Discount Calculator
Master sales savvy with intelligent discount calculations covering percentage off, fixed amount reductions, and buy-one-get-one offers. Perfect for shoppers, retailers, and bargain hunters tracking savings amounts and optimal purchase decisions with detailed sale price analysis.
Complete Guide: Discount Calculator
Everything you need to know about using this tool effectively
This discount calculator takes an original price and one or more discount percentages and shows the final sale price, the dollar amount saved, and the effective discount rate. The core formula subtracts the discount percentage from 100, multiplies by the original price, and outputs the reduced price. You can stack multiple discounts to see the true combined savings.
Discount calculation uses the relationship sale price = original price * (1 - discount / 100). When multiple discounts are applied, each successive percentage reduces the already-discounted price rather than the original, which is why stacked discounts never sum arithmetically. This tool computes each step so you see exactly how a 20 percent off plus 10 percent off sale actually yields 28 percent off the original, not 30 percent. The calculator also works in reverse, finding the discount percentage needed to reach a target price from a known original.
Shopping Price Checks
Shoppers verify the actual sale price and savings during in-store or online sales before checkout.
Retail Promotion Planning
Store managers calculate final prices after setting discount percentages for seasonal or clearance sales.
Budget Forecasting
Consumers plan purchases by estimating post-discount costs across multiple items and sale events.
Negotiation Reference
Buyers and sellers use the calculator to propose and evaluate percentage-based price reductions.
Coupon Stacking Analysis
Shoppers combine store coupons and manufacturer rebates to find the true total discount.
Enter the Original Price
Type the retail or list price before any discounts are applied.
Enter the Discount Percentage
Type the discount rate as a number. For 15 percent off, enter 15.
View Results
The calculator displays the sale price, dollar savings, and effective discount percentage instantly.
Stack Additional Discounts
Add a second or third discount field to see the compounding effect of sequential reductions.
Copy the Breakdown
Copy the price summary to paste into a budget spreadsheet or share with someone.
Stacked discounts apply to the reduced price, not the original. A 20 percent coupon followed by a 10 percent store discount equals 28 percent off, not 30 percent.
Always check whether tax is calculated before or after the discount, since this varies by jurisdiction and retailer.
Compare the effective discount rate shown by the calculator to advertised savings claims to verify you are getting the stated deal.
Use reverse mode to figure out what discount percentage you need to hit a specific budget target when the original price is fixed.
Factor in shipping costs when evaluating online deals. A larger discount may be offset by high delivery fees.
How do I calculate a discount?
Multiply the original price by the discount percentage divided by 100 to get the savings amount. Subtract that from the original price to get the sale price. For example, 100 dollars at 20 percent off saves 20 dollars and costs 80 dollars.
What happens when I stack two discounts?
Each discount applies to the price remaining after the previous discount. A 20 percent discount followed by a 10 percent discount on an 100 dollar item gives 100 * 0.80 * 0.90 = 72 dollars, which is a combined 28 percent off.
Can I find the original price from a sale price?
Yes. Divide the sale price by one minus the discount rate in decimal form. For example, an item costing 75 dollars after 25 percent off had an original price of 75 / 0.75 = 100 dollars.
What is the difference between a percentage discount and a fixed dollar discount?
A percentage discount scales with the original price (20 percent off a 200 dollar item saves 40 dollars). A fixed discount is a flat amount regardless of price (10 dollars off saves 10 dollars whether the item is 50 or 500 dollars). This calculator handles percentage discounts.
Are discounts applied before or after tax?
In most US states the discount is applied first and tax is calculated on the reduced price. Some regions differ, so check local rules. This calculator shows pre-tax pricing.