Sales Tax Calculator

Sales Tax Calculator — Work Out Tax and Total Price Instantly

Sales tax (and its international cousins like VAT and GST) is added on top of an item's listed price, and the rate varies widely by country, state, and even city. Working out "what's 7.25% tax on $89.99" in your head at the register — or budgeting for a purchase before you check out online — is exactly the kind of small, repetitive maths a calculator should handle for you.

Our Sales Tax Calculator takes a net amount and a tax rate and instantly shows you two numbers: the tax amount added and the final total you'll actually pay. It works with any tax rate, so it's just as useful for a 5% GST as it is for a 20% VAT or a local US sales tax that runs to two decimal places.

Common uses include: budgeting for a purchase before you reach checkout, verifying the tax line on a receipt or invoice, quoting a tax-inclusive price to a customer, comparing the real cost of items across regions with different rates, and adding tax to freelance or contractor invoices. The tool is currency-neutral — enter the number and ignore the symbol, whether you deal in dollars, pounds, euros, or rupees.

The formula is simple: **Tax = Amount × (Rate ÷ 100)** and **Total = Amount + Tax**. To work backwards from a tax-inclusive total to the pre-tax price, divide the total by (1 + Rate ÷ 100).

How to Use the Sales Tax Calculator

1. Enter the net amount before tax (e.g., 100).
2. Enter the tax rate as a percentage (e.g., 7.25).
3. Instantly see the tax amount and the total price including tax.
4. Adjust either value to recalculate immediately.