Dec 28, 2025Educational Guide

A Guide to Calculating Discounts and Markups

Whether you're a consumer trying to figure out the final price of a sale item or a business owner setting retail prices, understanding discounts and markups is essential.

Calculating Discounts

A discount is a reduction in the original price of an item. To calculate the final price after a discount:

  1. Convert the discount percentage to a decimal (e.g., 20% = 0.20).
  2. Multiply the original price by the decimal to find the discount amount.
  3. Subtract the discount amount from the original price.

Shortcut: Alternatively, you can subtract the discount percentage from 100% to find the "percentage you pay." For a 20% discount, you pay 80% (100% - 20%). Multiply the original price by 0.80 to get the final price directly.

Calculating Markups

A markup is the amount added to the cost price of goods to cover overhead and profit. It is usually expressed as a percentage of the cost price.

  1. Convert the markup percentage to a decimal (e.g., 50% = 0.50).
  2. Multiply the cost price by the decimal to find the markup amount.
  3. Add the markup amount to the cost price to find the selling price.

Shortcut: Add 1 to the decimal markup percentage and multiply by the cost. For a 50% markup, multiply the cost by 1.50.

Markup vs. Margin

It's crucial for business owners to understand the difference between markup and profit margin. Markup is a percentage of the cost, while margin is a percentage of the selling price. A 50% markup on a $10 item results in a $15 selling price. The profit is $5. The profit margin is $5 / $15 = 33.3%.

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