Sales Tax Calculator
Calculate sales tax instantly. Enter your price and tax rate to get accurate tax amounts and totals.
About Sales Tax Calculator
Our Sales Tax Calculator is a fast and accurate tool that helps you determine the exact sales tax on any purchase. Simply enter the pre-tax price and the applicable tax rate, and our calculator instantly computes the tax amount and the final total price.
Whether you are a shopper checking the final cost, a business owner preparing invoices, or an accountant reconciling transactions, this tool provides clear results including the tax breakdown. It also supports reverse calculation (working backward from the total to find the pre-tax price) and preset tax rates for common regions around the world.
Calculate Sales Tax
How to Use
Enter the Net Price
Type the pre-tax price of the item or service in the "Net Price" field. You can enter any positive amount, including cents (e.g., 99.99).
Set the Tax Rate
Enter the applicable sales tax rate as a percentage. You can type the rate manually or use one of the preset buttons for common tax rates.
Choose Calculation Mode
Select "Add Tax to Price" to calculate tax on top of a net price, or "Extract Tax from Total" to work backward from a total price that already includes tax.
View Results and Add Items
The results show the net price, tax amount, and total. You can click "Add This Item" to build a multi-item summary, useful for invoices or shopping lists.
Frequently Asked Questions
What is sales tax?
Sales tax is a consumption tax imposed by governments on the sale of goods and services. It is typically calculated as a percentage of the purchase price and is collected by the seller at the point of sale. Rates vary by jurisdiction and can apply at federal, state, county, and city levels.
How do I calculate sales tax?
To calculate sales tax, multiply the net price by the tax rate (expressed as a decimal). For example, a $100 item with a 7% tax rate: Tax = $100 x 0.07 = $7.00. The total price would be $100 + $7 = $107.00. Our calculator does this instantly for you.
What is the difference between "Add Tax" and "Extract Tax"?
"Add Tax to Price" calculates the tax on top of a net (pre-tax) price to give you the total. "Extract Tax from Total" works in reverse -- it takes a total price that already includes tax and determines what the original net price was and how much of it is tax.
Can I use this calculator for any country?
Yes! This calculator works with any tax rate regardless of the country. The preset buttons offer common rates, but you can enter any rate manually. The calculations are universal and apply to sales tax, VAT, GST, or any similar consumption tax.
What is the multi-item feature for?
The multi-item feature lets you accumulate multiple line items with their individual taxes. This is useful for creating a quick invoice summary, estimating the total tax on a shopping list, or reconciling multiple transactions at once.
Is my data stored or shared?
No. All calculations are performed locally in your browser. We do not store, transmit, or share any of the amounts or rates you enter. Your financial information stays on your device only.