# Discount Calculator

> Find the sale price, savings, optional tax, and effective discount.

Page: https://askcalculators.com/calculator/discount-calculator/
Definition: https://askcalculators.com/calculator/discount-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/discount-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/discount-calculator/?originalPrice=120&discountType=percent&discountValue=20&taxRate=0

## Inputs
- originalPrice: Original price; type=money; required; default=120; min=0
- discountType: Discount type; type=select; required; default=percent; values=percent|fixed
- discountValue: Discount value; type=number; required; default=20; min=0
- taxRate: Tax after discount; type=percent; optional; default=0; min=0; max=100

## Outputs
- finalPrice: Final price; format=currency; primary
- savings: You save; format=currency
- discountedPrice: Price before tax; format=currency
- taxAmount: Tax; format=currency
- effectiveDiscount: Effective discount; format=percent

## Formula
Final price = original price − discount + tax

A fixed discount is capped at the original price. Tax is applied after the discount.

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.