# Discount Calculator

- **URL:** https://codeasystem.com/calculators/finance/discount-calculator/
- **Category:** finance
- **Description:** Find the sale price after a percentage discount and exactly how much you save.
- **Primary output:** Sale price: $97.49

## Inputs
- Original price (name: `price`, type: number, prefix: $, example: 129.99)
- Discount (name: `discount`, type: number, example: 25)

## Outputs
- Sale price: $97.49
- You save: $32.50
- Original price: $129.99

## Formula / methodology
```
Sale price = Price × (1 − discount% / 100)
```

Multiply the original price by the surviving fraction after the discount. Stacked discounts (e.g. “extra 20% off already 30% off”) apply sequentially, not additively; chain this calculator twice for those cases.

## Assumptions & limitations
- Single discount applied to the listed price.
- Tax is calculated on the discounted price in most jurisdictions.
- “50% + extra 20% off” equals 60% total off, not 70%.

## Example
A $129.99 item at 25% off sells for $97.49, putting $32.50 back in your pocket.

Result for these inputs:

```
Sale price: $97.49
```

## About this calculator
### Reading discount claims critically

Retailers sometimes inflate a “was” price before applying the slash. Tracking genuine historical prices beats trusting strikethroughs. A discount on something you did not plan to buy is still a 100% markup on zero.

### Stacking rules

Successive percentages multiply: 30% then 20% off leaves 0.7 × 0.8 = 56% of the original price. Stores love quoting “50% total savings!” when the true stack is far less.

## FAQs
### How do I combine two discounts?

Apply the larger discount first, then enter the resulting sale price with the second discount. They never simply add.

### Is tax applied before or after discount?

Almost everywhere, sales tax applies to the price actually charged; after discounts, before coupons that behave like cash.

### What is the discount in dollars?

The “You save” row shows the absolute amount removed from the original price.

## Related calculators
- [Sales Tax Calculator](https://codeasystem.com/calculators/finance/sales-tax-calculator/)
- [Tip Calculator](https://codeasystem.com/calculators/finance/tip-calculator/)
- [Percentage Calculator](https://codeasystem.com/calculators/math/percentage-calculator/)

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Last updated: 2026-08-23 · Version: 1.0.0 · [HTML version](https://codeasystem.com/calculators/finance/discount-calculator/)