Sales Tax Calculator
Add or remove sales tax from any price. Enter the amount and tax rate to find the tax owed and the final total, or work backward to the pre-tax price.
Add or remove sales tax from any price. Enter the amount and tax rate to find the tax owed and the final total, or work backward to the pre-tax price.
To add sales tax, multiply the pre-tax price by the tax rate expressed as a decimal, then add that amount to the original price. For example, a $50 item at an 8% tax rate incurs $4 in tax, giving a total of $54. A quicker method is to multiply the price by one plus the rate, so 50 × 1.08 = 54. This calculator does the arithmetic instantly and shows both the tax amount and the final total, which is helpful when budgeting for a purchase or preparing a quote that must include tax.
To find the pre-tax price from a tax-inclusive total, divide the total by one plus the tax rate as a decimal. For an $54 total at 8% tax, the calculation is 54 ÷ 1.08 = $50, meaning $4 was tax. This reverse calculation is essential for accounting, expense claims, and invoicing where you need to separate the net price from the tax component. The calculator handles this back-calculation automatically so you do not have to rearrange the formula yourself.
No. Sales tax rates differ by country, and within some countries they vary by state, province, or city. In the United States, for instance, there is no national sales tax and rates are set locally, sometimes combining state and municipal portions. Other regions use value-added tax (VAT) or goods and services tax (GST) applied at each stage of the supply chain. Because rates and rules differ so much, always confirm the correct rate for the location of the sale before relying on a calculated total.
Sales tax is typically charged once, at the final point of sale to the consumer, and is common in the United States. Value-added tax is collected incrementally at each stage of production and distribution, with businesses reclaiming the tax they paid on inputs, and is widespread in Europe, Asia, and many other regions. For a shopper, both appear as an addition to the displayed price, but the underlying mechanics and reporting obligations for businesses are quite different.
In most jurisdictions, sales tax is applied to the discounted price, that is, after the discount has been subtracted, because tax is charged on the actual amount the customer pays. However, rules can vary for certain promotions, coupons, or manufacturer rebates. When in doubt, apply the discount first, then calculate tax on the reduced figure, and confirm against local regulations for any special cases.