What is a Sales Tax Calculator?

A Sales Tax Calculator is a free online website that assists businesses, freelancers, and purchasers when accurately determining sales tax in seconds. You enter a price and a tax rate (local, state, federal, or custom), and the sales tax calculator gives you instantly:

• The amount of sales tax due,
• The total cost including tax
• The net price without tax (useful if you're working backwards from 'gross' amount)

Whether you are a small business owner doing the billing, an online seller determining eCommerce taxes, or even a consumer checking your receipts, the sales tax calculator is great for quickly giving you accurate results. It is also very handy for creating invoices, confirming totals from a checkout, or just figuring out if you are abiding by regional tax regulations.

How Does the Sales Tax Calculator Work?

Using the tool is simple:

1. Enter the price (either before tax or total including tax).
2. Enter the sales tax rate (%) — for example, 5%, 12%, or 18%.
3. Select calculation mode — add tax to net price or remove tax from gross price.
4. Hit Calculate to get:
   • Sales tax amount
   • Net price (exclusive of tax)
   • Total price (inclusive of tax)

Formula:

• Forward calculation: Sales Tax = Price × (Tax Rate ÷ 100)
• Reverse calculation: Net Price = Gross ÷ (1 + Tax Rate ÷ 100)

Why Use This Sales Tax Calculator?

• You can easily remove and ramp manual errors from your invoices and bills.
• Less time consuming than doing taxes in draft, or lots of complex tax math.
• You can compare costs of tax inclusive vs tax exclusive in a matter of milliseconds.
• Good to use for personal budget, and useful for business compliance.
• Good for freelancers, online sellers, retail sellers to stay compliant with their local/regional tax obligations.

Disclaimer

This Sales Tax Calculator is for informational purposes only. Calculations are estimates based on the data you provide and may not reflect actual tax due. Always verify with local tax authorities or accounting professionals for accurate compliance.