Coupon Savings Calculator — Formula

## How Coupon Savings Are Calculated

Coupons come in two forms: a percentage off the total, or a fixed dollar amount. This calculator handles both and shows the effective discount rate.

### Percentage Coupon

**Savings = Cart Total x Coupon % / 100**

### Fixed Dollar Coupon

**Savings = Coupon Dollar Amount**

Exemplo Resolvido

You have an $85 cart and a 15% off coupon.

  1. Coupon type: Percentage off
  2. Savings = $85.00 x 15 / 100 = $12.75
  3. Final total = $85.00 - $12.75 = $72.25
  4. Effective discount = 15.0%