Sales Tax Calculator

Sales Tax Calculator — Calculate Sales Tax in Any US State or Country

The Sales Tax Calculator is a free online tool that helps you instantly compute the sales tax owed on any product or service in any US state, Canadian province, or country with a flat sales tax. Whether you are a shopper verifying a receipt, an online seller calculating tax for invoices, an accountant preparing reports, or a small business owner pricing products, this calculator removes the manual math and delivers accurate totals in one click.

How Sales Tax Works

Sales tax is a consumption tax added to the price of goods and services at the point of sale. In the United States, sales tax rates vary by state, city, and county — ranging from 0% in Oregon, Montana, New Hampshire, Alaska, and Delaware to over 10% in some California and Tennessee cities. Other countries use similar consumption taxes such as GST or VAT. Knowing the exact rate is essential because mis-charging customers can lead to refunds, penalties, or lost trust.

How to Use the Calculator

Enter the pre-tax price and the applicable sales tax rate (as a percentage). The tool instantly returns the tax amount, the post-tax total, and a breakdown showing the math. You can also reverse the calculation by entering a tax-inclusive price to extract the original net price. This is especially useful for online sellers who quote tax-inclusive prices but need to separate them on invoices.

Why Use Our Sales Tax Calculator?

This calculator is free, instant, mobile-friendly, and requires no signup. It works for any rate, any currency, and any region. Save it to your bookmarks for shopping trips, freelance invoicing, expense reports, or routine accounting. Accurate sales tax means accurate pricing — and accurate pricing protects your margins.

Tamer Baghdadi

CEO / Co-Founder