No upload, 100% local, no account

VAT & Sales Tax Calculator

Add tax to a net price or extract it from a gross total, right in your browser.

How VAT & Tax Calculator works

The VAT and sales tax calculator works in both directions: enter a net price and a tax rate to get the gross total, or paste a tax-inclusive gross amount to recover the pre-tax net and the exact tax charged. Common rates (5, 10, 15, 20, 21, 25 percent) are one-tap presets, and any custom rate is accepted.

The same arithmetic covers VAT, GST, HST and US sales tax, only the rate changes, and the remove-tax mode back-calculates the net with net = gross / (1 + rate/100) so you can see exactly how much tax a quoted price already includes.

Frequently asked questions

Does this calculator send my numbers to a server?

No. All arithmetic runs locally in your browser. Nothing is uploaded; you can disconnect after the page loads and it keeps working.

What is the difference between Add tax and Remove tax?

Add tax takes a net price and adds tax on top to give the gross. Remove tax takes a gross price and back-calculates the net and the embedded tax: net = gross / (1 + rate/100).

Which tax rates are supported?

Any non-negative rate. Presets cover common VAT and sales-tax rates; the custom field accepts values such as 5.5, 7.7 or 8.25 percent.

Can I use it for GST, HST or US sales tax?

Yes. The math is identical whatever the tax is called, enter your local rate and pick Add or Remove.