VAT Calculator
Add or remove a VAT, GST or sales-tax percentage to see the gross, net and tax amounts instantly — 100% in your browser, no upload.
Add tax (net → gross)
Gross amount: 120Tax: 20
Remove tax (gross → net)
Net amount: 100Tax: 20
Find rate (net + gross → rate %)
Tax rate: 20%
🔒 Calculated in your browser — nothing is uploaded. Plain numbers, no currency.
Add tax to a net amount
Enter a net (tax-exclusive) amount and a tax rate, and the tool instantly shows the gross total and the tax portion. It uses plain numbers with no currency, so the same calculator works for VAT, GST or any sales tax in any country — just read the result in whatever units you entered. Everything updates live as you type.
Remove tax from a gross amount
Already have a tax-inclusive total? The second section works backwards using net = gross ÷ (1 + rate ÷ 100) to reveal the original net amount and how much of the total was tax. Displayed figures are rounded to two decimals for readability while the underlying math stays exact.
Frequently asked questions
How do you add VAT to a net price?
Tax = net × rate ÷ 100, and gross = net + tax. For example, adding 20% to 100 gives 20 in tax and 120 gross.
How do you remove VAT from a gross total?
Net = gross ÷ (1 + rate ÷ 100). With a 20% rate, a gross of 120 divides by 1.2 to give a net of 100, so the tax was 20. Dividing by the total does not give the right answer, which is why this reverse formula is used.
Is anything uploaded to a server?
No. Every calculation runs entirely in your browser with JavaScript. Nothing you type is sent anywhere or stored.