Discount and Sales Tax Tools
Retail math can get complicated at the checkout counter. Our discount and sales tax tools help you quickly calculate percentage-based discounts, determine the final price of a product after tax, and understand the mechanics of sales tax pass-throughs.
Calculators
Our free online discount and sales tax tools to help you calculate and plan.
Related Guides
Learn more with our comprehensive guides and articles.
How Sales Tax Works for Businesses
An educational guide on how businesses collect, calculate, and remit sales tax. Understand the concept of economic nexus and tax exemptions.
How to Calculate a Discount: Step-by-Step Guide
Calculating a discount requires converting the discount percentage into a decimal, multiplying it by the original price to find your savings, and subtracting that from the total.
Glossary Terms
Key definitions you should know.
Worked Examples
Step-by-step examples showing exactly how the math works.
Calculating a 30% Off Sale
To find the final price quickly in your head, you can multiply the original price by the percentage you are actually paying (70%, or 0.7) instead of calculating the discount first.
View in Calculator →Adding 8.5% Sales Tax to a Laptop
The retailer collects $1,302 from the customer, but only keeps $1,200. The remaining $102 is held by the business and remitted to the local government during tax season.
View in Calculator →Frequently Asked Questions
How is sales tax calculated?
Sales tax is calculated by multiplying the purchase price by the sales tax rate. For example, a $100 item with a 5% sales tax would cost $105.