VAT Calculator
Add or remove VAT (or sales tax) to find the net, tax, and gross amounts.
Add VAT to a net (pre-tax) price, or remove VAT from a gross (tax-inclusive) price, at any rate. The net, the VAT amount, and the gross total are shown together.
The same math works for any percentage-based sales tax — just enter your local rate.
📖 Read the guide: How to Calculate VAT: Adding and Removing Tax
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Formula
Add VAT
net × (1 + rate ÷ 100) = gross
Example: £100 + 20% VAT → 100 × 1.20 = £120 gross, £20 VAT.
Remove VAT
gross ÷ (1 + rate ÷ 100) = net
Example: £120 ÷ 1.20 = £100 net, £20 VAT.
How to use the vat calculator
- 1Choose whether to add VAT to a net price or remove VAT from a gross price.
- 2Enter the amount and the VAT (or sales tax) rate.
- 3Read the net, VAT, and gross figures; copy any of them.
Examples
| Example | Input | Result |
|---|---|---|
| Add 20% | £100 net, 20% | £20 VAT · £120 gross |
| Remove 20% | £120 gross, 20% | £100 net · £20 VAT |
| Sales tax | $50 net, 8.5% | $4.25 tax · $54.25 total |
Adding vs. removing VAT
To add VAT, multiply the net price by one plus the rate as a decimal: at 20%, multiply by 1.20. To remove VAT and find the original net price from a tax-inclusive total, divide by the same figure — divide by 1.20, don't subtract 20%. Subtracting 20% from a gross price gives the wrong answer because the VAT was charged on the smaller net amount.
For example, £120 including 20% VAT has a net price of £100 (120 ÷ 1.20), not £96 (120 − 20%).
VAT and sales tax
VAT (value added tax) is used across the UK, EU, and many other countries; US sales tax works the same way mathematically. Enter whatever rate applies to you. Rates and rules differ by country and product, so treat the result as an estimate.
This tool provides estimates only. VAT and sales tax rates and rules vary by country and product — consult a tax professional for official calculations.
Frequently asked questions
How do I add VAT to a price?
Multiply the net price by (1 + rate ÷ 100). At 20%, multiply by 1.20: £100 becomes £120.
How do I remove VAT from a gross price?
Divide the gross price by (1 + rate ÷ 100). At 20%, divide by 1.20: £120 becomes £100 net. Don't simply subtract the percentage.
Can I use this for US sales tax?
Yes. The math is identical — just enter your local sales tax rate.
Is my data private?
Yes. All calculations run in your browser.
Embed this calculator
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<iframe src="https://numvella.com/embed/vat-calculator" width="100%" height="460" style="border:1px solid #e2e8f0;border-radius:12px" title="VAT Calculator — Numvella" loading="lazy"></iframe>Related calculators
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