VAT / Sales Tax

Calculate VAT or sales tax instantly. Add tax to a net price or extract tax from a gross price. Works with any tax rate worldwide.

How it works

VAT added = net × rate. Gross = net × (1 + rate). Net from gross = gross ÷ (1 + rate). VAT within gross = gross × rate ÷ (1 + rate).

Worked example

A £200 net invoice at 20% VAT becomes £240 gross. Working backwards from £240: net is £200 and the VAT element is £40 (240 × 20 ÷ 120).

Frequently asked questions

How do I remove VAT from a gross price?

Divide by 1 plus the rate — for 20% VAT, divide by 1.2. Subtracting 20% from the gross price is the most common error and understates the net figure.

What are the common VAT rates?

The UK uses 20% standard, 5% reduced and 0% zero-rated. EU standard rates range from 17% to 27%, so always confirm the country and category before invoicing.

When must I register for VAT?

In the UK, once taxable turnover passes the registration threshold in any rolling 12 months. Voluntary registration can pay off if most of your customers are VAT-registered businesses.