What this VAT calculator does
- Adds VAT to a net (pre-tax) price to give the gross total your customer pays.
- Removes VAT from a gross (tax-inclusive) price to reveal the underlying net amount.
- Works with any VAT rate, not just the standard 20%.
How to calculate VAT
To add VAT, multiply the net amount by one plus the rate: gross = net × (1 + rate). So 100 at 20% becomes 100 × 1.20 = 120.
To remove VAT, divide the gross amount by one plus the rate: net = gross ÷ (1 + rate). So 120 at 20% becomes 120 ÷ 1.20 = 100, leaving 20 of VAT.
Frequently asked questions
How do I add VAT to a price?
Multiply the net price by one plus the rate and the gross total appears. Pick “Add VAT”.
How do I remove VAT from a gross price?
Divide the gross price by one plus the rate. Pick “Remove VAT”.
Is this calculator free?
Yes — completely free, no signup, and it runs entirely in your browser.