Sales Tax Calculator
Our Sales Tax Calculator helps you quickly calculate sales tax on a purchase and find the total amount after tax. You can also remove sales tax from a tax-inclusive price to find the original price before tax. Enter the amount and tax rate to get an accurate breakdown of the original amount, sales tax, and total amount.
Sales Tax Calculator
Result
Original Amount: 0.00
Sales Tax: 0.00
Total Amount: 0.00
Sales Tax Formula
Sales tax is calculated by multiplying the original price by the sales tax rate. The tax amount is then added to the original price to determine the total amount including sales tax.
Sales Tax = Original Price × (Tax Rate ÷ 100)
Total Price = Original Price + Sales Tax
When Removing Sales Tax
Original Price = Total Price ÷ (1 + Tax Rate ÷ 100)
Sales Tax = Total Price − Original Price
Where
✅ Original Price – The price before sales tax is applied.
✅ Tax Rate — The sales tax percentage charged on the purchase.
✅ Sales Tax — The amount of tax added to the original price.
✅ Total Price — The final price after sales tax is added.
✅ Tax-Inclusive Price — A price that already includes sales tax.
How to Calculate Sales Tax
Follow these simple steps to calculate sales tax and find the final price of your purchase.
①
Enter the Price
Enter the original price of the product or service before sales tax.
②
Enter the Tax Rate
Enter the applicable sales tax rate as a percentage, such as 5%, 10%, 18%, or 20%.
③
Calculate the Sales Tax
Click the Calculate button to determine the sales tax amount and the final price.
④
View Your Result
The calculator shows the original amount, sales tax, and total amount clearly in one place.
How to Remove Sales Tax From a Price
If a price already includes sales tax, you can use our calculator to find the original price before tax. This is useful when you know the final price but need to determine how much of it represents sales tax.
Enter the Tax-Inclusive Price
Enter the total amount you paid, including sales tax.
Enter the Tax Rate
Enter the sales tax rate included in the price.
View the Pre-Tax Price
The calculator separates the original price from the sales tax included in the total.
Where Is Sales Tax Used?
Sales tax is commonly applied to purchases of goods and services. Calculating the tax before completing a purchase can help you understand the final amount you will pay.
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Shopping
Calculate the final cost of products after sales tax is added.
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Online Purchases
Estimate the total cost of online orders when sales tax applies.
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Invoices
Determine the tax amount and total amount when preparing invoices.
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Retail Businesses
Calculate sales tax on products sold to customers.
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Business Accounting
Separate the tax portion from tax-inclusive amounts for financial records.
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Personal Budgeting
Estimate the actual cost of purchases including sales tax.
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Frequently Asked Questions
Find answers to the most common questions about compound interest, investment growth, and financial planning.
Sales tax is a consumption tax charged on certain goods and services when they are purchased. The applicable rate and taxable items depend on the country, state, province, or local jurisdiction.
Multiply the original price by the sales tax rate expressed as a decimal. Then add the resulting tax amount to the original price to find the total price.
Multiply $100 by the applicable sales tax rate. For example, with a 10% sales tax rate, the tax would be $10 and the total would be $110.
Divide the tax-inclusive price by 1 plus the tax rate expressed as a decimal. This gives you the original price before tax.
Whether sales tax is included in a displayed price depends on the country, jurisdiction, business, and pricing rules. In some places prices are displayed before tax, while in others consumer prices may include applicable taxes.
Sales tax is generally collected at the point of sale, while VAT is generally collected at multiple stages of the supply chain. The exact rules vary by jurisdiction.
Yes. Enter the applicable sales tax rate for your purchase. The calculator can be used with different tax rates rather than being limited to one fixed percentage.
Yes. The uPercentage Sales Tax Calculator is free to use and provides quick sales tax calculations without requiring manual calculations.