Discount Calculator
What does the sale really cost you? Calculate the sale price and keep an eye on your margin after the discount.
Sale price
€63.99
Customer savings
€16.00
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Claim 50% off nowHow to use the discount calculator
- Enter your product’s regular selling price under Original price (€). Both comma and period work as the decimal separator.
- Enter the planned reduction under Discount (%). The calculator automatically clamps values below 0 or above 100 to the valid range.
- Optionally fill in the Cost price (€, optional) field if you also want to see your margin. If the field stays empty, the calculator only shows price and savings.
What the displayed results mean
The Sale price is the amount your customers pay after the discount is deducted. Customer savings shows the difference to the original price – exactly the value you can also communicate in banners or product descriptions.
If you have entered a cost price, the Your margin block appears with two bars: Before discount and After discount. A green bar stands for a positive margin, a red one for a negative. If the discount pushes you below your costs, the calculator additionally shows a warning: every sale at the sale price then makes a loss.
How to interpret the results
Compare the two margin bars directly: the more the second bar drops compared to the first, the more sensitively your profit reacts to the reduction. Feel free to test several discount levels one after another – that way you find the point where the sale price looks attractive without endangering your calculation. You can determine your base margin without discount using the margin calculator.
Practical tips for your pricing
Watch out for price thresholds: a sale price just below a round boundary (e.g. €49.90 instead of €51) feels significantly cheaper to customers. So adjust the discount level so that the result falls below such a threshold instead of only looking at round percentages.
Also document for every promotion which discount level you used and how sales responded. Only then will you recognize across multiple campaigns which level actually works best for your assortment.
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Frequently asked questions
- How do I calculate the discount percentage from two prices?
- Subtract the sale price from the original price and divide the difference by the original price: discount percentage = (1 − sale price / original price) × 100. If a product costs €60 instead of €80, that is a 25% discount. The calculator above does this reverse calculation automatically.
- How much discount can I afford as an online store?
- The upper limit is your margin: a discount higher than your margin percentage results in a loss on every sale. With a 35% margin, around 20 to 25% discount is still acceptable, but 40% is not. Enter your cost price above to see your margin after the discount.
- What is the difference between discount and margin?
- The discount applies to the selling price and reduces it by a percentage. The margin describes how much of the selling price remains as profit after deducting costs. That is why a discount hits the margin disproportionately hard: a 20% discount can cost you half your profit if your base margin is low.
- When is a discount promotion worth it in e-commerce?
- A discount promotion is worth it when it drives additional volume, new customers, or inventory clearance without wiping out your margin. It makes the most sense for products with a high base margin or as a time-limited event like Black Friday. Check beforehand with the calculator how much profit per unit remains after the discount.
- How do I correctly account for discount and sales tax?
- The discount is always applied to the price first, and sales tax is calculated on the reduced amount afterwards. If you deduct the discount from a gross price, keep in mind that the included tax decreases proportionally as well. For the margin view, it is best to calculate with net prices so the result is not distorted.