesn’t matter: 20% then 10% gives the same final price as 10% then 20%.
- Example: ₹1,000 with 20% + 10% off = ₹1,000 × 0.80 × 0.90 = ₹720 (not ₹700).
Tax on Discounted Price
When tax is applicable, it is calculated on the discounted (sale) price, not the original price. This means:
- Tax Amount = Sale Price × (Tax Rate ÷ 100)
- Final Price = Sale Price + Tax Amount
- You still save on the tax amount compared to paying tax on the full price.
Tips for Smart Shopping
- Compare Effective Discounts: “30% off” is better than “20% + 10% off” (which is only 28% effective).
- Check the Base Price: Some retailers inflate the MRP before applying a discount. Compare with other stores.
- Flat vs Percentage: For expensive items, percentage discounts save more. For cheap items, flat discounts may be better.
- Cashback ≠ Discount: Cashback is usually returned as store credit, not actual savings. Factor this in.
- Bundle Deals: “Buy 2 Get 1 Free” is effectively 33.3% off. Compare this with percentage offers.