Discount Comparison
| Discount Rate | Final Price | Savings |
|---|
| 10% | 9,000 | 1,000 |
| 20% | 8,000 | 2,000 |
| 30% | 7,000 | 3,000 |
| 40% | 6,000 | 4,000 |
| 50% | 5,000 | 5,000 |
What is a Discount Calculator?
A discount calculator takes an original price and a discount percentage and instantly shows the sale price and how much you save. It is perfect for sales, coupons, and clearance events when you want to know what you will actually pay before reaching the register. Keep an eye on tax: in places where prices are shown before tax, sales tax is added on top of the discounted price, so the final amount is higher than the sticker. Stacked discounts are another common trap — '30% off plus an extra 10% off' is not 40% off, because the percentages multiply rather than add, leaving you with about 37% off. This tool prevents such mistakes and helps you compare competing offers calmly and quickly.
How to Use
1. Enter the original price (the list price).
2. Enter the discount percentage (%).
3. Calculate to see the discounted price and the amount you save.
Try different discount rates to compare sales or stores side by side.
Formula & Definition
The math is simple:
Savings = original price × discount (%) ÷ 100
Sale price = original price − savings
For example, a $80 item at 25% off saves $20, leaving $60 to pay. For stacked discounts, multiply rather than add the rates: 30% off then 10% off is $80 × 0.7 × 0.9 = $50.40, equivalent to about 37% off. If prices are shown before tax, multiply the result by your sales tax (for example 8%) to get the final amount.
Interpreting Results
The 'sale price' is what you actually pay (before tax where prices are pre-tax), and 'savings' is what you keep. A large savings figure can be misleading if the original price was temporarily inflated, so compare against the usual market price. As a rule of thumb, half price is 50% off and a third off is about 33% off, but 'second item half price' works out to only 25% off overall. Above all, remember that stacked discounts do not add up. Where prices exclude tax, sales tax is applied to the discounted amount, so the final bill exceeds the displayed number. Loyalty points act like a discount but are usually spent on a future purchase, which differs from an immediate cash markdown.
Frequently Asked Questions
Is '30% off plus 10% off' the same as 40% off? ▾
No. Discounts multiply, so 0.7 × 0.9 = 0.63, which is about 37% off. Percentage discounts cannot simply be added together.
How do I handle prices shown before tax? ▾
Apply the discount first, then multiply by your sales tax (for example 8%) to get the final price. This tool shows the pre-tax discounted amount, so the final bill is higher by the tax.
Can I work out the discount rate from the sale price? ▾
Yes. Discount rate = (1 − sale price ÷ original price) × 100. For example, $100 reduced to $75 is 25% off.
Are loyalty points the same as a discount? ▾
They are close to a real markdown, but the points awarded are meant to be spent on a later purchase, unlike a cash discount that lowers what you pay on the spot.