Sales Tax Calculator
Calculate sales tax and total price from a tax rate.
What is Sales Tax Calculator?
This free online tool helps you work with sales tax quickly and without signup. It is designed for simple everyday use on desktop and mobile browsers.
How to use this calculator
Enter the values you already know, choose any relevant rate or mode, then calculate. The result is shown immediately so you can test different scenarios without creating an account.
Practical tip
For business decisions, keep the original inputs with your result. Rates, taxes, fees and costs can change, so use the calculator as a planning aid and confirm any official amount with the relevant provider or authority.
Why use this tool?
- Free to use with no account required.
- Clear inputs and immediate results.
- Mobile-friendly interface.
- Related tools are linked below for the next step in your workflow.
How sales tax is calculated
Sales tax is commonly calculated as taxable price × tax rate. The total paid is the taxable price plus the calculated tax. For a price of 80 and a 7.5% rate, the tax is 6 and the total is 86.
What the calculator does not determine
The arithmetic is simple, but whether an item is taxable and which rate applies can depend on state, province, city, product type, customer location and nexus rules. Use the correct rate for the transaction before relying on the total.
Rounding and multiple items
Real checkout systems may round tax per line item or after the order subtotal, which can create small differences. If you are reconciling an invoice, use the same rounding method used by the seller or accounting system.
Frequently Asked Questions
Is Sales Tax Calculator free to use?
Yes. The tool is available without signup or a paid account.
Does this tool work on mobile devices?
Yes. The interface is responsive and is designed to work in modern mobile and desktop browsers.
Can I use the result for official or financial decisions?
Use the result as a practical estimate. Confirm legally, financially or operationally important figures with the relevant official source, provider or professional.
What is the formula for sales tax?
Sales tax equals taxable price multiplied by the tax rate. Total price equals taxable price plus sales tax.
Does this calculator know my local tax rate?
No. Enter the rate that applies to your transaction because local rates and taxable-item rules vary.